/ Vijos /

记录详情

Compile Error

foo.cc:1:3: error: stray '\346' in program
   我们发现自动机的平凡上界就是T。
   ^
foo.cc:1:4: error: stray '\210' in program
   我们发现自动机的平凡上界就是T。
    ^
foo.cc:1:5: error: stray '\221' in program
   我们发现自动机的平凡上界就是T。
     ^
foo.cc:1:6: error: stray '\344' in program
   我们发现自动机的平凡上界就是T。
      ^
foo.cc:1:7: error: stray '\273' in program
   我们发现自动机的平凡上界就是T。
       ^
foo.cc:1:8: error: stray '\254' in program
   我们发现自动机的平凡上界就是T。
        ^
foo.cc:1:9: error: stray '\345' in program
   我们发现自动机的平凡上界就是T。
         ^
foo.cc:1:10: error: stray '\217' in program
   我们发现自动机的平凡上界就是T。
          ^
foo.cc:1:11: error: stray '\221' in program
   我们发现自动机的平凡上界就是T。
           ^
foo.cc:1:12: error: stray '\347' in program
   我们发现自动机的平凡上界就是T。
            ^
foo.cc:1:13: error: stray '\216' in program
   我们发现自动机的平凡上界就是T。
             ^
foo.cc:1:14: error: stray '\260' in program
   我们发现自动机的平凡上界就是T。
              ^
foo.cc:1:15: error: stray '\350' in program
   我们发现自动机的平凡上界就是T。
               ^
foo.cc:1:16: error: stray '\207' in program
   我们发现自动机的平凡上界就是T。
                ^
foo.cc:1:17: error: stray '\252' in program
   我们发现自动机的平凡上界就是T。
                 ^
foo.cc:1:18: error: stray '\345' in program
   我们发现自动机的平凡上界就是T。
                  ^
foo.cc:1:19: error: stray '\212' in program
   我们发现自动机的平凡上界就是T。
                   ^
foo.cc:1:20: error: stray '\250' in program
   我们发现自动机的平凡上界就是T。
                    ^
foo.cc:1:21: error: stray '\346' in program
   我们发现自动机的平凡上界就是T。
                     ^
foo.cc:1:22: error: stray '\234' in program
   我们发现自动机的平凡上界就是T。
                      ^
foo.cc:1:23: error: stray '\272' in program
   我们发现自动机的平凡上界就是T。
                       ^
foo.cc:1:24: error: stray '\347' in program
   我们发现自动机的平凡上界就是T。
                        ^
foo.cc:1:25: error: stray '\232' in program
   我们发现自动机的平凡上界就是T。
                         ^
foo.cc:1:26: error: stray '\204' in program
   我们发现自动机的平凡上界就是T。
                          ^
foo.cc:1:27: error: stray '\345' in program
   我们发现自动机的平凡上界就是T。
                           ^
foo.cc:1:28: error: stray '\271' in program
   我们发现自动机的平凡上界就是T。
                            ^
foo.cc:1:29: error: stray '\263' in program
   我们发现自动机的平凡上界就是T。
                             ^
foo.cc:1:30: error: stray '\345' in program
   我们发现自动机的平凡上界就是T。
                              ^
foo.cc:1:31: error: stray '\207' in program
   我们发现自动机的平凡上界就是T。
                               ^
foo.cc:1:32: error: stray '\241' in program
   我们发现自动机的平凡上界就是T。
                                ^
foo.cc:1:33: error: stray '\344' in program
   我们发现自动机的平凡上界就是T。
                                 ^
foo.cc:1:34: error: stray '\270' in program
   我们发现自动机的平凡上界就是T。
                                  ^
foo.cc:1:35: error: stray '\212' in program
   我们发现自动机的平凡上界就是T。
                                   ^
foo.cc:1:36: error: stray '\347' in program
   我们发现自动机的平凡上界就是T。
                                    ^
foo.cc:1:37: error: stray '\225' in program
   我们发现自动机的平凡上界就是T。
                                     ^
foo.cc:1:38: error: stray '\214' in program
   我们发现自动机的平凡上界就是T。
                                      ^
foo.cc:1:39: error: stray '\345' in program
   我们发现自动机的平凡上界就是T。
                                       ^
foo.cc:1:40: error: stray '\260' in program
   我们发现自动机的平凡上界就是T。
                                        ^
foo.cc:1:41: error: stray '\261' in program
   我们发现自动机的平凡上界就是T。
                                         ^
foo.cc:1:42: error: stray '\346' in program
   我们发现自动机的平凡上界就是T。
                                          ^
foo.cc:1:43: error: stray '\230' in program
   我们发现自动机的平凡上界就是T。
                                           ^
foo.cc:1:44: error: stray '\257' in program
   我们发现自动机的平凡上界就是T。
                                            ^
foo.cc:1:46: error: stray '\343' in program
   我们发现自动机的平凡上界就是T。
                                              ^
foo.cc:1:47: error: stray '\200' in program
   我们发现自动机的平凡上界就是T。
                                               ^
foo.cc:1:48: error: stray '\202' in program
   我们发现自动机的平凡上界就是T。
                                                ^
foo.cc:3:4: error: stray '\345' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
    ^
foo.cc:3:5: error: stray '\233' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
     ^
foo.cc:3:6: error: stray '\240' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
      ^
foo.cc:3:7: error: stray '\344' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
       ^
foo.cc:3:8: error: stray '\270' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
        ^
foo.cc:3:9: error: stray '\272' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
         ^
foo.cc:3:10: error: stray '\346' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
          ^
foo.cc:3:11: error: stray '\210' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
           ^
foo.cc:3:12: error: stray '\221' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
            ^
foo.cc:3:13: error: stray '\344' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
             ^
foo.cc:3:14: error: stray '\273' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
              ^
foo.cc:3:15: error: stray '\254' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
               ^
foo.cc:3:16: error: stray '\344' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                ^
foo.cc:3:17: error: stray '\273' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                 ^
foo.cc:3:18: error: stray '\244' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                  ^
foo.cc:3:19: error: stray '\345' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                   ^
foo.cc:3:20: error: stray '\210' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                    ^
foo.cc:3:21: error: stray '\260' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                     ^
foo.cc:3:22: error: stray '\346' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                      ^
foo.cc:3:23: error: stray '\257' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                       ^
foo.cc:3:24: error: stray '\217' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                        ^
foo.cc:3:25: error: stray '\344' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                         ^
foo.cc:3:26: error: stray '\270' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                          ^
foo.cc:3:27: error: stray '\200' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                           ^
foo.cc:3:28: error: stray '\344' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                            ^
foo.cc:3:29: error: stray '\270' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                             ^
foo.cc:3:30: error: stray '\252' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                              ^
foo.cc:3:31: error: stray '\347' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                               ^
foo.cc:3:32: error: stray '\202' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                ^
foo.cc:3:33: error: stray '\271' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                 ^
foo.cc:3:34: error: stray '\347' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                  ^
foo.cc:3:35: error: stray '\232' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                   ^
foo.cc:3:36: error: stray '\204' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                    ^
foo.cc:3:37: error: stray '\350' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                     ^
foo.cc:3:38: error: stray '\267' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                      ^
foo.cc:3:39: error: stray '\257' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                       ^
foo.cc:3:40: error: stray '\345' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                        ^
foo.cc:3:41: error: stray '\276' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                         ^
foo.cc:3:42: error: stray '\204' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                          ^
foo.cc:3:43: error: stray '\345' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                           ^
foo.cc:3:44: error: stray '\234' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                            ^
foo.cc:3:45: error: stray '\250' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                             ^
foo.cc:3:50: error: stray '\346' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                  ^
foo.cc:3:51: error: stray '\204' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                   ^
foo.cc:3:52: error: stray '\217' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                    ^
foo.cc:3:53: error: stray '\344' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                     ^
foo.cc:3:54: error: stray '\271' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                      ^
foo.cc:3:55: error: stray '\211' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                       ^
foo.cc:3:56: error: stray '\344' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                        ^
foo.cc:3:57: error: stray '\270' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                         ^
foo.cc:3:58: error: stray '\213' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                          ^
foo.cc:3:59: error: stray '\347' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                           ^
foo.cc:3:60: error: stray '\233' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                            ^
foo.cc:3:61: error: stray '\270' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                             ^
foo.cc:3:62: error: stray '\347' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                              ^
foo.cc:3:63: error: stray '\255' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                               ^
foo.cc:3:64: error: stray '\211' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                ^
foo.cc:3:65: error: stray '\357' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                 ^
foo.cc:3:66: error: stray '\274' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                  ^
foo.cc:3:67: error: stray '\214' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                   ^
foo.cc:3:68: error: stray '\345' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                    ^
foo.cc:3:69: error: stray '\210' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                     ^
foo.cc:3:70: error: stray '\231' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                      ^
foo.cc:3:71: error: stray '\350' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                       ^
foo.cc:3:72: error: stray '\277' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                        ^
foo.cc:3:73: error: stray '\231' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                         ^
foo.cc:3:74: error: stray '\346' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                          ^
foo.cc:3:75: error: stray '\240' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                           ^
foo.cc:3:76: error: stray '\267' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                            ^
foo.cc:3:77: error: stray '\344' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                             ^
foo.cc:3:78: error: stray '\270' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                              ^
foo.cc:3:79: error: stray '\200' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                               ^
foo.cc:3:80: error: stray '\345' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                ^
foo.cc:3:81: error: stray '\256' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                 ^
foo.cc:3:82: error: stray '\232' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                  ^
foo.cc:3:83: error: stray '\346' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                   ^
foo.cc:3:84: error: stray '\230' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                    ^
foo.cc:3:85: error: stray '\257' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                     ^
foo.cc:3:86: error: stray '\345' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                      ^
foo.cc:3:87: error: stray '\220' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                       ^
foo.cc:3:88: error: stray '\210' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                        ^
foo.cc:3:89: error: stray '\346' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                         ^
foo.cc:3:90: error: stray '\263' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                          ^
foo.cc:3:91: error: stray '\225' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                           ^
foo.cc:3:92: error: stray '\347' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                            ^
foo.cc:3:93: error: stray '\232' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                             ^
foo.cc:3:94: error: stray '\204' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                              ^
foo.cc:3:95: error: stray '\343' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                               ^
foo.cc:3:96: error: stray '\200' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                                ^
foo.cc:3:97: error: stray '\202' in program
    因为我们令到每一个点的路径在mo T意义下相等,则这样一定是合法的。
                                                                                                 ^
foo.cc:5:3: error: stray '\346' in program
   我们考虑如何合并这些点:
   ^
foo.cc:5:4: error: stray '\210' in program
   我们考虑如何合并这些点:
    ^
foo.cc:5:5: error: stray '\221' in program
   我们考虑如何合并这些点:
     ^
foo.cc:5:6: error: stray '\344' in program
   我们考虑如何合并这些点:
      ^
foo.cc:5:7: error: stray '\273' in program
   我们考虑如何合并这些点:
       ^
foo.cc:5:8: error: stray '\254' in program
   我们考虑如何合并这些点:
        ^
foo.cc:5:9: error: stray '\350' in program
   我们考虑如何合并这些点:
         ^
foo.cc:5:10: error: stray '\200' in program
   我们考虑如何合并这些点:
          ^
foo.cc:5:11: error: stray '\203' in program
   我们考虑如何合并这些点:
           ^
foo.cc:5:12: error: stray '\350' in program
   我们考虑如何合并这些点:
            ^
foo.cc:5:13: error: stray '\231' in program
   我们考虑如何合并这些点:
             ^
foo.cc:5:14: error: stray '\221' in program
   我们考虑如何合并这些点:
              ^
foo.cc:5:15: error: stray '\345' in program
   我们考虑如何合并这些点:
               ^
foo.cc:5:16: error: stray '\246' in program
   我们考虑如何合并这些点:
                ^
foo.cc:5:17: error: stray '\202' in program
   我们考虑如何合并这些点:
                 ^
foo.cc:5:18: error: stray '\344' in program
   我们考虑如何合并这些点:
                  ^
foo.cc:5:19: error: stray '\275' in program
   我们考虑如何合并这些点:
                   ^
foo.cc:5:20: error: stray '\225' in program
   我们考虑如何合并这些点:
                    ^
foo.cc:5:21: error: stray '\345' in program
   我们考虑如何合并这些点:
                     ^
foo.cc:5:22: error: stray '\220' in program
   我们考虑如何合并这些点:
                      ^
foo.cc:5:23: error: stray '\210' in program
   我们考虑如何合并这些点:
                       ^
foo.cc:5:24: error: stray '\345' in program
   我们考虑如何合并这些点:
                        ^
foo.cc:5:25: error: stray '\271' in program
   我们考虑如何合并这些点:
                         ^
foo.cc:5:26: error: stray '\266' in program
   我们考虑如何合并这些点:
                          ^
foo.cc:5:27: error: stray '\350' in program
   我们考虑如何合并这些点:
                           ^
foo.cc:5:28: error: stray '\277' in program
   我们考虑如何合并这些点:
                            ^
foo.cc:5:29: error: stray '\231' in program
   我们考虑如何合并这些点:
                             ^
foo.cc:5:30: error: stray '\344' in program
   我们考虑如何合并这些点:
                              ^
foo.cc:5:31: error: stray '\272' in program
   我们考虑如何合并这些点:
                               ^
foo.cc:5:32: error: stray '\233' in program
   我们考虑如何合并这些点:
                                ^
foo.cc:5:33: error: stray '\347' in program
   我们考虑如何合并这些点:
                                 ^
foo.cc:5:34: error: stray '\202' in program
   我们考虑如何合并这些点:
                                  ^
foo.cc:5:35: error: stray '\271' in program
   我们考虑如何合并这些点:
                                   ^
foo.cc:5:36: error: stray '\357' in program
   我们考虑如何合并这些点:
                                    ^
foo.cc:5:37: error: stray '\274' in program
   我们考虑如何合并这些点:
                                     ^
foo.cc:5:38: error: stray '\232' in program
   我们考虑如何合并这些点:
                                      ^
foo.cc:7:3: error: stray '\346' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
   ^
foo.cc:7:4: error: stray '\210' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
    ^
foo.cc:7:5: error: stray '\221' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
     ^
foo.cc:7:6: error: stray '\344' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
      ^
foo.cc:7:7: error: stray '\273' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
       ^
foo.cc:7:8: error: stray '\254' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
        ^
foo.cc:7:9: error: stray '\345' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
         ^
foo.cc:7:10: error: stray '\217' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
          ^
foo.cc:7:11: error: stray '\221' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
           ^
foo.cc:7:12: error: stray '\347' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
            ^
foo.cc:7:13: error: stray '\216' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
             ^
foo.cc:7:14: error: stray '\260' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
              ^
foo.cc:7:15: error: stray '\345' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
               ^
foo.cc:7:16: error: stray '\234' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                ^
foo.cc:7:17: error: stray '\250' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                 ^
foo.cc:7:19: error: stray '\345' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                   ^
foo.cc:7:20: error: stray '\275' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                    ^
foo.cc:7:21: error: stray '\223' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                     ^
foo.cc:7:22: error: stray '\344' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                      ^
foo.cc:7:23: error: stray '\270' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                       ^
foo.cc:7:24: error: stray '\244' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                        ^
foo.cc:7:25: error: stray '\344' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                         ^
foo.cc:7:26: error: stray '\270' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                          ^
foo.cc:7:27: error: stray '\252' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                           ^
foo.cc:7:28: error: stray '\347' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                            ^
foo.cc:7:29: error: stray '\202' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                             ^
foo.cc:7:30: error: stray '\271' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                              ^
foo.cc:7:31: error: stray '\345' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                               ^
foo.cc:7:32: error: stray '\217' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                ^
foo.cc:7:33: error: stray '\257' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                 ^
foo.cc:7:34: error: stray '\344' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                  ^
foo.cc:7:35: error: stray '\273' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                   ^
foo.cc:7:36: error: stray '\245' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                    ^
foo.cc:7:37: error: stray '\345' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                     ^
foo.cc:7:38: error: stray '\210' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                      ^
foo.cc:7:39: error: stray '\260' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                       ^
foo.cc:7:40: error: stray '\350' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                        ^
foo.cc:7:41: error: stray '\276' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                         ^
foo.cc:7:42: error: stray '\276' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                          ^
foo.cc:7:43: error: stray '\347' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                           ^
foo.cc:7:44: error: stray '\232' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                            ^
foo.cc:7:45: error: stray '\204' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                             ^
foo.cc:7:46: error: stray '\347' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                              ^
foo.cc:7:47: error: stray '\202' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                               ^
foo.cc:7:48: error: stray '\271' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                ^
foo.cc:7:49: error: stray '\346' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                 ^
foo.cc:7:50: error: stray '\230' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                  ^
foo.cc:7:51: error: stray '\257' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                   ^
foo.cc:7:52: error: stray '\344' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                    ^
foo.cc:7:53: error: stray '\270' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                     ^
foo.cc:7:54: error: stray '\200' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                      ^
foo.cc:7:55: error: stray '\350' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                       ^
foo.cc:7:56: error: stray '\207' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                        ^
foo.cc:7:57: error: stray '\264' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                         ^
foo.cc:7:58: error: stray '\347' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                          ^
foo.cc:7:59: error: stray '\232' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                           ^
foo.cc:7:60: error: stray '\204' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                            ^
foo.cc:7:61: error: stray '\346' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                             ^
foo.cc:7:62: error: stray '\227' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                              ^
foo.cc:7:63: error: stray '\266' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                               ^
foo.cc:7:64: error: stray '\345' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                ^
foo.cc:7:65: error: stray '\200' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                 ^
foo.cc:7:66: error: stray '\231' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                  ^
foo.cc:7:67: error: stray '\357' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                   ^
foo.cc:7:68: error: stray '\274' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                    ^
foo.cc:7:69: error: stray '\214' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                     ^
foo.cc:7:70: error: stray '\345' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                      ^
foo.cc:7:71: error: stray '\260' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                       ^
foo.cc:7:72: error: stray '\261' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                        ^
foo.cc:7:73: error: stray '\345' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                         ^
foo.cc:7:74: error: stray '\217' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                          ^
foo.cc:7:75: error: stray '\257' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                           ^
foo.cc:7:76: error: stray '\344' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                            ^
foo.cc:7:77: error: stray '\273' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                             ^
foo.cc:7:78: error: stray '\245' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                              ^
foo.cc:7:79: error: stray '\347' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                               ^
foo.cc:7:80: error: stray '\274' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                ^
foo.cc:7:81: error: stray '\251' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                 ^
foo.cc:7:82: error: stray '\344' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                  ^
foo.cc:7:83: error: stray '\270' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                   ^
foo.cc:7:84: error: stray '\272' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                    ^
foo.cc:7:85: error: stray '\344' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                     ^
foo.cc:7:86: error: stray '\270' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                      ^
foo.cc:7:87: error: stray '\200' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                       ^
foo.cc:7:88: error: stray '\344' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                        ^
foo.cc:7:89: error: stray '\270' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                         ^
foo.cc:7:90: error: stray '\252' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                          ^
foo.cc:7:91: error: stray '\347' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                           ^
foo.cc:7:92: error: stray '\202' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                            ^
foo.cc:7:93: error: stray '\271' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                             ^
foo.cc:7:94: error: stray '\343' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                              ^
foo.cc:7:95: error: stray '\200' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                               ^
foo.cc:7:96: error: stray '\202' in program
   我们发现在 当两个点可以到达的点是一致的时候,就可以缩为一个点。
                                                                                                ^
foo.cc:9:3: error: stray '\346' in program
   我们发现*k mo T 相同就可以缩点。
   ^
foo.cc:9:4: error: stray '\210' in program
   我们发现*k mo T 相同就可以缩点。
    ^
foo.cc:9:5: error: stray '\221' in program
   我们发现*k mo T 相同就可以缩点。
     ^
foo.cc:9:6: error: stray '\344' in program
   我们发现*k mo T 相同就可以缩点。
      ^
foo.cc:9:7: error: stray '\273' in program
   我们发现*k mo T 相同就可以缩点。
       ^
foo.cc:9:8: error: stray '\254' in program
   我们发现*k mo T 相同就可以缩点。
        ^
foo.cc:9:9: error: stray '\345' in program
   我们发现*k mo T 相同就可以缩点。
         ^
foo.cc:9:10: error: stray '\217' in program
   我们发现*k mo T 相同就可以缩点。
          ^
foo.cc:9:11: error: stray '\221' in program
   我们发现*k mo T 相同就可以缩点。
           ^
foo.cc:9:12: error: stray '\347' in program
   我们发现*k mo T 相同就可以缩点。
            ^
foo.cc:9:13: error: stray '\216' in program
   我们发现*k mo T 相同就可以缩点。
             ^
foo.cc:9:14: error: stray '\260' in program
   我们发现*k mo T 相同就可以缩点。
              ^
foo.cc:9:23: error: stray '\347' in program
   我们发现*k mo T 相同就可以缩点。
                       ^
foo.cc:9:24: error: stray '\233' in program
   我们发现*k mo T 相同就可以缩点。
                        ^
foo.cc:9:25: error: stray '\270' in program
   我们发现*k mo T 相同就可以缩点。
                         ^
foo.cc:9:26: error: stray '\345' in program
   我们发现*k mo T 相同就可以缩点。
                          ^
foo.cc:9:27: error: stray '\220' in program
   我们发现*k mo T 相同就可以缩点。
                           ^
foo.cc:9:28: error: stray '\214' in program
   我们发现*k mo T 相同就可以缩点。
                            ^
foo.cc:9:29: error: stray '\345' in program
   我们发现*k mo T 相同就可以缩点。
                             ^
foo.cc:9:30: error: stray '\260' in program
   我们发现*k mo T 相同就可以缩点。
                              ^
foo.cc:9:31: error: stray '\261' in program
   我们发现*k mo T 相同就可以缩点。
                               ^
foo.cc:9:32: error: stray '\345' in program
   我们发现*k mo T 相同就可以缩点。
                                ^
foo.cc:9:33: error: stray '\217' in program
   我们发现*k mo T 相同就可以缩点。
                                 ^
foo.cc:9:34: error: stray '\257' in program
   我们发现*k mo T 相同就可以缩点。
                                  ^
foo.cc:9:35: error: stray '\344' in program
   我们发现*k mo T 相同就可以缩点。
                                   ^
foo.cc:9:36: error: stray '\273' in program
   我们发现*k mo T 相同就可以缩点。
                                    ^
foo.cc:9:37: error: stray '\245' in program
   我们发现*k mo T 相同就可以缩点。
                                     ^
foo.cc:9:38: error: stray '\347' in program
   我们发现*k mo T 相同就可以缩点。
                                      ^
foo.cc:9:39: error: stray '\274' in program
   我们发现*k mo T 相同就可以缩点。
                                       ^
foo.cc:9:40: error: stray '\251' in program
   我们发现*k mo T 相同就可以缩点。
                                        ^
foo.cc:9:41: error: stray '\347' in program
   我们发现*k mo T 相同就可以缩点。
                                         ^
foo.cc:9:42: error: stray '\202' in program
   我们发现*k mo T 相同就可以缩点。
                                          ^
foo.cc:9:43: error: stray '\271' in program
   我们发现*k mo T 相同就可以缩点。
                                           ^
foo.cc:9:44: error: stray '\343' in program
   我们发现*k mo T 相同就可以缩点。
                                            ^
foo.cc:9:45: error: stray '\200' in program
   我们发现*k mo T 相同就可以缩点。
                                             ^
foo.cc:9:46: error: stray '\202' in program
   我们发现*k mo T 相同就可以缩点。
                                              ^
foo.cc:11:3: error: stray '\346' in program
   我们发现这样子是过不了的。
   ^
foo.cc:11:4: error: stray '\210' in program
   我们发现这样子是过不了的。
    ^
foo.cc:11:5: error: stray '\221' in program
   我们发现这样子是过不了的。
     ^
foo.cc:11:6: error: stray '\344' in program
   我们发现这样子是过不了的。
      ^
foo.cc:11:7: error: stray '\273' in program
   我们发现这样子是过不了的。
       ^
foo.cc:11:8: error: stray '\254' in program
   我们发现这样子是过不了的。
        ^
foo.cc:11:9: error: stray '\345' in program
   我们发现这样子是过不了的。
         ^
foo.cc:11:10: error: stray '\217' in program
   我们发现这样子是过不了的。
          ^
foo.cc:11:11: error: stray '\221' in program
   我们发现这样子是过不了的。
           ^
foo.cc:11:12: error: stray '\347' in program
   我们发现这样子是过不了的。
            ^
foo.cc:11:13: error: stray '\216' in program
   我们发现这样子是过不了的。
             ^
foo.cc:11:14: error: stray '\260' in program
   我们发现这样子是过不了的。
              ^
foo.cc:11:15: error: stray '\350' in program
   我们发现这样子是过不了的。
               ^
foo.cc:11:16: error: stray '\277' in program
   我们发现这样子是过不了的。
                ^
foo.cc:11:17: error: stray '\231' in program
   我们发现这样子是过不了的。
                 ^
foo.cc:11:18: error: stray '\346' in program
   我们发现这样子是过不了的。
                  ^
foo.cc:11:19: error: stray '\240' in program
   我们发现这样子是过不了的。
                   ^
foo.cc:11:20: error: stray '\267' in program
   我们发现这样子是过不了的。
                    ^
foo.cc:11:21: error: stray '\345' in program
   我们发现这样子是过不了的。
                     ^
foo.cc:11:22: error: stray '\255' in program
   我们发现这样子是过不了的。
                      ^
foo.cc:11:23: error: stray '\220' in program
   我们发现这样子是过不了的。
                       ^
foo.cc:11:24: error: stray '\346' in program
   我们发现这样子是过不了的。
                        ^
foo.cc:11:25: error: stray '\230' in program
   我们发现这样子是过不了的。
                         ^
foo.cc:11:26: error: stray '\257' in program
   我们发现这样子是过不了的。
                          ^
foo.cc:11:27: error: stray '\350' in program
   我们发现这样子是过不了的。
                           ^
foo.cc:11:28: error: stray '\277' in program
   我们发现这样子是过不了的。
                            ^
foo.cc:11:29: error: stray '\207' in program
   我们发现这样子是过不了的。
                             ^
foo.cc:11:30: error: stray '\344' in program
   我们发现这样子是过不了的。
                              ^
foo.cc:11:31: error: stray '\270' in program
   我们发现这样子是过不了的。
                               ^
foo.cc:11:32: error: stray '\215' in program
   我们发现这样子是过不了的。
                                ^
foo.cc:11:33: error: stray '\344' in program
   我们发现这样子是过不了的。
                                 ^
foo.cc:11:34: error: stray '\272' in program
   我们发现这样子是过不了的。
                                  ^
foo.cc:11:35: error: stray '\206' in program
   我们发现这样子是过不了的。
                                   ^
foo.cc:11:36: error: stray '\347' in program
   我们发现这样子是过不了的。
                                    ^
foo.cc:11:37: error: stray '\232' in program
   我们发现这样子是过不了的。
                                     ^
foo.cc:11:38: error: stray '\204' in program
   我们发现这样子是过不了的。
                                      ^
foo.cc:11:39: error: stray '\343' in program
   我们发现这样子是过不了的。
                                       ^
foo.cc:11:40: error: stray '\200' in program
   我们发现这样子是过不了的。
                                        ^
foo.cc:11:41: error: stray '\202' in program
   我们发现这样子是过不了的。
                                         ^
foo.cc:13:4: error: stray '\345' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
    ^
foo.cc:13:5: error: stray '\233' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
     ^
foo.cc:13:6: error: stray '\240' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
      ^
foo.cc:13:7: error: stray '\344' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
       ^
foo.cc:13:8: error: stray '\270' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
        ^
foo.cc:13:9: error: stray '\272' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
         ^
foo.cc:13:10: error: stray '\346' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
          ^
foo.cc:13:11: error: stray '\210' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
           ^
foo.cc:13:12: error: stray '\221' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
            ^
foo.cc:13:13: error: stray '\344' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
             ^
foo.cc:13:14: error: stray '\273' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
              ^
foo.cc:13:15: error: stray '\254' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
               ^
foo.cc:13:16: error: stray '\345' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                ^
foo.cc:13:17: error: stray '\205' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                 ^
foo.cc:13:18: error: stray '\266' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                  ^
foo.cc:13:19: error: stray '\345' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                   ^
foo.cc:13:20: error: stray '\256' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                    ^
foo.cc:13:21: error: stray '\236' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                     ^
foo.cc:13:22: error: stray '\347' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                      ^
foo.cc:13:23: error: stray '\274' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                       ^
foo.cc:13:24: error: stray '\251' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                        ^
foo.cc:13:25: error: stray '\347' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                         ^
foo.cc:13:26: error: stray '\202' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                          ^
foo.cc:13:27: error: stray '\271' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                           ^
foo.cc:13:28: error: stray '\344' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                            ^
foo.cc:13:29: error: stray '\273' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                             ^
foo.cc:13:30: error: stray '\245' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                              ^
foo.cc:13:31: error: stray '\345' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                               ^
foo.cc:13:32: error: stray '\220' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                ^
foo.cc:13:33: error: stray '\216' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                 ^
foo.cc:13:34: error: stray '\357' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                  ^
foo.cc:13:35: error: stray '\274' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                   ^
foo.cc:13:36: error: stray '\214' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                    ^
foo.cc:13:37: error: stray '\346' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                     ^
foo.cc:13:38: error: stray '\210' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                      ^
foo.cc:13:39: error: stray '\221' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                       ^
foo.cc:13:40: error: stray '\344' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                        ^
foo.cc:13:41: error: stray '\273' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                         ^
foo.cc:13:42: error: stray '\254' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                          ^
foo.cc:13:43: error: stray '\345' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                           ^
foo.cc:13:44: error: stray '\210' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                            ^
foo.cc:13:45: error: stray '\222' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                             ^
foo.cc:13:46: error: stray '\345' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                              ^
foo.cc:13:47: error: stray '\275' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                               ^
foo.cc:13:48: error: stray '\222' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                ^
foo.cc:13:49: error: stray '\344' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                 ^
foo.cc:13:50: error: stray '\270' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                  ^
foo.cc:13:51: error: stray '\272' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                   ^
foo.cc:13:52: error: stray '\344' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                    ^
foo.cc:13:53: error: stray '\272' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                     ^
foo.cc:13:54: error: stray '\206' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                      ^
foo.cc:13:55: error: stray '\344' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                       ^
foo.cc:13:56: error: stray '\270' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                        ^
foo.cc:13:57: error: stray '\200' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                         ^
foo.cc:13:58: error: stray '\344' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                          ^
foo.cc:13:59: error: stray '\270' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                           ^
foo.cc:13:60: error: stray '\252' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                            ^
foo.cc:13:61: error: stray '\345' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                             ^
foo.cc:13:62: error: stray '\255' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                              ^
foo.cc:13:63: error: stray '\220' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                               ^
foo.cc:13:64: error: stray '\351' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                ^
foo.cc:13:65: error: stray '\227' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                 ^
foo.cc:13:66: error: stray '\256' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                  ^
foo.cc:13:67: error: stray '\351' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                   ^
foo.cc:13:68: error: stray '\242' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                    ^
foo.cc:13:69: error: stray '\230' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                     ^
foo.cc:13:70: error: stray '\357' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                      ^
foo.cc:13:71: error: stray '\274' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                       ^
foo.cc:13:72: error: stray '\214' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                        ^
foo.cc:13:73: error: stray '\346' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                         ^
foo.cc:13:74: error: stray '\211' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                          ^
foo.cc:13:75: error: stray '\200' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                           ^
foo.cc:13:76: error: stray '\344' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                            ^
foo.cc:13:77: error: stray '\273' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                             ^
foo.cc:13:78: error: stray '\245' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                              ^
foo.cc:13:79: error: stray '\346' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                               ^
foo.cc:13:80: error: stray '\210' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                ^
foo.cc:13:81: error: stray '\221' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                 ^
foo.cc:13:82: error: stray '\344' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                  ^
foo.cc:13:83: error: stray '\273' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                   ^
foo.cc:13:84: error: stray '\254' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                    ^
foo.cc:13:85: error: stray '\350' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                     ^
foo.cc:13:86: error: stray '\246' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                      ^
foo.cc:13:87: error: stray '\201' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                       ^
foo.cc:13:88: error: stray '\350' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                        ^
foo.cc:13:89: error: stray '\277' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                         ^
foo.cc:13:90: error: stray '\255' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                          ^
foo.cc:13:91: error: stray '\344' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                           ^
foo.cc:13:92: error: stray '\273' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                            ^
foo.cc:13:93: error: stray '\243' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                             ^
foo.cc:13:94: error: stray '\344' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                              ^
foo.cc:13:95: error: stray '\270' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                               ^
foo.cc:13:96: error: stray '\213' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                                ^
foo.cc:13:97: error: stray '\345' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                                 ^
foo.cc:13:98: error: stray '\216' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                                  ^
foo.cc:13:99: error: stray '\273' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                                   ^
foo.cc:13:100: error: stray '\343' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                                    ^
foo.cc:13:101: error: stray '\200' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                                     ^
foo.cc:13:102: error: stray '\202' in program
    因为我们其实缩点以后,我们划归为了一个子问题,所以我们要迭代下去。
                                                                                                      ^
foo.cc:15:4: error: stray '\346' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
    ^
foo.cc:15:5: error: stray '\210' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
     ^
foo.cc:15:6: error: stray '\221' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
      ^
foo.cc:15:7: error: stray '\344' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
       ^
foo.cc:15:8: error: stray '\273' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
        ^
foo.cc:15:9: error: stray '\254' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
         ^
foo.cc:15:10: error: stray '\346' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
          ^
foo.cc:15:11: error: stray '\200' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
           ^
foo.cc:15:12: error: stray '\216' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
            ^
foo.cc:15:13: error: stray '\344' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
             ^
foo.cc:15:14: error: stray '\271' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
              ^
foo.cc:15:15: error: stray '\210' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
               ^
foo.cc:15:16: error: stray '\350' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                ^
foo.cc:15:17: error: stray '\277' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                 ^
foo.cc:15:18: error: stray '\255' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                  ^
foo.cc:15:19: error: stray '\344' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                   ^
foo.cc:15:20: error: stray '\273' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                    ^
foo.cc:15:21: error: stray '\243' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                     ^
foo.cc:15:22: error: stray '\345' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                      ^
foo.cc:15:23: error: stray '\221' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                       ^
foo.cc:15:24: error: stray '\242' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                        ^
foo.cc:15:25: error: stray '\357' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                         ^
foo.cc:15:26: error: stray '\274' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                          ^
foo.cc:15:27: error: stray '\214' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                           ^
foo.cc:15:28: error: stray '\346' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                            ^
foo.cc:15:29: error: stray '\210' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                             ^
foo.cc:15:30: error: stray '\221' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                              ^
foo.cc:15:31: error: stray '\344' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                               ^
foo.cc:15:32: error: stray '\273' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                ^
foo.cc:15:33: error: stray '\254' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                 ^
foo.cc:15:34: error: stray '\350' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                  ^
foo.cc:15:35: error: stray '\200' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                   ^
foo.cc:15:36: error: stray '\203' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                    ^
foo.cc:15:37: error: stray '\350' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                     ^
foo.cc:15:38: error: stray '\231' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                      ^
foo.cc:15:39: error: stray '\221' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                       ^
foo.cc:15:40: error: stray '\347' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                        ^
foo.cc:15:41: error: stray '\274' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                         ^
foo.cc:15:42: error: stray '\251' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                          ^
foo.cc:15:43: error: stray '\347' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                           ^
foo.cc:15:44: error: stray '\202' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                            ^
foo.cc:15:45: error: stray '\271' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                             ^
foo.cc:15:46: error: stray '\344' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                              ^
foo.cc:15:47: error: stray '\273' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                               ^
foo.cc:15:48: error: stray '\245' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                ^
foo.cc:15:49: error: stray '\345' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                 ^
foo.cc:15:50: error: stray '\220' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                  ^
foo.cc:15:51: error: stray '\216' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                   ^
foo.cc:15:52: error: stray '\347' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                    ^
foo.cc:15:53: error: stray '\224' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                     ^
foo.cc:15:54: error: stray '\250' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                      ^
foo.cc:15:55: error: stray '\346' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                       ^
foo.cc:15:56: error: stray '\240' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                        ^
foo.cc:15:57: error: stray '\207' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                         ^
foo.cc:15:58: error: stray '\345' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                          ^
foo.cc:15:59: error: stray '\217' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                           ^
foo.cc:15:60: error: stray '\267' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                            ^
foo.cc:15:61: error: stray '\345' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                             ^
foo.cc:15:62: error: stray '\260' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                              ^
foo.cc:15:63: error: stray '\217' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                               ^
foo.cc:15:64: error: stray '\347' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                ^
foo.cc:15:65: error: stray '\232' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                 ^
foo.cc:15:66: error: stray '\204' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                  ^
foo.cc:15:67: error: stray '\347' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                   ^
foo.cc:15:68: error: stray '\202' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                    ^
foo.cc:15:69: error: stray '\271' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                     ^
foo.cc:15:70: error: stray '\346' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                      ^
foo.cc:15:71: error: stray '\235' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                       ^
foo.cc:15:72: error: stray '\245' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                        ^
foo.cc:15:73: error: stray '\350' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                         ^
foo.cc:15:74: error: stray '\241' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                          ^
foo.cc:15:75: error: stray '\250' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                           ^
foo.cc:15:76: error: stray '\347' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                            ^
foo.cc:15:77: error: stray '\244' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                             ^
foo.cc:15:78: error: stray '\272' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                              ^
foo.cc:15:79: error: stray '\346' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                               ^
foo.cc:15:80: error: stray '\226' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                                ^
foo.cc:15:81: error: stray '\260' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                                 ^
foo.cc:15:82: error: stray '\347' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                                  ^
foo.cc:15:83: error: stray '\202' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                                   ^
foo.cc:15:84: error: stray '\271' in program
    我们怎么迭代呢,我们考虑缩点以后用标号小的点来表示新点
                                                                                    ^
foo.cc:17:4: error: stray '\351' in program
    那我们发现每次后,剩下的0 到 X 联续的。
    ^
foo.cc:17:5: error: stray '\202' in program
    那我们发现每次后,剩下的0 到 X 联续的。
     ^
foo.cc:17:6: error: stray '\243' in program
    那我们发现每次后,剩下的0 到 X 联续的。
      ^
foo.cc:17:7: error: stray '\346' in program
    那我们发现每次后,剩下的0 到 X 联续的。
       ^
foo.cc:17:8: error: stray '\210' in program
    那我们发现每次后,剩下的0 到 X 联续的。
        ^
foo.cc:17:9: error: stray '\221' in program
    那我们发现每次后,剩下的0 到 X 联续的。
         ^
foo.cc:17:10: error: stray '\344' in program
    那我们发现每次后,剩下的0 到 X 联续的。
          ^
foo.cc:17:11: error: stray '\273' in program
    那我们发现每次后,剩下的0 到 X 联续的。
           ^
foo.cc:17:12: error: stray '\254' in program
    那我们发现每次后,剩下的0 到 X 联续的。
            ^
foo.cc:17:13: error: stray '\345' in program
    那我们发现每次后,剩下的0 到 X 联续的。
             ^
foo.cc:17:14: error: stray '\217' in program
    那我们发现每次后,剩下的0 到 X 联续的。
              ^
foo.cc:17:15: error: stray '\221' in program
    那我们发现每次后,剩下的0 到 X 联续的。
               ^
foo.cc:17:16: error: stray '\347' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                ^
foo.cc:17:17: error: stray '\216' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                 ^
foo.cc:17:18: error: stray '\260' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                  ^
foo.cc:17:19: error: stray '\346' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                   ^
foo.cc:17:20: error: stray '\257' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                    ^
foo.cc:17:21: error: stray '\217' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                     ^
foo.cc:17:22: error: stray '\346' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                      ^
foo.cc:17:23: error: stray '\254' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                       ^
foo.cc:17:24: error: stray '\241' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                        ^
foo.cc:17:25: error: stray '\345' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                         ^
foo.cc:17:26: error: stray '\220' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                          ^
foo.cc:17:27: error: stray '\216' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                           ^
foo.cc:17:28: error: stray '\357' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                            ^
foo.cc:17:29: error: stray '\274' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                             ^
foo.cc:17:30: error: stray '\214' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                              ^
foo.cc:17:31: error: stray '\345' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                               ^
foo.cc:17:32: error: stray '\211' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                ^
foo.cc:17:33: error: stray '\251' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                 ^
foo.cc:17:34: error: stray '\344' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                  ^
foo.cc:17:35: error: stray '\270' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                   ^
foo.cc:17:36: error: stray '\213' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                    ^
foo.cc:17:37: error: stray '\347' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                     ^
foo.cc:17:38: error: stray '\232' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                      ^
foo.cc:17:39: error: stray '\204' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                       ^
foo.cc:17:42: error: stray '\345' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                          ^
foo.cc:17:43: error: stray '\210' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                           ^
foo.cc:17:44: error: stray '\260' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                            ^
foo.cc:17:48: error: stray '\350' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                                ^
foo.cc:17:49: error: stray '\201' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                                 ^
foo.cc:17:50: error: stray '\224' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                                  ^
foo.cc:17:51: error: stray '\347' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                                   ^
foo.cc:17:52: error: stray '\273' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                                    ^
foo.cc:17:53: error: stray '\255' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                                     ^
foo.cc:17:54: error: stray '\347' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                                      ^
foo.cc:17:55: error: stray '\232' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                                       ^
foo.cc:17:56: error: stray '\204' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                                        ^
foo.cc:17:57: error: stray '\343' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                                         ^
foo.cc:17:58: error: stray '\200' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                                          ^
foo.cc:17:59: error: stray '\202' in program
    那我们发现每次后,剩下的0 到 X 联续的。
                                                           ^
foo.cc:19:3: error: stray '\346' in program
   我们可以每次拿掉一个 gcd 迭代。
   ^
foo.cc:19:4: error: stray '\210' in program
   我们可以每次拿掉一个 gcd 迭代。
    ^
foo.cc:19:5: error: stray '\221' in program
   我们可以每次拿掉一个 gcd 迭代。
     ^
foo.cc:19:6: error: stray '\344' in program
   我们可以每次拿掉一个 gcd 迭代。
      ^
foo.cc:19:7: error: stray '\273' in program
   我们可以每次拿掉一个 gcd 迭代。
       ^
foo.cc:19:8: error: stray '\254' in program
   我们可以每次拿掉一个 gcd 迭代。
        ^
foo.cc:19:9: error: stray '\345' in program
   我们可以每次拿掉一个 gcd 迭代。
         ^
foo.cc:19:10: error: stray '\217' in program
   我们可以每次拿掉一个 gcd 迭代。
          ^
foo.cc:19:11: error: stray '\257' in program
   我们可以每次拿掉一个 gcd 迭代。
           ^
foo.cc:19:12: error: stray '\344' in program
   我们可以每次拿掉一个 gcd 迭代。
            ^
foo.cc:19:13: error: stray '\273' in program
   我们可以每次拿掉一个 gcd 迭代。
             ^
foo.cc:19:14: error: stray '\245' in program
   我们可以每次拿掉一个 gcd 迭代。
              ^
foo.cc:19:15: error: stray '\346' in program
   我们可以每次拿掉一个 gcd 迭代。
               ^
foo.cc:19:16: error: stray '\257' in program
   我们可以每次拿掉一个 gcd 迭代。
                ^
foo.cc:19:17: error: stray '\217' in program
   我们可以每次拿掉一个 gcd 迭代。
                 ^
foo.cc:19:18: error: stray '\346' in program
   我们可以每次拿掉一个 gcd 迭代。
                  ^
foo.cc:19:19: error: stray '\254' in program
   我们可以每次拿掉一个 gcd 迭代。
                   ^
foo.cc:19:20: error: stray '\241' in program
   我们可以每次拿掉一个 gcd 迭代。
                    ^
foo.cc:19:21: error: stray '\346' in program
   我们可以每次拿掉一个 gcd 迭代。
                     ^
foo.cc:19:22: error: stray '\213' in program
   我们可以每次拿掉一个 gcd 迭代。
                      ^
foo.cc:19:23: error: stray '\277' in program
   我们可以每次拿掉一个 gcd 迭代。
                       ^
foo.cc:19:24: error: stray '\346' in program
   我们可以每次拿掉一个 gcd 迭代。
                        ^
foo.cc:19:25: error: stray '\216' in program
   我们可以每次拿掉一个 gcd 迭代。
                         ^
foo.cc:19:26: error: stray '\211' in program
   我们可以每次拿掉一个 gcd 迭代。
                          ^
foo.cc:19:27: error: stray '\344' in program
   我们可以每次拿掉一个 gcd 迭代。
                           ^
foo.cc:19:28: error: stray '\270' in program
   我们可以每次拿掉一个 gcd 迭代。
                            ^
foo.cc:19:29: error: stray '\200' in program
   我们可以每次拿掉一个 gcd 迭代。
                             ^
foo.cc:19:30: error: stray '\344' in program
   我们可以每次拿掉一个 gcd 迭代。
                              ^
foo.cc:19:31: error: stray '\270' in program
   我们可以每次拿掉一个 gcd 迭代。
                               ^
foo.cc:19:32: error: stray '\252' in program
   我们可以每次拿掉一个 gcd 迭代。
                                ^
foo.cc:19:38: error: stray '\350' in program
   我们可以每次拿掉一个 gcd 迭代。
                                      ^
foo.cc:19:39: error: stray '\277' in program
   我们可以每次拿掉一个 gcd 迭代。
                                       ^
foo.cc:19:40: error: stray '\255' in program
   我们可以每次拿掉一个 gcd 迭代。
                                        ^
foo.cc:19:41: error: stray '\344' in program
   我们可以每次拿掉一个 gcd 迭代。
                                         ^
foo.cc:19:42: error: stray '\273' in program
   我们可以每次拿掉一个 gcd 迭代。
                                          ^
foo.cc:19:43: error: stray '\243' in program
   我们可以每次拿掉一个 gcd 迭代。
                                           ^
foo.cc:19:44: error: stray '\343' in program
   我们可以每次拿掉一个 gcd 迭代。
                                            ^
foo.cc:19:45: error: stray '\200' in program
   我们可以每次拿掉一个 gcd 迭代。
                                             ^
foo.cc:19:46: error: stray '\202' in program
   我们可以每次拿掉一个 gcd 迭代。
                                              ^
foo.cc:21:3: error: stray '\347' in program
   终止条件是 X与 T(迭代后的)互质。
   ^
foo.cc:21:4: error: stray '\273' in program
   终止条件是 X与 T(迭代后的)互质。
    ^
foo.cc:21:5: error: stray '\210' in program
   终止条件是 X与 T(迭代后的)互质。
     ^
foo.cc:21:6: error: stray '\346' in program
   终止条件是 X与 T(迭代后的)互质。
      ^
foo.cc:21:7: error: stray '\255' in program
   终止条件是 X与 T(迭代后的)互质。
       ^
foo.cc:21:8: error: stray '\242' in program
   终止条件是 X与 T(迭代后的)互质。
        ^
foo.cc:21:9: error: stray '\346' in program
   终止条件是 X与 T(迭代后的)互质。
         ^
foo.cc:21:10: error: stray '\235' in program
   终止条件是 X与 T(迭代后的)互质。
          ^
foo.cc:21:11: error: stray '\241' in program
   终止条件是 X与 T(迭代后的)互质。
           ^
foo.cc:21:12: error: stray '\344' in program
   终止条件是 X与 T(迭代后的)互质。
            ^
foo.cc:21:13: error: stray '\273' in program
   终止条件是 X与 T(迭代后的)互质。
             ^
foo.cc:21:14: error: stray '\266' in program
   终止条件是 X与 T(迭代后的)互质。
              ^
foo.cc:21:15: error: stray '\346' in program
   终止条件是 X与 T(迭代后的)互质。
               ^
foo.cc:21:16: error: stray '\230' in program
   终止条件是 X与 T(迭代后的)互质。
                ^
foo.cc:21:17: error: stray '\257' in program
   终止条件是 X与 T(迭代后的)互质。
                 ^
foo.cc:21:20: error: stray '\344' in program
   终止条件是 X与 T(迭代后的)互质。
                    ^
foo.cc:21:21: error: stray '\270' in program
   终止条件是 X与 T(迭代后的)互质。
                     ^
foo.cc:21:22: error: stray '\216' in program
   终止条件是 X与 T(迭代后的)互质。
                      ^
foo.cc:21:25: error: stray '\357' in program
   终止条件是 X与 T(迭代后的)互质。
                         ^
foo.cc:21:26: error: stray '\274' in program
   终止条件是 X与 T(迭代后的)互质。
                          ^
foo.cc:21:27: error: stray '\210' in program
   终止条件是 X与 T(迭代后的)互质。
                           ^
foo.cc:21:28: error: stray '\350' in program
   终止条件是 X与 T(迭代后的)互质。
                            ^
foo.cc:21:29: error: stray '\277' in program
   终止条件是 X与 T(迭代后的)互质。
                             ^
foo.cc:21:30: error: stray '\255' in program
   终止条件是 X与 T(迭代后的)互质。
                              ^
foo.cc:21:31: error: stray '\344' in program
   终止条件是 X与 T(迭代后的)互质。
                               ^
foo.cc:21:32: error: stray '\273' in program
   终止条件是 X与 T(迭代后的)互质。
                                ^
foo.cc:21:33: error: stray '\243' in program
   终止条件是 X与 T(迭代后的)互质。
                                 ^
foo.cc:21:34: error: stray '\345' in program
   终止条件是 X与 T(迭代后的)互质。
                                  ^
foo.cc:21:35: error: stray '\220' in program
   终止条件是 X与 T(迭代后的)互质。
                                   ^
foo.cc:21:36: error: stray '\216' in program
   终止条件是 X与 T(迭代后的)互质。
                                    ^
foo.cc:21:37: error: stray '\347' in program
   终止条件是 X与 T(迭代后的)互质。
                                     ^
foo.cc:21:38: error: stray '\232' in program
   终止条件是 X与 T(迭代后的)互质。
                                      ^
foo.cc:21:39: error: stray '\204' in program
   终止条件是 X与 T(迭代后的)互质。
                                       ^
foo.cc:21:40: error: stray '\357' in program
   终止条件是 X与 T(迭代后的)互质。
                                        ^
foo.cc:21:41: error: stray '\274' in program
   终止条件是 X与 T(迭代后的)互质。
                                         ^
foo.cc:21:42: error: stray '\211' in program
   终止条件是 X与 T(迭代后的)互质。
                                          ^
foo.cc:21:43: error: stray '\344' in program
   终止条件是 X与 T(迭代后的)互质。
                                           ^
foo.cc:21:44: error: stray '\272' in program
   终止条件是 X与 T(迭代后的)互质。
                                            ^
foo.cc:21:45: error: stray '\222' in program
   终止条件是 X与 T(迭代后的)互质。
                                             ^
foo.cc:21:46: error: stray '\350' in program
   终止条件是 X与 T(迭代后的)互质。
                                              ^
foo.cc:21:47: error: stray '\264' in program
   终止条件是 X与 T(迭代后的)互质。
                                               ^
foo.cc:21:48: error: stray '\250' in program
   终止条件是 X与 T(迭代后的)互质。
                                                ^
foo.cc:21:49: error: stray '\343' in program
   终止条件是 X与 T(迭代后的)互质。
                                                 ^
foo.cc:21:50: error: stray '\200' in program
   终止条件是 X与 T(迭代后的)互质。
                                                  ^
foo.cc:21:51: error: stray '\202' in program
   终止条件是 X与 T(迭代后的)互质。
                                                   ^
foo.cc:23:2: error: stray '\350' in program
  这样做的正确性比较显然吧。
  ^
foo.cc:23:3: error: stray '\277' in program
  这样做的正确性比较显然吧。
   ^
foo.cc:23:4: error: stray '\231' in program
  这样做的正确性比较显然吧。
    ^
foo.cc:23:5: error: stray '\346' in program
  这样做的正确性比较显然吧。
     ^
foo.cc:23:6: error: stray '\240' in program
  这样做的正确性比较显然吧。
      ^
foo.cc:23:7: error: stray '\267' in program
  这样做的正确性比较显然吧。
       ^
foo.cc:23:8: error: stray '\345' in program
  这样做的正确性比较显然吧。
        ^
foo.cc:23:9: error: stray '\201' in program
  这样做的正确性比较显然吧。
         ^
foo.cc:23:10: error: stray '\232' in program
  这样做的正确性比较显然吧。
          ^
foo.cc:23:11: error: stray '\347' in program
  这样做的正确性比较显然吧。
           ^
foo.cc:23:12: error: stray '\232' in program
  这样做的正确性比较显然吧。
            ^
foo.cc:23:13: error: stray '\204' in program
  这样做的正确性比较显然吧。
             ^
foo.cc:23:14: error: stray '\346' in program
  这样做的正确性比较显然吧。
              ^
foo.cc:23:15: error: stray '\255' in program
  这样做的正确性比较显然吧。
               ^
foo.cc:23:16: error: stray '\243' in program
  这样做的正确性比较显然吧。
                ^
foo.cc:23:17: error: stray '\347' in program
  这样做的正确性比较显然吧。
                 ^
foo.cc:23:18: error: stray '\241' in program
  这样做的正确性比较显然吧。
                  ^
foo.cc:23:19: error: stray '\256' in program
  这样做的正确性比较显然吧。
                   ^
foo.cc:23:20: error: stray '\346' in program
  这样做的正确性比较显然吧。
                    ^
foo.cc:23:21: error: stray '\200' in program
  这样做的正确性比较显然吧。
                     ^
foo.cc:23:22: error: stray '\247' in program
  这样做的正确性比较显然吧。
                      ^
foo.cc:23:23: error: stray '\346' in program
  这样做的正确性比较显然吧。
                       ^
foo.cc:23:24: error: stray '\257' in program
  这样做的正确性比较显然吧。
                        ^
foo.cc:23:25: error: stray '\224' in program
  这样做的正确性比较显然吧。
                         ^
foo.cc:23:26: error: stray '\350' in program
  这样做的正确性比较显然吧。
                          ^
foo.cc:23:27: error: stray '\276' in program
  这样做的正确性比较显然吧。
                           ^
foo.cc:23:28: error: stray '\203' in program
  这样做的正确性比较显然吧。
                            ^
foo.cc:23:29: error: stray '\346' in program
  这样做的正确性比较显然吧。
                             ^
foo.cc:23:30: error: stray '\230' in program
  这样做的正确性比较显然吧。
                              ^
foo.cc:23:31: error: stray '\276' in program
  这样做的正确性比较显然吧。
                               ^
foo.cc:23:32: error: stray '\347' in program
  这样做的正确性比较显然吧。
                                ^
foo.cc:23:33: error: stray '\204' in program
  这样做的正确性比较显然吧。
                                 ^
foo.cc:23:34: error: stray '\266' in program
  这样做的正确性比较显然吧。
                                  ^
foo.cc:23:35: error: stray '\345' in program
  这样做的正确性比较显然吧。
                                   ^
foo.cc:23:36: error: stray '\220' in program
  这样做的正确性比较显然吧。
                                    ^
foo.cc:23:37: error: stray '\247' in program
  这样做的正确性比较显然吧。
                                     ^
foo.cc:23:38: error: stray '\343' in program
  这样做的正确性比较显然吧。
                                      ^
foo.cc:23:39: error: stray '\200' in program
  这样做的正确性比较显然吧。
                                       ^
foo.cc:23:40: error: stray '\202' in program
  这样做的正确性比较显然吧。
                                        ^
foo.cc:25:3: error: stray '\350' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
   ^
foo.cc:25:4: error: stray '\200' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
    ^
foo.cc:25:5: error: stray '\203' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
     ^
foo.cc:25:6: error: stray '\350' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
      ^
foo.cc:25:7: error: stray '\257' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
       ^
foo.cc:25:8: error: stray '\225' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
        ^
foo.cc:25:9: error: stray '\347' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
         ^
foo.cc:25:10: error: stray '\232' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
          ^
foo.cc:25:11: error: stray '\204' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
           ^
foo.cc:25:12: error: stray '\346' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
            ^
foo.cc:25:13: error: stray '\227' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
             ^
foo.cc:25:14: error: stray '\266' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
              ^
foo.cc:25:15: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
               ^
foo.cc:25:16: error: stray '\200' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                ^
foo.cc:25:17: error: stray '\231' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                 ^
foo.cc:25:24: error: stray '\347' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                        ^
foo.cc:25:25: error: stray '\232' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                         ^
foo.cc:25:26: error: stray '\204' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                          ^
foo.cc:25:27: error: stray '\350' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                           ^
foo.cc:25:28: error: stray '\256' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                            ^
foo.cc:25:29: error: stray '\244' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                             ^
foo.cc:25:30: error: stray '\344' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                              ^
foo.cc:25:31: error: stray '\270' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                               ^
foo.cc:25:32: error: stray '\272' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                ^
foo.cc:25:33: error: stray '\350' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                 ^
foo.cc:25:34: error: stray '\277' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                  ^
foo.cc:25:35: error: stray '\231' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                   ^
foo.cc:25:36: error: stray '\346' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                    ^
foo.cc:25:37: error: stray '\230' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                     ^
foo.cc:25:38: error: stray '\257' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                      ^
foo.cc:25:39: error: stray '\346' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                       ^
foo.cc:25:40: error: stray '\225' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                        ^
foo.cc:25:41: error: stray '\260' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                         ^
foo.cc:25:42: error: stray '\350' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                          ^
foo.cc:25:43: error: stray '\256' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                           ^
foo.cc:25:44: error: stray '\272' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                            ^
foo.cc:25:45: error: stray '\347' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                             ^
foo.cc:25:46: error: stray '\233' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                              ^
foo.cc:25:47: error: stray '\270' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                               ^
foo.cc:25:48: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                ^
foo.cc:25:49: error: stray '\205' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                 ^
foo.cc:25:50: error: stray '\263' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                  ^
foo.cc:25:51: error: stray '\347' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                   ^
foo.cc:25:52: error: stray '\232' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                    ^
foo.cc:25:53: error: stray '\204' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                     ^
foo.cc:25:54: error: stray '\343' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                      ^
foo.cc:25:55: error: stray '\200' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                       ^
foo.cc:25:56: error: stray '\202' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                        ^
foo.cc:25:57: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                         ^
foo.cc:25:58: error: stray '\272' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                          ^
foo.cc:25:59: error: stray '\224' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                           ^
foo.cc:25:60: error: stray '\350' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                            ^
foo.cc:25:61: error: stray '\257' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                             ^
foo.cc:25:62: error: stray '\245' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                              ^
foo.cc:25:63: error: stray '\344' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                               ^
foo.cc:25:64: error: stray '\274' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                ^
foo.cc:25:65: error: stray '\232' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                 ^
foo.cc:25:66: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                  ^
foo.cc:25:67: error: stray '\270' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                   ^
foo.cc:25:68: error: stray '\246' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                    ^
foo.cc:25:69: error: stray '\344' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                     ^
foo.cc:25:70: error: stray '\270' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                      ^
foo.cc:25:71: error: stray '\252' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                       ^
foo.cc:25:74: error: stray '\357' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                          ^
foo.cc:25:75: error: stray '\274' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                           ^
foo.cc:25:76: error: stray '\214' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                            ^
foo.cc:25:77: error: stray '\351' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                             ^
foo.cc:25:78: error: stray '\273' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                              ^
foo.cc:25:79: error: stray '\230' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                               ^
foo.cc:25:80: error: stray '\351' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                ^
foo.cc:25:81: error: stray '\273' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                 ^
foo.cc:25:82: error: stray '\230' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                  ^
foo.cc:25:83: error: stray '\347' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                   ^
foo.cc:25:84: error: stray '\232' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                    ^
foo.cc:25:85: error: stray '\204' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                     ^
foo.cc:25:86: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                      ^
foo.cc:25:87: error: stray '\207' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                       ^
foo.cc:25:88: error: stray '\217' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                        ^
foo.cc:25:89: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                         ^
foo.cc:25:90: error: stray '\216' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                          ^
foo.cc:25:91: error: stray '\273' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                           ^
foo.cc:25:93: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                             ^
foo.cc:25:94: error: stray '\271' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                              ^
foo.cc:25:95: error: stray '\263' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                               ^
foo.cc:25:96: error: stray '\346' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                ^
foo.cc:25:97: error: stray '\226' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                 ^
foo.cc:25:98: error: stray '\271' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                  ^
foo.cc:25:99: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                   ^
foo.cc:25:100: error: stray '\233' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                    ^
foo.cc:25:101: error: stray '\240' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                     ^
foo.cc:25:102: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                      ^
foo.cc:25:103: error: stray '\255' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                       ^
foo.cc:25:104: error: stray '\220' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                        ^
foo.cc:25:105: error: stray '\347' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                         ^
foo.cc:25:106: error: stray '\232' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                          ^
foo.cc:25:107: error: stray '\204' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                           ^
foo.cc:25:108: error: stray '\350' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                            ^
foo.cc:25:109: error: stray '\264' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                             ^
foo.cc:25:110: error: stray '\241' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                              ^
foo.cc:25:111: error: stray '\347' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                               ^
foo.cc:25:112: error: stray '\214' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                ^
foo.cc:25:113: error: stray '\256' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                 ^
foo.cc:25:114: error: stray '\357' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                  ^
foo.cc:25:115: error: stray '\274' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                   ^
foo.cc:25:116: error: stray '\214' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                    ^
foo.cc:25:117: error: stray '\351' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                     ^
foo.cc:25:118: error: stray '\235' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                      ^
foo.cc:25:119: error: stray '\236' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                       ^
foo.cc:25:120: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                        ^
foo.cc:25:121: error: stray '\270' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                         ^
foo.cc:25:122: error: stray '\270' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                          ^
foo.cc:25:123: error: stray '\347' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                           ^
foo.cc:25:124: error: stray '\245' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                            ^
foo.cc:25:125: error: stray '\236' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                             ^
foo.cc:25:126: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                              ^
foo.cc:25:127: error: stray '\245' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                               ^
foo.cc:25:128: error: stray '\207' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                ^
foo.cc:25:129: error: stray '\347' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                 ^
foo.cc:25:130: error: stray '\232' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                  ^
foo.cc:25:131: error: stray '\204' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                   ^
foo.cc:25:132: error: stray '\346' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                    ^
foo.cc:25:133: error: stray '\230' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                     ^
foo.cc:25:134: error: stray '\257' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                      ^
foo.cc:25:135: error: stray '\357' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                       ^
foo.cc:25:136: error: stray '\274' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                        ^
foo.cc:25:137: error: stray '\214' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                         ^
foo.cc:25:138: error: stray '\350' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                          ^
foo.cc:25:139: error: stray '\277' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                           ^
foo.cc:25:140: error: stray '\207' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                            ^
foo.cc:25:141: error: stray '\344' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                             ^
foo.cc:25:142: error: stray '\272' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                              ^
foo.cc:25:143: error: stray '\206' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                               ^
foo.cc:25:144: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                ^
foo.cc:25:145: error: stray '\244' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                 ^
foo.cc:25:146: error: stray '\247' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                  ^
foo.cc:25:147: error: stray '\346' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                   ^
foo.cc:25:148: error: stray '\240' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                    ^
foo.cc:25:149: error: stray '\267' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                     ^
foo.cc:25:150: error: stray '\344' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                      ^
foo.cc:25:151: error: stray '\276' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                       ^
foo.cc:25:152: error: stray '\213' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                        ^
foo.cc:25:153: error: stray '\343' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                         ^
foo.cc:25:154: error: stray '\200' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                          ^
foo.cc:25:155: error: stray '\202' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                           ^
foo.cc:25:156: error: stray '\347' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                            ^
foo.cc:25:157: error: stray '\204' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                             ^
foo.cc:25:158: error: stray '\266' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                              ^
foo.cc:25:159: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                               ^
foo.cc:25:160: error: stray '\220' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                ^
foo.cc:25:161: error: stray '\216' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                 ^
foo.cc:25:162: error: stray '\345' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                  ^
foo.cc:25:163: error: stray '\215' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                   ^
foo.cc:25:164: error: stray '\216' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                    ^
foo.cc:25:165: error: stray '\344' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                     ^
foo.cc:25:166: error: stray '\270' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                      ^
foo.cc:25:167: error: stray '\275' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                       ^
foo.cc:25:168: error: stray '\347' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                        ^
foo.cc:25:169: error: stray '\210' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                         ^
foo.cc:25:170: error: stray '\206' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                          ^
foo.cc:25:171: error: stray '\351' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                           ^
foo.cc:25:172: error: stray '\233' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                            ^
foo.cc:25:173: error: stray '\266' in program
   考试的时候simple的认为这是数论相关的。应该会带个u ,默默的减去 平方因子的贡献,非常神奇的是,过了大样例。然后华丽爆零
                                                                                                                                                                             ^
foo.cc:1:45: error: 'T' does not name a type
   我们发现自动机的平凡上界就是T。
                                             ^
In file included from /usr/include/c++/7/cmath:43:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/include/c++/7/ext/type_traits.h:162:35: error: 'bool __gnu_cxx::__is_null_pointer' redeclared as different kind of symbol
   __is_null_pointer(std::nullptr_t)
                                   ^
/usr/include/c++/7/ext/type_traits.h:157:5: note: previous declaration 'template<class _Type> bool __gnu_cxx::__is_null_pointer(_Type)'
     __is_null_pointer(_Type)
     ^~~~~~~~~~~~~~~~~
/usr/include/c++/7/ext/type_traits.h:162:26: error: 'nullptr_t' is not a member of 'std'
   __is_null_pointer(std::nullptr_t)
                          ^~~~~~~~~
In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0,
                 from /usr/include/c++/7/exception:142,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/new:120:31: error: declaration of 'operator new' as non-function
 void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc)
                               ^
/usr/include/c++/7/new:120:25: error: 'size_t' is not a member of 'std'
 void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc)
                         ^~~~~~
/usr/include/c++/7/new:120:25: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0,
                 from /usr/include/c++/7/exception:142,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/new:122:33: error: declaration of 'operator new []' as non-function
 void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc)
                                 ^
/usr/include/c++/7/new:122:27: error: 'size_t' is not a member of 'std'
 void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc)
                           ^~~~~~
/usr/include/c++/7/new:122:27: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0,
                 from /usr/include/c++/7/exception:142,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/new:134:25: error: declaration of 'operator new' as non-function
 void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
                         ^~~~~~
/usr/include/c++/7/new:134:25: error: 'size_t' is not a member of 'std'
/usr/include/c++/7/new:134:25: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0,
                 from /usr/include/c++/7/exception:142,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/new:134:33: error: expected primary-expression before 'const'
 void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
                                 ^~~~~
/usr/include/c++/7/new:136:27: error: declaration of 'operator new []' as non-function
 void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
                           ^~~~~~
/usr/include/c++/7/new:136:27: error: 'size_t' is not a member of 'std'
/usr/include/c++/7/new:136:27: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0,
                 from /usr/include/c++/7/exception:142,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/new:136:35: error: expected primary-expression before 'const'
 void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
                                   ^~~~~
/usr/include/c++/7/new:168:32: error: declaration of 'operator new' as non-function
 inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
                                ^~~~~~
/usr/include/c++/7/new:168:32: error: 'size_t' is not a member of 'std'
/usr/include/c++/7/new:168:32: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0,
                 from /usr/include/c++/7/exception:142,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/new:168:40: error: expected primary-expression before 'void'
 inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
                                        ^~~~
/usr/include/c++/7/new:170:34: error: declaration of 'operator new []' as non-function
 inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
                                  ^~~~~~
/usr/include/c++/7/new:170:34: error: 'size_t' is not a member of 'std'
/usr/include/c++/7/new:170:34: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0,
                 from /usr/include/c++/7/exception:142,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/new:170:42: error: expected primary-expression before 'void'
 inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
                                          ^~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:362:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Size>
                               ^~~~~~
/usr/include/c++/7/type_traits:363:25: error: '_Size' was not declared in this scope
     struct is_array<_Tp[_Size]>
                         ^~~~~
/usr/include/c++/7/type_traits:363:31: error: template argument 1 is invalid
     struct is_array<_Tp[_Size]>
                               ^
/usr/include/c++/7/type_traits:561:42: error: 'nullptr_t' is not a member of 'std'
     struct __is_null_pointer_helper<std::nullptr_t>
                                          ^~~~~~~~~
/usr/include/c++/7/type_traits:561:42: note: suggested alternative:
In file included from /usr/include/c++/7/cstddef:50:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:45,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:444:29: note:   'nullptr_t'
   typedef decltype(nullptr) nullptr_t;
                             ^~~~~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:561:42: error: 'nullptr_t' is not a member of 'std'
     struct __is_null_pointer_helper<std::nullptr_t>
                                          ^~~~~~~~~
/usr/include/c++/7/type_traits:561:42: note: suggested alternative:
In file included from /usr/include/c++/7/cstddef:50:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:45,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:444:29: note:   'nullptr_t'
   typedef decltype(nullptr) nullptr_t;
                             ^~~~~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:561:51: error: template argument 1 is invalid
     struct __is_null_pointer_helper<std::nullptr_t>
                                                   ^
/usr/include/c++/7/type_traits:1464:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, __alignof__(_Tp)> { };
                                     ^~~~~~
/usr/include/c++/7/type_traits:1464:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1464:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, __alignof__(_Tp)> { };
                                     ^~~~~~
/usr/include/c++/7/type_traits:1464:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1464:61: error: template argument 1 is invalid
     : public integral_constant<std::size_t, __alignof__(_Tp)> { };
                                                             ^
/usr/include/c++/7/type_traits:1464:61: note: invalid template non-type parameter
/usr/include/c++/7/type_traits:1469:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 0> { };
                                     ^~~~~~
/usr/include/c++/7/type_traits:1469:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1469:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 0> { };
                                     ^~~~~~
/usr/include/c++/7/type_traits:1469:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1469:46: error: template argument 1 is invalid
     : public integral_constant<std::size_t, 0> { };
                                              ^
/usr/include/c++/7/type_traits:1469:46: note: invalid template non-type parameter
/usr/include/c++/7/type_traits:1471:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Size>
                               ^~~~~~
/usr/include/c++/7/type_traits:1472:21: error: '_Size' was not declared in this scope
     struct rank<_Tp[_Size]>
                     ^~~~~
/usr/include/c++/7/type_traits:1472:27: error: template argument 1 is invalid
     struct rank<_Tp[_Size]>
                           ^
/usr/include/c++/7/type_traits:1473:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
                                     ^~~~~~
/usr/include/c++/7/type_traits:1473:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1473:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
                                     ^~~~~~
/usr/include/c++/7/type_traits:1473:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1473:65: error: template argument 1 is invalid
     : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
                                                                 ^
/usr/include/c++/7/type_traits:1473:65: note: invalid template non-type parameter
/usr/include/c++/7/type_traits:1477:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
                                     ^~~~~~
/usr/include/c++/7/type_traits:1477:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1477:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
                                     ^~~~~~
/usr/include/c++/7/type_traits:1477:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1477:65: error: template argument 1 is invalid
     : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
                                                                 ^
/usr/include/c++/7/type_traits:1477:65: note: invalid template non-type parameter
/usr/include/c++/7/type_traits:1482:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 0> { };
                                     ^~~~~~
/usr/include/c++/7/type_traits:1482:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1482:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 0> { };
                                     ^~~~~~
/usr/include/c++/7/type_traits:1482:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1482:46: error: template argument 1 is invalid
     : public integral_constant<std::size_t, 0> { };
                                              ^
/usr/include/c++/7/type_traits:1482:46: note: invalid template non-type parameter
/usr/include/c++/7/type_traits:1484:47: error: 'std::size_t' has not been declared
   template<typename _Tp, unsigned _Uint, std::size_t _Size>
                                               ^~~~~~
/usr/include/c++/7/type_traits:1485:23: error: '_Size' was not declared in this scope
     struct extent<_Tp[_Size], _Uint>
                       ^~~~~
/usr/include/c++/7/type_traits:1485:36: error: template argument 1 is invalid
     struct extent<_Tp[_Size], _Uint>
                                    ^
/usr/include/c++/7/type_traits:1486:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t,
                                     ^~~~~~
/usr/include/c++/7/type_traits:1486:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1486:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t,
                                     ^~~~~~
/usr/include/c++/7/type_traits:1486:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1487:24: error: '_Size' was not declared in this scope
           _Uint == 0 ? _Size : extent<_Tp,
                        ^~~~~
/usr/include/c++/7/type_traits:1488:28: error: template argument 1 is invalid
           _Uint - 1>::value>
                            ^
/usr/include/c++/7/type_traits:1488:28: note: invalid template non-type parameter
/usr/include/c++/7/type_traits:1493:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t,
                                     ^~~~~~
/usr/include/c++/7/type_traits:1493:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1493:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t,
                                     ^~~~~~
/usr/include/c++/7/type_traits:1493:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/bits/move.h:54:0,
                 from /usr/include/c++/7/bits/nested_exception.h:40,
                 from /usr/include/c++/7/exception:143,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/type_traits:1495:31: error: template argument 1 is invalid
              _Uint - 1>::value>
                               ^
/usr/include/c++/7/type_traits:1495:31: note: invalid template non-type parameter
/usr/include/c++/7/type_traits:1944:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Size>
                               ^~~~~~
/usr/include/c++/7/type_traits:1945:30: error: '_Size' was not declared in this scope
     struct remove_extent<_Tp[_Size]>
                              ^~~~~
/usr/include/c++/7/type_traits:1945:36: error: template argument 1 is invalid
     struct remove_extent<_Tp[_Size]>
                                    ^
/usr/include/c++/7/type_traits:1957:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Size>
                               ^~~~~~
/usr/include/c++/7/type_traits:1958:35: error: '_Size' was not declared in this scope
     struct remove_all_extents<_Tp[_Size]>
                                   ^~~~~
/usr/include/c++/7/type_traits:1958:41: error: template argument 1 is invalid
     struct remove_all_extents<_Tp[_Size]>
                                         ^
/usr/include/c++/7/type_traits:2016:17: error: 'std::size_t' has not been declared
   template<std::size_t _Len>
                 ^~~~~~
/usr/include/c++/7/type_traits:2021:23: error: '_Len' was not declared in this scope
  unsigned char __data[_Len];
                       ^~~~
/usr/include/c++/7/type_traits:2021:23: note: suggested alternative: '__yn'
  unsigned char __data[_Len];
                       ^~~~
                       __yn
/usr/include/c++/7/type_traits:2036:17: error: 'std::size_t' has not been declared
   template<std::size_t _Len, std::size_t _Align =
                 ^~~~~~
/usr/include/c++/7/type_traits:2036:35: error: 'std::size_t' has not been declared
   template<std::size_t _Len, std::size_t _Align =
                                   ^~~~~~
/usr/include/c++/7/type_traits:2037:48: error: '_Len' was not declared in this scope
     __alignof__(typename __aligned_storage_msa<_Len>::__type)>
                                                ^~~~
/usr/include/c++/7/type_traits:2037:48: note: suggested alternative: '__yn'
     __alignof__(typename __aligned_storage_msa<_Len>::__type)>
                                                ^~~~
                                                __yn
/usr/include/c++/7/type_traits:2037:52: error: template argument 1 is invalid
     __alignof__(typename __aligned_storage_msa<_Len>::__type)>
                                                    ^
/usr/include/c++/7/type_traits:2042:23: error: '_Len' was not declared in this scope
  unsigned char __data[_Len];
                       ^~~~
/usr/include/c++/7/type_traits:2042:23: note: suggested alternative: '__yn'
  unsigned char __data[_Len];
                       ^~~~
                       __yn
/usr/include/c++/7/type_traits:2043:37: error: '_Align' was not declared in this scope
  struct __attribute__((__aligned__((_Align)))) { } __align;
                                     ^~~~~~
/usr/include/c++/7/type_traits:2043:37: note: suggested alternative: '__logl'
  struct __attribute__((__aligned__((_Align)))) { } __align;
                                     ^~~~~~
                                     __logl
In file included from /usr/include/c++/7/bits/stl_algobase.h:64:0,
                 from /usr/include/c++/7/bits/char_traits.h:39,
                 from /usr/include/c++/7/ios:40,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/stl_pair.h:86:17: error: 'std::size_t' has not been declared
   template<std::size_t...>
                 ^~~~~~
/usr/include/c++/7/bits/stl_pair.h:434:41: error: 'std::size_t' has not been declared
       template<typename... _Args1, std::size_t... _Indexes1,
                                         ^~~~~~
/usr/include/c++/7/bits/stl_pair.h:435:41: error: 'std::size_t' has not been declared
                typename... _Args2, std::size_t... _Indexes2>
                                         ^~~~~~
/usr/include/c++/7/bits/stl_pair.h:437:27: error: '_Indexes1' was not declared in this scope
              _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>);
                           ^~~~~~~~~
/usr/include/c++/7/bits/stl_pair.h:437:36: error: expected parameter pack before '...'
              _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>);
                                    ^~~
/usr/include/c++/7/bits/stl_pair.h:437:39: error: template argument 1 is invalid
              _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>);
                                       ^
/usr/include/c++/7/bits/stl_pair.h:437:55: error: '_Indexes2' was not declared in this scope
              _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>);
                                                       ^~~~~~~~~
/usr/include/c++/7/bits/stl_pair.h:437:64: error: expected parameter pack before '...'
              _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>);
                                                                ^~~
/usr/include/c++/7/bits/stl_pair.h:437:67: error: template argument 1 is invalid
              _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>);
                                                                   ^
In file included from /usr/include/c++/7/ios:40:0,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/char_traits.h:108:66: error: 'std::size_t' has not been declared
       compare(const char_type* __s1, const char_type* __s2, std::size_t __n);
                                                                  ^~~~~~
/usr/include/c++/7/bits/char_traits.h:110:40: error: 'size_t' in namespace 'std' does not name a type
       static _GLIBCXX14_CONSTEXPR std::size_t
                                        ^~~~~~
/usr/include/c++/7/bits/char_traits.h:114:39: error: 'std::size_t' has not been declared
       find(const char_type* __s, std::size_t __n, const char_type& __a);
                                       ^~~~~~
/usr/include/c++/7/bits/char_traits.h:117:57: error: 'std::size_t' has not been declared
       move(char_type* __s1, const char_type* __s2, std::size_t __n);
                                                         ^~~~~~
/usr/include/c++/7/bits/char_traits.h:120:57: error: 'std::size_t' has not been declared
       copy(char_type* __s1, const char_type* __s2, std::size_t __n);
                                                         ^~~~~~
/usr/include/c++/7/bits/char_traits.h:123:35: error: 'std::size_t' has not been declared
       assign(char_type* __s, std::size_t __n, char_type __a);
                                   ^~~~~~
/usr/include/c++/7/bits/char_traits.h:149:64: error: 'std::size_t' has not been declared
     compare(const char_type* __s1, const char_type* __s2, std::size_t __n)
                                                                ^~~~~~
/usr/include/c++/7/bits/char_traits.h: In static member function 'static int __gnu_cxx::char_traits<_CharT>::compare(const char_type*, const char_type*, int)':
/usr/include/c++/7/bits/char_traits.h:151:17: error: 'size_t' is not a member of 'std'
       for (std::size_t __i = 0; __i < __n; ++__i)
                 ^~~~~~
/usr/include/c++/7/bits/char_traits.h:151:17: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/ios:40:0,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/char_traits.h:151:33: error: '__i' was not declared in this scope
       for (std::size_t __i = 0; __i < __n; ++__i)
                                 ^~~
/usr/include/c++/7/bits/char_traits.h:151:33: note: suggested alternative: '__n'
       for (std::size_t __i = 0; __i < __n; ++__i)
                                 ^~~
                                 __n
/usr/include/c++/7/bits/char_traits.h: At global scope:
/usr/include/c++/7/bits/char_traits.h:160:31: error: 'size_t' in namespace 'std' does not name a type
     _GLIBCXX14_CONSTEXPR std::size_t
                               ^~~~~~
/usr/include/c++/7/bits/char_traits.h:173:37: error: 'std::size_t' has not been declared
     find(const char_type* __s, std::size_t __n, const char_type& __a)
                                     ^~~~~~
/usr/include/c++/7/bits/char_traits.h: In static member function 'static const char_type* __gnu_cxx::char_traits<_CharT>::find(const char_type*, int, const char_type&)':
/usr/include/c++/7/bits/char_traits.h:175:17: error: 'size_t' is not a member of 'std'
       for (std::size_t __i = 0; __i < __n; ++__i)
                 ^~~~~~
/usr/include/c++/7/bits/char_traits.h:175:17: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/ios:40:0,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/char_traits.h:175:33: error: '__i' was not declared in this scope
       for (std::size_t __i = 0; __i < __n; ++__i)
                                 ^~~
/usr/include/c++/7/bits/char_traits.h:175:33: note: suggested alternative: '__s'
       for (std::size_t __i = 0; __i < __n; ++__i)
                                 ^~~
                                 __s
/usr/include/c++/7/bits/char_traits.h: At global scope:
/usr/include/c++/7/bits/char_traits.h:184:55: error: 'std::size_t' has not been declared
     move(char_type* __s1, const char_type* __s2, std::size_t __n)
                                                       ^~~~~~
/usr/include/c++/7/bits/char_traits.h:193:55: error: 'std::size_t' has not been declared
     copy(char_type* __s1, const char_type* __s2, std::size_t __n)
                                                       ^~~~~~
/usr/include/c++/7/bits/char_traits.h:203:33: error: 'std::size_t' has not been declared
     assign(char_type* __s, std::size_t __n, char_type __a)
                                 ^~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/7/bits/c++allocator.h:33:0,
                 from /usr/include/c++/7/bits/allocator.h:46,
                 from /usr/include/c++/7/string:41,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/new_allocator.h:44:14: error: 'std::size_t' has not been declared
   using std::size_t;
              ^~~~~~
/usr/include/c++/7/ext/new_allocator.h:45:14: error: 'std::ptrdiff_t' has not been declared
   using std::ptrdiff_t;
              ^~~~~~~~~
In file included from /usr/include/c++/7/ext/alloc_traits.h:36:0,
                 from /usr/include/c++/7/bits/basic_string.h:40,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/alloc_traits.h:404:36: error: 'ptrdiff_t' in namespace 'std' does not name a type
       using difference_type = std::ptrdiff_t;
                                    ^~~~~~~~~
/usr/include/c++/7/bits/alloc_traits.h:407:30: error: 'size_t' in namespace 'std' does not name a type
       using size_type = std::size_t;
                              ^~~~~~
/usr/include/c++/7/bits/alloc_traits.h:435:37: error: 'size_type' has not been declared
       allocate(allocator_type& __a, size_type __n)
                                     ^~~~~~~~~
/usr/include/c++/7/bits/alloc_traits.h:449:37: error: 'size_type' has not been declared
       allocate(allocator_type& __a, size_type __n, const_void_pointer __hint)
                                     ^~~~~~~~~
/usr/include/c++/7/bits/alloc_traits.h:461:52: error: 'size_type' has not been declared
       deallocate(allocator_type& __a, pointer __p, size_type __n)
                                                    ^~~~~~~~~
/usr/include/c++/7/bits/alloc_traits.h:494:14: error: 'size_type' does not name a type; did you mean 'true_type'?
       static size_type
              ^~~~~~~~~
              true_type
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:55:51: error: 'std::size_t' has not been declared
     const char* __name, const _CharT* __str, std::size_t* __idx,
                                                   ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:48: error: 'std::size_t' has not been declared
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
                                                ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:100:31: error: 'std::size_t' has not been declared
      __builtin_va_list), std::size_t __n,
                               ^~~~~~
In file included from /usr/include/c++/7/bits/basic_string.h:40:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/alloc_traits.h: In instantiation of 'struct __gnu_cxx::__alloc_traits<std::allocator<char> >':
/usr/include/c++/7/bits/basic_string.h:80:24:   required from 'class std::__cxx11::basic_string<char>'
/usr/include/c++/7/bits/basic_string.h:6372:68:   required from here
/usr/include/c++/7/ext/alloc_traits.h:61:53: error: no type named 'size_type' in 'struct std::allocator_traits<std::allocator<char> >'
     typedef typename _Base_type::size_type          size_type;
                                                     ^~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:62:53: error: no type named 'difference_type' in 'struct std::allocator_traits<std::allocator<char> >'
     typedef typename _Base_type::difference_type    difference_type;
                                                     ^~~~~~~~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:70:23: error: no members matching '__gnu_cxx::__alloc_traits<std::allocator<char> >::_Base_type {aka std::allocator_traits<std::allocator<char> >}::max_size' in '__gnu_cxx::__alloc_traits<std::allocator<char> >::_Base_type {aka struct std::allocator_traits<std::allocator<char> >}'
     using _Base_type::max_size;
                       ^~~~~~~~
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h: In function 'int std::__cxx11::stoi(const string&, size_t*, int)':
/usr/include/c++/7/bits/basic_string.h:6373:19: error: no matching function for call to '__stoa<long int, int>(long int (*)(const char*, char**, int) throw (), const char [5], const char*, size_t*&, int&)'
      __idx, __base); }
                   ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6373:19: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
      __idx, __base); }
                   ^
/usr/include/c++/7/bits/basic_string.h: In function 'long int std::__cxx11::stol(const string&, size_t*, int)':
/usr/include/c++/7/bits/basic_string.h:6378:22: error: no matching function for call to '__stoa(long int (*)(const char*, char**, int) throw (), const char [5], const char*, size_t*&, int&)'
         __idx, __base); }
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6378:22: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
         __idx, __base); }
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'long unsigned int std::__cxx11::stoul(const string&, size_t*, int)':
/usr/include/c++/7/bits/basic_string.h:6383:22: error: no matching function for call to '__stoa(long unsigned int (*)(const char*, char**, int) throw (), const char [6], const char*, size_t*&, int&)'
         __idx, __base); }
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6383:22: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
         __idx, __base); }
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'long long int std::__cxx11::stoll(const string&, size_t*, int)':
/usr/include/c++/7/bits/basic_string.h:6388:22: error: no matching function for call to '__stoa(long long int (*)(const char*, char**, int) throw (), const char [6], const char*, size_t*&, int&)'
         __idx, __base); }
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6388:22: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
         __idx, __base); }
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'long long unsigned int std::__cxx11::stoull(const string&, size_t*, int)':
/usr/include/c++/7/bits/basic_string.h:6393:22: error: no matching function for call to '__stoa(long long unsigned int (*)(const char*, char**, int) throw (), const char [7], const char*, size_t*&, int&)'
         __idx, __base); }
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6393:22: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
         __idx, __base); }
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'float std::__cxx11::stof(const string&, size_t*)':
/usr/include/c++/7/bits/basic_string.h:6398:72: error: no matching function for call to '__stoa(float (*)(const char*, char**) throw (), const char [5], const char*, size_t*&)'
   { return __gnu_cxx::__stoa(&std::strtof, "stof", __str.c_str(), __idx); }
                                                                        ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6398:72: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
   { return __gnu_cxx::__stoa(&std::strtof, "stof", __str.c_str(), __idx); }
                                                                        ^
/usr/include/c++/7/bits/basic_string.h: In function 'double std::__cxx11::stod(const string&, size_t*)':
/usr/include/c++/7/bits/basic_string.h:6402:72: error: no matching function for call to '__stoa(double (*)(const char*, char**) throw (), const char [5], const char*, size_t*&)'
   { return __gnu_cxx::__stoa(&std::strtod, "stod", __str.c_str(), __idx); }
                                                                        ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6402:72: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
   { return __gnu_cxx::__stoa(&std::strtod, "stod", __str.c_str(), __idx); }
                                                                        ^
/usr/include/c++/7/bits/basic_string.h: In function 'long double std::__cxx11::stold(const string&, size_t*)':
/usr/include/c++/7/bits/basic_string.h:6406:74: error: no matching function for call to '__stoa(long double (*)(const char*, char**) throw (), const char [6], const char*, size_t*&)'
   { return __gnu_cxx::__stoa(&std::strtold, "stold", __str.c_str(), __idx); }
                                                                          ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6406:74: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
   { return __gnu_cxx::__stoa(&std::strtold, "stold", __str.c_str(), __idx); }
                                                                          ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::string std::__cxx11::to_string(int)':
/usr/include/c++/7/bits/basic_string.h:6416:20: error: no matching function for call to '__to_xstring<std::__cxx11::string>(int (*)(char*, size_t, const char*, __va_list_tag*) throw (), long unsigned int, const char [3], int&)'
         "%d", __val); }
                    ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6416:20: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
         "%d", __val); }
                    ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::string std::__cxx11::to_string(unsigned int)':
/usr/include/c++/7/bits/basic_string.h:6422:20: error: no matching function for call to '__to_xstring<std::__cxx11::string>(int (*)(char*, size_t, const char*, __va_list_tag*) throw (), long unsigned int, const char [3], unsigned int&)'
         "%u", __val); }
                    ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6422:20: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
         "%u", __val); }
                    ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::string std::__cxx11::to_string(long int)':
/usr/include/c++/7/bits/basic_string.h:6427:21: error: no matching function for call to '__to_xstring<std::__cxx11::string>(int (*)(char*, size_t, const char*, __va_list_tag*) throw (), long unsigned int, const char [4], long int&)'
         "%ld", __val); }
                     ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6427:21: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
         "%ld", __val); }
                     ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::string std::__cxx11::to_string(long unsigned int)':
/usr/include/c++/7/bits/basic_string.h:6433:21: error: no matching function for call to '__to_xstring<std::__cxx11::string>(int (*)(char*, size_t, const char*, __va_list_tag*) throw (), long unsigned int, const char [4], long unsigned int&)'
         "%lu", __val); }
                     ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6433:21: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
         "%lu", __val); }
                     ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::string std::__cxx11::to_string(long long int)':
/usr/include/c++/7/bits/basic_string.h:6439:22: error: no matching function for call to '__to_xstring<std::__cxx11::string>(int (*)(char*, size_t, const char*, __va_list_tag*) throw (), long unsigned int, const char [5], long long int&)'
         "%lld", __val); }
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6439:22: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
         "%lld", __val); }
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::string std::__cxx11::to_string(long long unsigned int)':
/usr/include/c++/7/bits/basic_string.h:6445:22: error: no matching function for call to '__to_xstring<std::__cxx11::string>(int (*)(char*, size_t, const char*, __va_list_tag*) throw (), long unsigned int, const char [5], long long unsigned int&)'
         "%llu", __val); }
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6445:22: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
         "%llu", __val); }
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::string std::__cxx11::to_string(float)':
/usr/include/c++/7/bits/basic_string.h:6453:20: error: no matching function for call to '__to_xstring<std::__cxx11::string>(int (*)(char*, size_t, const char*, __va_list_tag*) throw (), const int&, const char [3], float&)'
         "%f", __val);
                    ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6453:20: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
         "%f", __val);
                    ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::string std::__cxx11::to_string(double)':
/usr/include/c++/7/bits/basic_string.h:6462:20: error: no matching function for call to '__to_xstring<std::__cxx11::string>(int (*)(char*, size_t, const char*, __va_list_tag*) throw (), const int&, const char [3], double&)'
         "%f", __val);
                    ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6462:20: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
         "%f", __val);
                    ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::string std::__cxx11::to_string(long double)':
/usr/include/c++/7/bits/basic_string.h:6471:21: error: no matching function for call to '__to_xstring<std::__cxx11::string>(int (*)(char*, size_t, const char*, __va_list_tag*) throw (), const int&, const char [4], long double&)'
         "%Lf", __val);
                     ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6471:21: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
         "%Lf", __val);
                     ^
In file included from /usr/include/c++/7/bits/basic_string.h:40:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/alloc_traits.h: In instantiation of 'struct __gnu_cxx::__alloc_traits<std::allocator<wchar_t> >':
/usr/include/c++/7/bits/basic_string.h:80:24:   required from 'class std::__cxx11::basic_string<wchar_t>'
/usr/include/c++/7/bits/basic_string.h:6478:68:   required from here
/usr/include/c++/7/ext/alloc_traits.h:61:53: error: no type named 'size_type' in 'struct std::allocator_traits<std::allocator<wchar_t> >'
     typedef typename _Base_type::size_type          size_type;
                                                     ^~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:62:53: error: no type named 'difference_type' in 'struct std::allocator_traits<std::allocator<wchar_t> >'
     typedef typename _Base_type::difference_type    difference_type;
                                                     ^~~~~~~~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:70:23: error: no members matching '__gnu_cxx::__alloc_traits<std::allocator<wchar_t> >::_Base_type {aka std::allocator_traits<std::allocator<wchar_t> >}::max_size' in '__gnu_cxx::__alloc_traits<std::allocator<wchar_t> >::_Base_type {aka struct std::allocator_traits<std::allocator<wchar_t> >}'
     using _Base_type::max_size;
                       ^~~~~~~~
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h: In function 'int std::__cxx11::stoi(const wstring&, size_t*, int)':
/usr/include/c++/7/bits/basic_string.h:6479:19: error: no matching function for call to '__stoa<long int, int>(long int (*)(const wchar_t*, wchar_t**, int) throw (), const char [5], const wchar_t*, size_t*&, int&)'
      __idx, __base); }
                   ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6479:19: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
      __idx, __base); }
                   ^
/usr/include/c++/7/bits/basic_string.h: In function 'long int std::__cxx11::stol(const wstring&, size_t*, int)':
/usr/include/c++/7/bits/basic_string.h:6484:22: error: no matching function for call to '__stoa(long int (*)(const wchar_t*, wchar_t**, int) throw (), const char [5], const wchar_t*, size_t*&, int&)'
         __idx, __base); }
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6484:22: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
         __idx, __base); }
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'long unsigned int std::__cxx11::stoul(const wstring&, size_t*, int)':
/usr/include/c++/7/bits/basic_string.h:6489:22: error: no matching function for call to '__stoa(long unsigned int (*)(const wchar_t*, wchar_t**, int) throw (), const char [6], const wchar_t*, size_t*&, int&)'
         __idx, __base); }
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6489:22: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
         __idx, __base); }
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'long long int std::__cxx11::stoll(const wstring&, size_t*, int)':
/usr/include/c++/7/bits/basic_string.h:6494:22: error: no matching function for call to '__stoa(long long int (*)(const wchar_t*, wchar_t**, int) throw (), const char [6], const wchar_t*, size_t*&, int&)'
         __idx, __base); }
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6494:22: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
         __idx, __base); }
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'long long unsigned int std::__cxx11::stoull(const wstring&, size_t*, int)':
/usr/include/c++/7/bits/basic_string.h:6499:22: error: no matching function for call to '__stoa(long long unsigned int (*)(const wchar_t*, wchar_t**, int) throw (), const char [7], const wchar_t*, size_t*&, int&)'
         __idx, __base); }
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6499:22: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
         __idx, __base); }
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'float std::__cxx11::stof(const wstring&, size_t*)':
/usr/include/c++/7/bits/basic_string.h:6504:72: error: no matching function for call to '__stoa(float (*)(const wchar_t*, wchar_t**) throw (), const char [5], const wchar_t*, size_t*&)'
   { return __gnu_cxx::__stoa(&std::wcstof, "stof", __str.c_str(), __idx); }
                                                                        ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6504:72: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
   { return __gnu_cxx::__stoa(&std::wcstof, "stof", __str.c_str(), __idx); }
                                                                        ^
/usr/include/c++/7/bits/basic_string.h: In function 'double std::__cxx11::stod(const wstring&, size_t*)':
/usr/include/c++/7/bits/basic_string.h:6508:72: error: no matching function for call to '__stoa(double (*)(const wchar_t*, wchar_t**) throw (), const char [5], const wchar_t*, size_t*&)'
   { return __gnu_cxx::__stoa(&std::wcstod, "stod", __str.c_str(), __idx); }
                                                                        ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6508:72: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
   { return __gnu_cxx::__stoa(&std::wcstod, "stod", __str.c_str(), __idx); }
                                                                        ^
/usr/include/c++/7/bits/basic_string.h: In function 'long double std::__cxx11::stold(const wstring&, size_t*)':
/usr/include/c++/7/bits/basic_string.h:6512:74: error: no matching function for call to '__stoa(long double (*)(const wchar_t*, wchar_t**) throw (), const char [6], const wchar_t*, size_t*&)'
   { return __gnu_cxx::__stoa(&std::wcstold, "stold", __str.c_str(), __idx); }
                                                                          ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:54:5: note: candidate: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^~~~~~
/usr/include/c++/7/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6512:74: note:   cannot convert '__idx' (type 'size_t* {aka long unsigned int*}') to type 'int*'
   { return __gnu_cxx::__stoa(&std::wcstold, "stold", __str.c_str(), __idx); }
                                                                          ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::wstring std::__cxx11::to_wstring(int)':
/usr/include/c++/7/bits/basic_string.h:6519:22: error: no matching function for call to '__to_xstring<std::__cxx11::wstring>(int (*)(wchar_t*, size_t, const wchar_t*, __va_list_tag*) throw (), long unsigned int, const wchar_t [3], int&)'
          L"%d", __val); }
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6519:22: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
          L"%d", __val); }
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)':
/usr/include/c++/7/bits/basic_string.h:6525:22: error: no matching function for call to '__to_xstring<std::__cxx11::wstring>(int (*)(wchar_t*, size_t, const wchar_t*, __va_list_tag*) throw (), long unsigned int, const wchar_t [3], unsigned int&)'
          L"%u", __val); }
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6525:22: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
          L"%u", __val); }
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::wstring std::__cxx11::to_wstring(long int)':
/usr/include/c++/7/bits/basic_string.h:6530:23: error: no matching function for call to '__to_xstring<std::__cxx11::wstring>(int (*)(wchar_t*, size_t, const wchar_t*, __va_list_tag*) throw (), long unsigned int, const wchar_t [4], long int&)'
          L"%ld", __val); }
                       ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6530:23: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
          L"%ld", __val); }
                       ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)':
/usr/include/c++/7/bits/basic_string.h:6536:23: error: no matching function for call to '__to_xstring<std::__cxx11::wstring>(int (*)(wchar_t*, size_t, const wchar_t*, __va_list_tag*) throw (), long unsigned int, const wchar_t [4], long unsigned int&)'
          L"%lu", __val); }
                       ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6536:23: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
          L"%lu", __val); }
                       ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::wstring std::__cxx11::to_wstring(long long int)':
/usr/include/c++/7/bits/basic_string.h:6542:24: error: no matching function for call to '__to_xstring<std::__cxx11::wstring>(int (*)(wchar_t*, size_t, const wchar_t*, __va_list_tag*) throw (), long unsigned int, const wchar_t [5], long long int&)'
          L"%lld", __val); }
                        ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6542:24: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
          L"%lld", __val); }
                        ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)':
/usr/include/c++/7/bits/basic_string.h:6548:24: error: no matching function for call to '__to_xstring<std::__cxx11::wstring>(int (*)(wchar_t*, size_t, const wchar_t*, __va_list_tag*) throw (), long unsigned int, const wchar_t [5], long long unsigned int&)'
          L"%llu", __val); }
                        ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6548:24: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
          L"%llu", __val); }
                        ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::wstring std::__cxx11::to_wstring(float)':
/usr/include/c++/7/bits/basic_string.h:6556:22: error: no matching function for call to '__to_xstring<std::__cxx11::wstring>(int (*)(wchar_t*, size_t, const wchar_t*, __va_list_tag*) throw (), const int&, const wchar_t [3], float&)'
          L"%f", __val);
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6556:22: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
          L"%f", __val);
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::wstring std::__cxx11::to_wstring(double)':
/usr/include/c++/7/bits/basic_string.h:6565:22: error: no matching function for call to '__to_xstring<std::__cxx11::wstring>(int (*)(wchar_t*, size_t, const wchar_t*, __va_list_tag*) throw (), const int&, const wchar_t [3], double&)'
          L"%f", __val);
                      ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6565:22: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
          L"%f", __val);
                      ^
/usr/include/c++/7/bits/basic_string.h: In function 'std::__cxx11::wstring std::__cxx11::to_wstring(long double)':
/usr/include/c++/7/bits/basic_string.h:6574:23: error: no matching function for call to '__to_xstring<std::__cxx11::wstring>(int (*)(wchar_t*, size_t, const wchar_t*, __va_list_tag*) throw (), const int&, const wchar_t [4], long double&)'
          L"%Lf", __val);
                       ^
In file included from /usr/include/c++/7/bits/basic_string.h:6361:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/string_conversions.h:99:5: note: candidate: template<class _String, class _CharT> _String __gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*, __va_list_tag*), int, const _CharT*, ...)
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
     ^~~~~~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:99:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h:6574:23: note:   mismatched types 'int' and 'size_t {aka long unsigned int}'
          L"%Lf", __val);
                       ^
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h: In member function 'size_t std::hash<std::__cxx11::basic_string<char> >::operator()(const string&) const':
/usr/include/c++/7/bits/basic_string.h:6603:54: error: 'const string {aka const class std::__cxx11::basic_string<char>}' has no member named 'length'
       { return std::_Hash_impl::hash(__s.data(), __s.length()); }
                                                      ^~~~~~
/usr/include/c++/7/bits/basic_string.h: In member function 'size_t std::hash<std::__cxx11::basic_string<wchar_t> >::operator()(const wstring&) const':
/usr/include/c++/7/bits/basic_string.h:6619:42: error: 'const wstring {aka const class std::__cxx11::basic_string<wchar_t>}' has no member named 'length'
                                      __s.length() * sizeof(wchar_t)); }
                                          ^~~~~~
In file included from /usr/include/c++/7/bits/basic_string.h:40:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/alloc_traits.h: In instantiation of 'struct __gnu_cxx::__alloc_traits<std::allocator<char16_t> >':
/usr/include/c++/7/bits/basic_string.h:80:24:   required from 'class std::__cxx11::basic_string<char16_t>'
/usr/include/c++/7/bits/basic_string.h:6636:41:   required from here
/usr/include/c++/7/ext/alloc_traits.h:61:53: error: no type named 'size_type' in 'struct std::allocator_traits<std::allocator<char16_t> >'
     typedef typename _Base_type::size_type          size_type;
                                                     ^~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:62:53: error: no type named 'difference_type' in 'struct std::allocator_traits<std::allocator<char16_t> >'
     typedef typename _Base_type::difference_type    difference_type;
                                                     ^~~~~~~~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:70:23: error: no members matching '__gnu_cxx::__alloc_traits<std::allocator<char16_t> >::_Base_type {aka std::allocator_traits<std::allocator<char16_t> >}::max_size' in '__gnu_cxx::__alloc_traits<std::allocator<char16_t> >::_Base_type {aka struct std::allocator_traits<std::allocator<char16_t> >}'
     using _Base_type::max_size;
                       ^~~~~~~~
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h: In member function 'size_t std::hash<std::__cxx11::basic_string<char16_t> >::operator()(const u16string&) const':
/usr/include/c++/7/bits/basic_string.h:6637:42: error: 'const u16string {aka const class std::__cxx11::basic_string<char16_t>}' has no member named 'length'
                                      __s.length() * sizeof(char16_t)); }
                                          ^~~~~~
In file included from /usr/include/c++/7/bits/basic_string.h:40:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/alloc_traits.h: In instantiation of 'struct __gnu_cxx::__alloc_traits<std::allocator<char32_t> >':
/usr/include/c++/7/bits/basic_string.h:80:24:   required from 'class std::__cxx11::basic_string<char32_t>'
/usr/include/c++/7/bits/basic_string.h:6651:41:   required from here
/usr/include/c++/7/ext/alloc_traits.h:61:53: error: no type named 'size_type' in 'struct std::allocator_traits<std::allocator<char32_t> >'
     typedef typename _Base_type::size_type          size_type;
                                                     ^~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:62:53: error: no type named 'difference_type' in 'struct std::allocator_traits<std::allocator<char32_t> >'
     typedef typename _Base_type::difference_type    difference_type;
                                                     ^~~~~~~~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:70:23: error: no members matching '__gnu_cxx::__alloc_traits<std::allocator<char32_t> >::_Base_type {aka std::allocator_traits<std::allocator<char32_t> >}::max_size' in '__gnu_cxx::__alloc_traits<std::allocator<char32_t> >::_Base_type {aka struct std::allocator_traits<std::allocator<char32_t> >}'
     using _Base_type::max_size;
                       ^~~~~~~~
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h: In member function 'size_t std::hash<std::__cxx11::basic_string<char32_t> >::operator()(const u32string&) const':
/usr/include/c++/7/bits/basic_string.h:6652:42: error: 'const u32string {aka const class std::__cxx11::basic_string<char32_t>}' has no member named 'length'
                                      __s.length() * sizeof(char32_t)); }
                                          ^~~~~~
In file included from /usr/include/c++/7/bits/locale_facets.h:2651:0,
                 from /usr/include/c++/7/bits/basic_ios.h:37,
                 from /usr/include/c++/7/ios:44,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/locale_facets.tcc: In member function 'void std::__numpunct_cache<_CharT>::_M_cache(const std::locale&)':
/usr/include/c++/7/bits/locale_facets.tcc:88:27: error: 'const string {aka const class std::__cxx11::basic_string<char>}' has no member named 'size'
    _M_grouping_size = __g.size();
                           ^~~~
/usr/include/c++/7/bits/locale_facets.tcc:90:8: error: 'const string {aka const class std::__cxx11::basic_string<char>}' has no member named 'copy'
    __g.copy(__grouping, _M_grouping_size);
        ^~~~
/usr/include/c++/7/bits/locale_facets.tcc: In member function '_InIter std::num_get<_CharT, _InIter>::_M_extract_float(_InIter, _InIter, std::ios_base&, std::ios_base::iostate&, std::__cxx11::string&) const':
/usr/include/c++/7/bits/locale_facets.tcc:211:19: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'reserve'
  __found_grouping.reserve(32);
                   ^~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:296:28: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'size'
       if (__found_grouping.size())
                            ^~~~
/usr/include/c++/7/bits/locale_facets.tcc:319:28: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'size'
       if (__found_grouping.size() && !__found_dec)
                            ^~~~
/usr/include/c++/7/bits/locale_facets.tcc:355:28: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'size'
       if (__found_grouping.size())
                            ^~~~
/usr/include/c++/7/bits/locale_facets.tcc: In member function '_InIter std::num_get<_CharT, _InIter>::_M_extract_int(_InIter, _InIter, std::ios_base&, std::ios_base::iostate&, _ValueT&) const':
/usr/include/c++/7/bits/locale_facets.tcc:468:21: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'reserve'
    __found_grouping.reserve(32);
                     ^~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:554:23: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'size'
  if (__found_grouping.size())
                       ^~~~
/usr/include/c++/7/bits/locale_facets.tcc:567:56: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'size'
  if ((!__sep_pos && !__found_zero && !__found_grouping.size())
                                                        ^~~~
/usr/include/c++/7/bits/locale_facets.tcc: In member function 'virtual _InIter std::num_get<_CharT, _InIter>::do_get(std::num_get<_CharT, _InIter>::iter_type, std::num_get<_CharT, _InIter>::iter_type, std::ios_base&, std::ios_base::iostate&, float&) const':
/usr/include/c++/7/bits/locale_facets.tcc:695:14: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'reserve'
       __xtrc.reserve(32);
              ^~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc: In member function 'virtual _InIter std::num_get<_CharT, _InIter>::do_get(std::num_get<_CharT, _InIter>::iter_type, std::num_get<_CharT, _InIter>::iter_type, std::ios_base&, std::ios_base::iostate&, double&) const':
/usr/include/c++/7/bits/locale_facets.tcc:710:14: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'reserve'
       __xtrc.reserve(32);
              ^~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc: In member function 'virtual _InIter std::num_get<_CharT, _InIter>::do_get(std::num_get<_CharT, _InIter>::iter_type, std::num_get<_CharT, _InIter>::iter_type, std::ios_base&, std::ios_base::iostate&, long double&) const':
/usr/include/c++/7/bits/locale_facets.tcc:742:14: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'reserve'
       __xtrc.reserve(32);
              ^~~~~~~
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility: At global scope:
/usr/include/c++/7/utility:128:17: error: 'std::size_t' has not been declared
   template<std::size_t __i, typename _Tp>
                 ^~~~~~
/usr/include/c++/7/utility:129:12: error: no default argument for '_Tp'
     struct tuple_element;
            ^~~~~~~~~~~~~
/usr/include/c++/7/utility:132:17: error: 'std::size_t' has not been declared
   template<std::size_t __i, typename _Tp>
                 ^~~~~~
/usr/include/c++/7/utility:133:54: error: '__i' was not declared in this scope
     using __tuple_element_t = typename tuple_element<__i, _Tp>::type;
                                                      ^~~
/usr/include/c++/7/utility:133:54: note: suggested alternative: '__N'
     using __tuple_element_t = typename tuple_element<__i, _Tp>::type;
                                                      ^~~
                                                      __N
/usr/include/c++/7/utility:133:62: error: template argument 1 is invalid
     using __tuple_element_t = typename tuple_element<__i, _Tp>::type;
                                                              ^
/usr/include/c++/7/utility:135:17: error: 'std::size_t' has not been declared
   template<std::size_t __i, typename _Tp>
                 ^~~~~~
/usr/include/c++/7/utility:136:26: error: '__i' was not declared in this scope
     struct tuple_element<__i, const _Tp>
                          ^~~
/usr/include/c++/7/utility:136:26: note: suggested alternative: '__N'
     struct tuple_element<__i, const _Tp>
                          ^~~
                          __N
/usr/include/c++/7/utility:136:40: error: template argument 1 is invalid
     struct tuple_element<__i, const _Tp>
                                        ^
/usr/include/c++/7/utility:141:17: error: 'std::size_t' has not been declared
   template<std::size_t __i, typename _Tp>
                 ^~~~~~
/usr/include/c++/7/utility:142:26: error: '__i' was not declared in this scope
     struct tuple_element<__i, volatile _Tp>
                          ^~~
/usr/include/c++/7/utility:142:26: note: suggested alternative: '__N'
     struct tuple_element<__i, volatile _Tp>
                          ^~~
                          __N
/usr/include/c++/7/utility:142:43: error: template argument 1 is invalid
     struct tuple_element<__i, volatile _Tp>
                                           ^
/usr/include/c++/7/utility:147:17: error: 'std::size_t' has not been declared
   template<std::size_t __i, typename _Tp>
                 ^~~~~~
/usr/include/c++/7/utility:148:26: error: '__i' was not declared in this scope
     struct tuple_element<__i, const volatile _Tp>
                          ^~~
/usr/include/c++/7/utility:148:26: note: suggested alternative: '__N'
     struct tuple_element<__i, const volatile _Tp>
                          ^~~
                          __N
/usr/include/c++/7/utility:148:49: error: template argument 1 is invalid
     struct tuple_element<__i, const volatile _Tp>
                                                 ^
/usr/include/c++/7/utility:170:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 2> { };
                                     ^~~~~~
/usr/include/c++/7/utility:170:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility:170:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 2> { };
                                     ^~~~~~
/usr/include/c++/7/utility:170:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility:170:46: error: template argument 1 is invalid
     : public integral_constant<std::size_t, 2> { };
                                              ^
/usr/include/c++/7/utility:170:46: note: invalid template non-type parameter
/usr/include/c++/7/utility:182:17: error: 'std::size_t' has not been declared
   template<std::size_t _Int>
                 ^~~~~~
/usr/include/c++/7/utility:223:17: error: 'std::size_t' has not been declared
   template<std::size_t _Int, class _Tp1, class _Tp2>
                 ^~~~~~
/usr/include/c++/7/utility:224:38: error: '_Int' was not declared in this scope
     constexpr typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&
                                      ^~~~
/usr/include/c++/7/utility:224:38: note: suggested alternative: 'rint'
     constexpr typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&
                                      ^~~~
                                      rint
/usr/include/c++/7/utility:224:64: error: template argument 1 is invalid
     constexpr typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&
                                                                ^~
/usr/include/c++/7/utility: In function 'constexpr int& std::get(std::pair<_Tp1, _Tp2>&)':
/usr/include/c++/7/utility:226:25: error: '_Int' was not declared in this scope
     { return __pair_get<_Int>::__get(__in); }
                         ^~~~
/usr/include/c++/7/utility:226:25: note: suggested alternative: 'rint'
     { return __pair_get<_Int>::__get(__in); }
                         ^~~~
                         rint
/usr/include/c++/7/utility:226:29: error: template argument 1 is invalid
     { return __pair_get<_Int>::__get(__in); }
                             ^
/usr/include/c++/7/utility: At global scope:
/usr/include/c++/7/utility:228:17: error: 'std::size_t' has not been declared
   template<std::size_t _Int, class _Tp1, class _Tp2>
                 ^~~~~~
/usr/include/c++/7/utility:229:38: error: '_Int' was not declared in this scope
     constexpr typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&&
                                      ^~~~
/usr/include/c++/7/utility:229:38: note: suggested alternative: 'rint'
     constexpr typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&&
                                      ^~~~
                                      rint
/usr/include/c++/7/utility:229:64: error: template argument 1 is invalid
     constexpr typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&&
                                                                ^~
/usr/include/c++/7/utility: In function 'constexpr int&& std::get(std::pair<_Tp1, _Tp2>&&)':
/usr/include/c++/7/utility:231:25: error: '_Int' was not declared in this scope
     { return __pair_get<_Int>::__move_get(std::move(__in)); }
                         ^~~~
/usr/include/c++/7/utility:231:25: note: suggested alternative: 'rint'
     { return __pair_get<_Int>::__move_get(std::move(__in)); }
                         ^~~~
                         rint
/usr/include/c++/7/utility:231:29: error: template argument 1 is invalid
     { return __pair_get<_Int>::__move_get(std::move(__in)); }
                             ^
/usr/include/c++/7/utility: At global scope:
/usr/include/c++/7/utility:233:17: error: 'std::size_t' has not been declared
   template<std::size_t _Int, class _Tp1, class _Tp2>
                 ^~~~~~
/usr/include/c++/7/utility:234:44: error: '_Int' was not declared in this scope
     constexpr const typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&
                                            ^~~~
/usr/include/c++/7/utility:234:44: note: suggested alternative: 'rint'
     constexpr const typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&
                                            ^~~~
                                            rint
/usr/include/c++/7/utility:234:70: error: template argument 1 is invalid
     constexpr const typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&
                                                                      ^~
/usr/include/c++/7/utility: In function 'constexpr const int& std::get(const std::pair<_Tp1, _Tp2>&)':
/usr/include/c++/7/utility:236:25: error: '_Int' was not declared in this scope
     { return __pair_get<_Int>::__const_get(__in); }
                         ^~~~
/usr/include/c++/7/utility:236:25: note: suggested alternative: 'rint'
     { return __pair_get<_Int>::__const_get(__in); }
                         ^~~~
                         rint
/usr/include/c++/7/utility:236:29: error: template argument 1 is invalid
     { return __pair_get<_Int>::__const_get(__in); }
                             ^
/usr/include/c++/7/utility: At global scope:
/usr/include/c++/7/utility:289:43: note: invalid template non-type parameter
     struct _Itup_cat<_Index_tuple<_Ind1...>, _Index_tuple<_Ind2...>>
                                           ^
/usr/include/c++/7/utility:289:64: note: invalid template non-type parameter
     struct _Itup_cat<_Index_tuple<_Ind1...>, _Index_tuple<_Ind2...>>
                                                                ^~~
/usr/include/c++/7/utility:289:67: error: template argument 1 is invalid
     struct _Itup_cat<_Index_tuple<_Ind1...>, _Index_tuple<_Ind2...>>
                                                                   ^~
/usr/include/c++/7/utility:289:67: error: template argument 2 is invalid
/usr/include/c++/7/utility:304:29: note: invalid template non-type parameter
       typedef _Index_tuple<0> __type;
                             ^
In file included from /usr/include/c++/7/bits/stl_algo.h:62:0,
                 from /usr/include/c++/7/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/bits/stl_tempbuf.h: In function 'std::pair<_Tp*, long int> std::get_temporary_buffer(ptrdiff_t)':
/usr/include/c++/7/bits/stl_tempbuf.h:95:20: error: too many arguments to function 'void* operator new(long unsigned int)'
        std::nothrow));
                    ^
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array: At global scope:
/usr/include/c++/7/array:47:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Nm>
                               ^~~~~~
/usr/include/c++/7/array:50:25: error: '_Nm' was not declared in this scope
       typedef _Tp _Type[_Nm];
                         ^~~
/usr/include/c++/7/array:55:20: error: '_Type' does not name a type; did you mean '_Tp'?
       _S_ref(const _Type& __t, std::size_t __n) noexcept
                    ^~~~~
                    _Tp
/usr/include/c++/7/array:55:37: error: 'std::size_t' has not been declared
       _S_ref(const _Type& __t, std::size_t __n) noexcept
                                     ^~~~~~
/usr/include/c++/7/array:59:20: error: '_Type' does not name a type; did you mean '_Tp'?
       _S_ptr(const _Type& __t) noexcept
                    ^~~~~
                    _Tp
/usr/include/c++/7/array: In static member function 'static constexpr _Tp& std::__array_traits<_Tp, <declaration error> >::_S_ref(const int&, int)':
/usr/include/c++/7/array:56:40: error: invalid types 'const int[int]' for array subscript
       { return const_cast<_Tp&>(__t[__n]); }
                                        ^
/usr/include/c++/7/array: At global scope:
/usr/include/c++/7/array:93:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Nm>
                               ^~~~~~
/usr/include/c++/7/array:103:20: error: 'size_t' in namespace 'std' does not name a type
       typedef std::size_t                           size_type;
                    ^~~~~~
/usr/include/c++/7/array:104:20: error: 'ptrdiff_t' in namespace 'std' does not name a type
       typedef std::ptrdiff_t                          difference_type;
                    ^~~~~~~~~
/usr/include/c++/7/array:109:51: error: '_Nm' was not declared in this scope
       typedef _GLIBCXX_STD_C::__array_traits<_Tp, _Nm> _AT_Type;
                                                   ^~~
/usr/include/c++/7/array:109:54: error: template argument 2 is invalid
       typedef _GLIBCXX_STD_C::__array_traits<_Tp, _Nm> _AT_Type;
                                                      ^
/usr/include/c++/7/array:110:16: error: '_AT_Type' is not a class, namespace, or enumeration
       typename _AT_Type::_Type                         _M_elems;
                ^~~~~~~~
/usr/include/c++/7/array:121:16: error: '_AT_Type' is not a class, namespace, or enumeration
       noexcept(_AT_Type::_Is_nothrow_swappable::value)
                ^~~~~~~~
/usr/include/c++/7/array:174:17: error: 'size_type' does not name a type; did you mean 'true_type'?
       constexpr size_type
                 ^~~~~~~~~
                 true_type
/usr/include/c++/7/array:177:17: error: 'size_type' does not name a type; did you mean 'true_type'?
       constexpr size_type
                 ^~~~~~~~~
                 true_type
/usr/include/c++/7/array:185:18: error: 'size_type' has not been declared
       operator[](size_type __n) noexcept
                  ^~~~~~~~~
/usr/include/c++/7/array:189:18: error: 'size_type' has not been declared
       operator[](size_type __n) const noexcept
                  ^~~~~~~~~
/usr/include/c++/7/array:193:10: error: 'size_type' has not been declared
       at(size_type __n)
          ^~~~~~~~~
/usr/include/c++/7/array:203:10: error: 'size_type' has not been declared
       at(size_type __n) const
          ^~~~~~~~~
/usr/include/c++/7/array: In member function 'void std::array<_Tp, <declaration error> >::fill(const value_type&)':
/usr/include/c++/7/array:117:30: error: there are no arguments to 'size' that depend on a template parameter, so a declaration of 'size' must be available [-fpermissive]
       { std::fill_n(begin(), size(), __u); }
                              ^~~~
/usr/include/c++/7/array:117:30: note: (if you use '-fpermissive', G++ will accept your code, but allowing the use of an undeclared name is deprecated)
/usr/include/c++/7/array: In member function 'std::array<_Tp, <declaration error> >::value_type* std::array<_Tp, <declaration error> >::end()':
/usr/include/c++/7/array:135:34: error: '_Nm' was not declared in this scope
       { return iterator(data() + _Nm); }
                                  ^~~
/usr/include/c++/7/array: In member function 'const value_type* std::array<_Tp, <declaration error> >::end() const':
/usr/include/c++/7/array:139:40: error: '_Nm' was not declared in this scope
       { return const_iterator(data() + _Nm); }
                                        ^~~
/usr/include/c++/7/array: In member function 'const value_type* std::array<_Tp, <declaration error> >::cend() const':
/usr/include/c++/7/array:163:40: error: '_Nm' was not declared in this scope
       { return const_iterator(data() + _Nm); }
                                        ^~~
/usr/include/c++/7/array: In member function 'constexpr bool std::array<_Tp, <declaration error> >::empty() const':
/usr/include/c++/7/array:181:39: error: there are no arguments to 'size' that depend on a template parameter, so a declaration of 'size' must be available [-fpermissive]
       empty() const noexcept { return size() == 0; }
                                       ^~~~
/usr/include/c++/7/array: In member function 'std::array<_Tp, <declaration error> >::value_type& std::array<_Tp, <declaration error> >::operator[](int)':
/usr/include/c++/7/array:186:16: error: '_AT_Type' is not a class, namespace, or enumeration
       { return _AT_Type::_S_ref(_M_elems, __n); }
                ^~~~~~~~
/usr/include/c++/7/array: In member function 'constexpr const value_type& std::array<_Tp, <declaration error> >::operator[](int) const':
/usr/include/c++/7/array:190:16: error: '_AT_Type' is not a class, namespace, or enumeration
       { return _AT_Type::_S_ref(_M_elems, __n); }
                ^~~~~~~~
/usr/include/c++/7/array: In member function 'std::array<_Tp, <declaration error> >::value_type& std::array<_Tp, <declaration error> >::at(int)':
/usr/include/c++/7/array:195:13: error: '_Nm' was not declared in this scope
  if (__n >= _Nm)
             ^~~
/usr/include/c++/7/array:199:9: error: '_AT_Type' is not a class, namespace, or enumeration
  return _AT_Type::_S_ref(_M_elems, __n);
         ^~~~~~~~
/usr/include/c++/7/array: In member function 'constexpr const value_type& std::array<_Tp, <declaration error> >::at(int) const':
/usr/include/c++/7/array:207:15: error: '_Nm' was not declared in this scope
  return __n < _Nm ? _AT_Type::_S_ref(_M_elems, __n)
               ^~~
/usr/include/c++/7/array:207:21: error: '_AT_Type' is not a class, namespace, or enumeration
  return __n < _Nm ? _AT_Type::_S_ref(_M_elems, __n)
                     ^~~~~~~~
/usr/include/c++/7/array:211:7: error: '_AT_Type' is not a class, namespace, or enumeration
       _AT_Type::_S_ref(_M_elems, 0));
       ^~~~~~~~
/usr/include/c++/7/array: In member function 'constexpr const value_type& std::array<_Tp, <declaration error> >::front() const':
/usr/include/c++/7/array:220:16: error: '_AT_Type' is not a class, namespace, or enumeration
       { return _AT_Type::_S_ref(_M_elems, 0); }
                ^~~~~~~~
/usr/include/c++/7/array: In member function 'std::array<_Tp, <declaration error> >::value_type& std::array<_Tp, <declaration error> >::back()':
/usr/include/c++/7/array:224:16: error: '_Nm' was not declared in this scope
       { return _Nm ? *(end() - 1) : *end(); }
                ^~~
/usr/include/c++/7/array: In member function 'constexpr const value_type& std::array<_Tp, <declaration error> >::back() const':
/usr/include/c++/7/array:229:9: error: '_Nm' was not declared in this scope
  return _Nm ? _AT_Type::_S_ref(_M_elems, _Nm - 1)
         ^~~
/usr/include/c++/7/array:229:15: error: '_AT_Type' is not a class, namespace, or enumeration
  return _Nm ? _AT_Type::_S_ref(_M_elems, _Nm - 1)
               ^~~~~~~~
/usr/include/c++/7/array:230:16: error: '_AT_Type' is not a class, namespace, or enumeration
              : _AT_Type::_S_ref(_M_elems, 0);
                ^~~~~~~~
/usr/include/c++/7/array: In member function 'std::array<_Tp, <declaration error> >::value_type* std::array<_Tp, <declaration error> >::data()':
/usr/include/c++/7/array:235:16: error: '_AT_Type' is not a class, namespace, or enumeration
       { return _AT_Type::_S_ptr(_M_elems); }
                ^~~~~~~~
/usr/include/c++/7/array: In member function 'const value_type* std::array<_Tp, <declaration error> >::data() const':
/usr/include/c++/7/array:239:16: error: '_AT_Type' is not a class, namespace, or enumeration
       { return _AT_Type::_S_ptr(_M_elems); }
                ^~~~~~~~
/usr/include/c++/7/array: At global scope:
/usr/include/c++/7/array:250:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Nm>
                               ^~~~~~
/usr/include/c++/7/array:252:33: error: '_Nm' was not declared in this scope
     operator==(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                 ^~~
/usr/include/c++/7/array:252:36: error: template argument 2 is invalid
     operator==(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                    ^
/usr/include/c++/7/array:252:63: error: '_Nm' was not declared in this scope
     operator==(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                               ^~~
/usr/include/c++/7/array:252:66: error: template argument 2 is invalid
     operator==(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                                  ^
/usr/include/c++/7/array:252:74: error: 'bool std::operator==(const int&, const int&)' must have an argument of class or enumerated type
     operator==(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                                          ^
/usr/include/c++/7/array:255:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Nm>
                               ^~~~~~
/usr/include/c++/7/array:257:33: error: '_Nm' was not declared in this scope
     operator!=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                 ^~~
/usr/include/c++/7/array:257:36: error: template argument 2 is invalid
     operator!=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                    ^
/usr/include/c++/7/array:257:63: error: '_Nm' was not declared in this scope
     operator!=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                               ^~~
/usr/include/c++/7/array:257:66: error: template argument 2 is invalid
     operator!=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                                  ^
/usr/include/c++/7/array:257:74: error: 'bool std::operator!=(const int&, const int&)' must have an argument of class or enumerated type
     operator!=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                                          ^
/usr/include/c++/7/array:260:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Nm>
                               ^~~~~~
/usr/include/c++/7/array:262:32: error: '_Nm' was not declared in this scope
     operator<(const array<_Tp, _Nm>& __a, const array<_Tp, _Nm>& __b)
                                ^~~
/usr/include/c++/7/array:262:35: error: template argument 2 is invalid
     operator<(const array<_Tp, _Nm>& __a, const array<_Tp, _Nm>& __b)
                                   ^
/usr/include/c++/7/array:262:60: error: '_Nm' was not declared in this scope
     operator<(const array<_Tp, _Nm>& __a, const array<_Tp, _Nm>& __b)
                                                            ^~~
/usr/include/c++/7/array:262:63: error: template argument 2 is invalid
     operator<(const array<_Tp, _Nm>& __a, const array<_Tp, _Nm>& __b)
                                                               ^
/usr/include/c++/7/array:262:69: error: 'bool std::operator<(const int&, const int&)' must have an argument of class or enumerated type
     operator<(const array<_Tp, _Nm>& __a, const array<_Tp, _Nm>& __b)
                                                                     ^
/usr/include/c++/7/array:268:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Nm>
                               ^~~~~~
/usr/include/c++/7/array:270:32: error: '_Nm' was not declared in this scope
     operator>(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                ^~~
/usr/include/c++/7/array:270:35: error: template argument 2 is invalid
     operator>(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                   ^
/usr/include/c++/7/array:270:62: error: '_Nm' was not declared in this scope
     operator>(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                              ^~~
/usr/include/c++/7/array:270:65: error: template argument 2 is invalid
     operator>(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                                 ^
/usr/include/c++/7/array:270:73: error: 'bool std::operator>(const int&, const int&)' must have an argument of class or enumerated type
     operator>(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                                         ^
/usr/include/c++/7/array:273:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Nm>
                               ^~~~~~
/usr/include/c++/7/array:275:33: error: '_Nm' was not declared in this scope
     operator<=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                 ^~~
/usr/include/c++/7/array:275:36: error: template argument 2 is invalid
     operator<=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                    ^
/usr/include/c++/7/array:275:63: error: '_Nm' was not declared in this scope
     operator<=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                               ^~~
/usr/include/c++/7/array:275:66: error: template argument 2 is invalid
     operator<=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                                  ^
/usr/include/c++/7/array:275:74: error: 'bool std::operator<=(const int&, const int&)' must have an argument of class or enumerated type
     operator<=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                                          ^
/usr/include/c++/7/array:278:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Nm>
                               ^~~~~~
/usr/include/c++/7/array:280:33: error: '_Nm' was not declared in this scope
     operator>=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                 ^~~
/usr/include/c++/7/array:280:36: error: template argument 2 is invalid
     operator>=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                    ^
/usr/include/c++/7/array:280:63: error: '_Nm' was not declared in this scope
     operator>=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                               ^~~
/usr/include/c++/7/array:280:66: error: template argument 2 is invalid
     operator>=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                                  ^
/usr/include/c++/7/array:280:74: error: 'bool std::operator>=(const int&, const int&)' must have an argument of class or enumerated type
     operator>=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
                                                                          ^
/usr/include/c++/7/array:284:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Nm>
                               ^~~~~~
/usr/include/c++/7/array:294:21: error: '_Nm' was not declared in this scope
     swap(array<_Tp, _Nm>& __one, array<_Tp, _Nm>& __two)
                     ^~~
/usr/include/c++/7/array:294:24: error: template argument 2 is invalid
     swap(array<_Tp, _Nm>& __one, array<_Tp, _Nm>& __two)
                        ^
/usr/include/c++/7/array:294:45: error: '_Nm' was not declared in this scope
     swap(array<_Tp, _Nm>& __one, array<_Tp, _Nm>& __two)
                                             ^~~
/usr/include/c++/7/array:294:48: error: template argument 2 is invalid
     swap(array<_Tp, _Nm>& __one, array<_Tp, _Nm>& __two)
                                                ^
/usr/include/c++/7/array:295:29: error: request for member 'swap' in '__one', which is of non-class type 'int'
     noexcept(noexcept(__one.swap(__two)))
                             ^~~~
/usr/include/c++/7/array: In function 'void std::swap(int&, int&)':
/usr/include/c++/7/array:296:13: error: request for member 'swap' in '__one', which is of non-class type 'int'
     { __one.swap(__two); }
             ^~~~
/usr/include/c++/7/array: At global scope:
/usr/include/c++/7/array:305:17: error: 'std::size_t' has not been declared
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
                 ^~~~~~
/usr/include/c++/7/array:305:49: error: 'std::size_t' has not been declared
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
                                                 ^~~~~~
/usr/include/c++/7/array:307:20: error: '_Nm' was not declared in this scope
     get(array<_Tp, _Nm>& __arr) noexcept
                    ^~~
/usr/include/c++/7/array:307:23: error: template argument 2 is invalid
     get(array<_Tp, _Nm>& __arr) noexcept
                       ^
/usr/include/c++/7/array: In function 'constexpr _Tp& std::get(int&)':
/usr/include/c++/7/array:309:21: error: '_Int' was not declared in this scope
       static_assert(_Int < _Nm, "array index is within bounds");
                     ^~~~
/usr/include/c++/7/array:309:21: note: suggested alternative: 'rint'
       static_assert(_Int < _Nm, "array index is within bounds");
                     ^~~~
                     rint
/usr/include/c++/7/array:309:28: error: '_Nm' was not declared in this scope
       static_assert(_Int < _Nm, "array index is within bounds");
                            ^~~
/usr/include/c++/7/array:311:15: error: request for member '_M_elems' in '__arr', which is of non-class type 'int'
  _S_ref(__arr._M_elems, _Int);
               ^~~~~~~~
/usr/include/c++/7/array: At global scope:
/usr/include/c++/7/array:314:17: error: 'std::size_t' has not been declared
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
                 ^~~~~~
/usr/include/c++/7/array:314:49: error: 'std::size_t' has not been declared
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
                                                 ^~~~~~
/usr/include/c++/7/array:316:20: error: '_Nm' was not declared in this scope
     get(array<_Tp, _Nm>&& __arr) noexcept
                    ^~~
/usr/include/c++/7/array:316:23: error: template argument 2 is invalid
     get(array<_Tp, _Nm>&& __arr) noexcept
                       ^
/usr/include/c++/7/array: In function 'constexpr _Tp&& std::get(int&&)':
/usr/include/c++/7/array:318:21: error: '_Int' was not declared in this scope
       static_assert(_Int < _Nm, "array index is within bounds");
                     ^~~~
/usr/include/c++/7/array:318:21: note: suggested alternative: 'rint'
       static_assert(_Int < _Nm, "array index is within bounds");
                     ^~~~
                     rint
/usr/include/c++/7/array:318:28: error: '_Nm' was not declared in this scope
       static_assert(_Int < _Nm, "array index is within bounds");
                            ^~~
/usr/include/c++/7/array:319:55: error: no matching function for call to 'get<_Int>(int&)'
       return std::move(_GLIBCXX_STD_C::get<_Int>(__arr));
                                                       ^
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility:225:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int& std::get(std::pair<_Tp1, _Tp2>&)
     get(std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:225:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:230:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int&& std::get(std::pair<_Tp1, _Tp2>&&)
     get(std::pair<_Tp1, _Tp2>&& __in) noexcept
     ^~~
/usr/include/c++/7/utility:230:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:235:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr const int& std::get(const std::pair<_Tp1, _Tp2>&)
     get(const std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:235:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array:307:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp& std::get(int&)
     get(array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:307:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:316:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp&& std::get(int&&)
     get(array<_Tp, _Nm>&& __arr) noexcept
     ^~~
/usr/include/c++/7/array:316:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array: At global scope:
/usr/include/c++/7/array:322:17: error: 'std::size_t' has not been declared
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
                 ^~~~~~
/usr/include/c++/7/array:322:49: error: 'std::size_t' has not been declared
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
                                                 ^~~~~~
/usr/include/c++/7/array:324:26: error: '_Nm' was not declared in this scope
     get(const array<_Tp, _Nm>& __arr) noexcept
                          ^~~
/usr/include/c++/7/array:324:29: error: template argument 2 is invalid
     get(const array<_Tp, _Nm>& __arr) noexcept
                             ^
/usr/include/c++/7/array: In function 'constexpr const _Tp& std::get(const int&)':
/usr/include/c++/7/array:326:21: error: '_Int' was not declared in this scope
       static_assert(_Int < _Nm, "array index is within bounds");
                     ^~~~
/usr/include/c++/7/array:326:21: note: suggested alternative: 'rint'
       static_assert(_Int < _Nm, "array index is within bounds");
                     ^~~~
                     rint
/usr/include/c++/7/array:326:28: error: '_Nm' was not declared in this scope
       static_assert(_Int < _Nm, "array index is within bounds");
                            ^~~
/usr/include/c++/7/array:328:15: error: request for member '_M_elems' in '__arr', which is of non-class type 'const int'
  _S_ref(__arr._M_elems, _Int);
               ^~~~~~~~
/usr/include/c++/7/array: At global scope:
/usr/include/c++/7/array:345:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Nm>
                               ^~~~~~
/usr/include/c++/7/array:346:50: error: '_Nm' was not declared in this scope
     struct tuple_size<_GLIBCXX_STD_C::array<_Tp, _Nm>>
                                                  ^~~
/usr/include/c++/7/array:346:50: error: template argument 2 is invalid
/usr/include/c++/7/array:346:53: error: template argument 1 is invalid
     struct tuple_size<_GLIBCXX_STD_C::array<_Tp, _Nm>>
                                                     ^~
/usr/include/c++/7/array:347:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, _Nm> { };
                                     ^~~~~~
/usr/include/c++/7/array:347:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array:347:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, _Nm> { };
                                     ^~~~~~
/usr/include/c++/7/array:347:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array:347:45: error: '_Nm' was not declared in this scope
     : public integral_constant<std::size_t, _Nm> { };
                                             ^~~
/usr/include/c++/7/array:347:48: error: template argument 1 is invalid
     : public integral_constant<std::size_t, _Nm> { };
                                                ^
/usr/include/c++/7/array:347:48: error: template argument 2 is invalid
/usr/include/c++/7/array:350:17: error: 'std::size_t' has not been declared
   template<std::size_t _Int, typename _Tp>
                 ^~~~~~
/usr/include/c++/7/array:354:17: error: 'std::size_t' has not been declared
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
                 ^~~~~~
/usr/include/c++/7/array:354:49: error: 'std::size_t' has not been declared
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
                                                 ^~~~~~
/usr/include/c++/7/array:355:26: error: '_Int' was not declared in this scope
     struct tuple_element<_Int, _GLIBCXX_STD_C::array<_Tp, _Nm>>
                          ^~~~
/usr/include/c++/7/array:355:26: note: suggested alternative: 'rint'
     struct tuple_element<_Int, _GLIBCXX_STD_C::array<_Tp, _Nm>>
                          ^~~~
                          rint
/usr/include/c++/7/array:355:59: error: '_Nm' was not declared in this scope
     struct tuple_element<_Int, _GLIBCXX_STD_C::array<_Tp, _Nm>>
                                                           ^~~
/usr/include/c++/7/array:355:59: error: template argument 2 is invalid
/usr/include/c++/7/array:355:62: error: template argument 1 is invalid
     struct tuple_element<_Int, _GLIBCXX_STD_C::array<_Tp, _Nm>>
                                                              ^~
/usr/include/c++/7/array:355:62: error: template argument 2 is invalid
/usr/include/c++/7/array:361:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Nm>
                               ^~~~~~
/usr/include/c++/7/array:362:60: error: '_Nm' was not declared in this scope
     struct __is_tuple_like_impl<_GLIBCXX_STD_C::array<_Tp, _Nm>> : true_type
                                                            ^~~
/usr/include/c++/7/array:362:60: error: template argument 2 is invalid
/usr/include/c++/7/array:362:63: error: template argument 1 is invalid
     struct __is_tuple_like_impl<_GLIBCXX_STD_C::array<_Tp, _Nm>> : true_type
                                                               ^~
In file included from /usr/include/c++/7/functional:54:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/tuple:68:17: error: 'std::size_t' has not been declared
   template<std::size_t _Idx, typename _Head,
                 ^~~~~~
/usr/include/c++/7/tuple:70:12: error: no default argument for '_Head'
     struct _Head_base;
            ^~~~~~~~~~
/usr/include/c++/7/tuple:72:17: error: 'std::size_t' has not been declared
   template<std::size_t _Idx, typename _Head>
                 ^~~~~~
/usr/include/c++/7/tuple:73:23: error: '_Idx' was not declared in this scope
     struct _Head_base<_Idx, _Head, true>
                       ^~~~
/usr/include/c++/7/tuple:73:40: error: template argument 1 is invalid
     struct _Head_base<_Idx, _Head, true>
                                        ^
/usr/include/c++/7/tuple:119:17: error: 'std::size_t' has not been declared
   template<std::size_t _Idx, typename _Head>
                 ^~~~~~
/usr/include/c++/7/tuple:120:23: error: '_Idx' was not declared in this scope
     struct _Head_base<_Idx, _Head, false>
                       ^~~~
/usr/include/c++/7/tuple:120:41: error: template argument 1 is invalid
     struct _Head_base<_Idx, _Head, false>
                                         ^
/usr/include/c++/7/tuple:176:17: error: 'std::size_t' has not been declared
   template<std::size_t _Idx, typename... _Elements>
                 ^~~~~~
/usr/include/c++/7/tuple:184:17: error: 'std::size_t' has not been declared
   template<std::size_t _Idx, typename _Head, typename... _Tail>
                 ^~~~~~
/usr/include/c++/7/tuple:185:24: error: '_Idx' was not declared in this scope
     struct _Tuple_impl<_Idx, _Head, _Tail...>
                        ^~~~
/usr/include/c++/7/tuple:185:45: error: template argument 1 is invalid
     struct _Tuple_impl<_Idx, _Head, _Tail...>
                                             ^
/usr/include/c++/7/tuple:186:26: error: '_Idx' was not declared in this scope
     : public _Tuple_impl<_Idx + 1, _Tail...>,
                          ^~~~
/usr/include/c++/7/tuple:186:44: error: template argument 1 is invalid
     : public _Tuple_impl<_Idx + 1, _Tail...>,
                                            ^
/usr/include/c++/7/tuple:187:26: error: '_Idx' was not declared in this scope
       private _Head_base<_Idx, _Head>
                          ^~~~
/usr/include/c++/7/tuple:187:37: error: template argument 1 is invalid
       private _Head_base<_Idx, _Head>
                                     ^
/usr/include/c++/7/tuple:342:17: error: 'std::size_t' has not been declared
   template<std::size_t _Idx, typename _Head>
                 ^~~~~~
/usr/include/c++/7/tuple:343:24: error: '_Idx' was not declared in this scope
     struct _Tuple_impl<_Idx, _Head>
                        ^~~~
/usr/include/c++/7/tuple:343:35: error: template argument 1 is invalid
     struct _Tuple_impl<_Idx, _Head>
                                   ^
/usr/include/c++/7/tuple:344:26: error: '_Idx' was not declared in this scope
     : private _Head_base<_Idx, _Head>
                          ^~~~
/usr/include/c++/7/tuple:344:37: error: template argument 1 is invalid
     : private _Head_base<_Idx, _Head>
                                     ^
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_Elements>::tuple()':
/usr/include/c++/7/tuple:582:9: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
       : _Inherited() { }
         ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_Elements>::tuple()':
/usr/include/c++/7/tuple:592:9: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
       : _Inherited() { }
         ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_Elements>::tuple(const _Elements& ...)':
/usr/include/c++/7/tuple:609:9: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
       : _Inherited(__elements...) { }
         ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_Elements>::tuple(const _Elements& ...)':
/usr/include/c++/7/tuple:620:9: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
       : _Inherited(__elements...) { }
         ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_Elements>::tuple(_UElements&& ...)':
/usr/include/c++/7/tuple:647:11: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
         : _Inherited(std::forward<_UElements>(__elements)...) { }
           ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_Elements>::tuple(_UElements&& ...)':
/usr/include/c++/7/tuple:658:4: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
  : _Inherited(std::forward<_UElements>(__elements)...) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_Elements>::tuple(const std::tuple<_Args1 ...>&)':
/usr/include/c++/7/tuple:679:11: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
         : _Inherited(static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
           ^~~~~~~~~~
/usr/include/c++/7/tuple:679:69: error: expected '>' before '&' token
         : _Inherited(static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
                                                                     ^
/usr/include/c++/7/tuple:679:69: error: expected '(' before '&' token
/usr/include/c++/7/tuple:679:70: error: expected primary-expression before '>' token
         : _Inherited(static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
                                                                      ^
/usr/include/c++/7/tuple:680:11: error: expected '{' at end of input
         { }
           ^
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_Elements>::tuple(const std::tuple<_Args1 ...>&)':
/usr/include/c++/7/tuple:691:11: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
         : _Inherited(static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
           ^~~~~~~~~~
/usr/include/c++/7/tuple:691:69: error: expected '>' before '&' token
         : _Inherited(static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
                                                                     ^
/usr/include/c++/7/tuple:691:69: error: expected '(' before '&' token
/usr/include/c++/7/tuple:691:70: error: expected primary-expression before '>' token
         : _Inherited(static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
                                                                      ^
/usr/include/c++/7/tuple:692:11: error: expected '{' at end of input
         { }
           ^
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_Elements>::tuple(std::tuple<_Args1 ...>&&)':
/usr/include/c++/7/tuple:703:11: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
         : _Inherited(static_cast<_Tuple_impl<0, _UElements...>&&>(__in)) { }
           ^~~~~~~~~~
/usr/include/c++/7/tuple:703:63: error: expected '>' before '&&' token
         : _Inherited(static_cast<_Tuple_impl<0, _UElements...>&&>(__in)) { }
                                                               ^~
/usr/include/c++/7/tuple:703:63: error: expected '(' before '&&' token
/usr/include/c++/7/tuple:703:65: error: expected identifier before '>' token
         : _Inherited(static_cast<_Tuple_impl<0, _UElements...>&&>(__in)) { }
                                                                 ^
/usr/include/c++/7/tuple:703:76: error: expected '{' at end of input
         : _Inherited(static_cast<_Tuple_impl<0, _UElements...>&&>(__in)) { }
                                                                            ^
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_Elements>::tuple(std::tuple<_Args1 ...>&&)':
/usr/include/c++/7/tuple:714:11: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
         : _Inherited(static_cast<_Tuple_impl<0, _UElements...>&&>(__in)) { }
           ^~~~~~~~~~
/usr/include/c++/7/tuple:714:63: error: expected '>' before '&&' token
         : _Inherited(static_cast<_Tuple_impl<0, _UElements...>&&>(__in)) { }
                                                               ^~
/usr/include/c++/7/tuple:714:63: error: expected '(' before '&&' token
/usr/include/c++/7/tuple:714:65: error: expected identifier before '>' token
         : _Inherited(static_cast<_Tuple_impl<0, _UElements...>&&>(__in)) { }
                                                                 ^
/usr/include/c++/7/tuple:714:76: error: expected '{' at end of input
         : _Inherited(static_cast<_Tuple_impl<0, _UElements...>&&>(__in)) { }
                                                                            ^
/usr/include/c++/7/tuple: In constructor 'std::tuple<_Elements>::tuple(std::allocator_arg_t, const _Alloc&)':
/usr/include/c++/7/tuple:720:4: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
  : _Inherited(__tag, __a) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_Elements>::tuple(std::allocator_arg_t, const _Alloc&, const _Elements& ...)':
/usr/include/c++/7/tuple:731:4: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
  : _Inherited(__tag, __a, __elements...) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_Elements>::tuple(std::allocator_arg_t, const _Alloc&, const _Elements& ...)':
/usr/include/c++/7/tuple:742:4: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
  : _Inherited(__tag, __a, __elements...) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_Elements>::tuple(std::allocator_arg_t, const _Alloc&, _UElements&& ...)':
/usr/include/c++/7/tuple:752:4: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
  : _Inherited(__tag, __a, std::forward<_UElements>(__elements)...)
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_Elements>::tuple(std::allocator_arg_t, const _Alloc&, _UElements&& ...)':
/usr/include/c++/7/tuple:763:4: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
  : _Inherited(__tag, __a, std::forward<_UElements>(__elements)...)
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_Elements>::tuple(std::allocator_arg_t, const _Alloc&, const std::tuple<_Elements>&)':
/usr/include/c++/7/tuple:768:4: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
  : _Inherited(__tag, __a, static_cast<const _Inherited&>(__in)) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_Elements>::tuple(std::allocator_arg_t, const _Alloc&, std::tuple<_Elements>&&)':
/usr/include/c++/7/tuple:772:4: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
  : _Inherited(__tag, __a, static_cast<_Inherited&&>(__in)) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_Elements>::tuple(std::allocator_arg_t, const _Alloc&, const std::tuple<_UElements ...>&)':
/usr/include/c++/7/tuple:785:4: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
  : _Inherited(__tag, __a,
    ^~~~~~~~~~
/usr/include/c++/7/tuple:786:62: error: expected '>' before '&' token
               static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
                                                              ^
/usr/include/c++/7/tuple:786:62: error: expected '(' before '&' token
/usr/include/c++/7/tuple:786:63: error: expected primary-expression before '>' token
               static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
                                                               ^
/usr/include/c++/7/tuple:787:4: error: expected '{' at end of input
  { }
    ^
/usr/include/c++/7/tuple: In constructor 'std::tuple<_Elements>::tuple(std::allocator_arg_t, const _Alloc&, const std::tuple<_UElements ...>&)':
/usr/include/c++/7/tuple:800:4: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
  : _Inherited(__tag, __a,
    ^~~~~~~~~~
/usr/include/c++/7/tuple:801:62: error: expected '>' before '&' token
               static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
                                                              ^
/usr/include/c++/7/tuple:801:62: error: expected '(' before '&' token
/usr/include/c++/7/tuple:801:63: error: expected primary-expression before '>' token
               static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
                                                               ^
/usr/include/c++/7/tuple:802:4: error: expected '{' at end of input
  { }
    ^
/usr/include/c++/7/tuple: In constructor 'std::tuple<_Elements>::tuple(std::allocator_arg_t, const _Alloc&, std::tuple<_UElements ...>&&)':
/usr/include/c++/7/tuple:815:4: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
  : _Inherited(__tag, __a,
    ^~~~~~~~~~
/usr/include/c++/7/tuple:816:56: error: expected '>' before '&&' token
               static_cast<_Tuple_impl<0, _UElements...>&&>(__in))
                                                        ^~
/usr/include/c++/7/tuple:816:56: error: expected '(' before '&&' token
/usr/include/c++/7/tuple:816:58: error: expected identifier before '>' token
               static_cast<_Tuple_impl<0, _UElements...>&&>(__in))
                                                          ^
/usr/include/c++/7/tuple:817:4: error: expected '{' at end of input
  { }
    ^
/usr/include/c++/7/tuple: In constructor 'std::tuple<_Elements>::tuple(std::allocator_arg_t, const _Alloc&, std::tuple<_UElements ...>&&)':
/usr/include/c++/7/tuple:830:4: error: 'typedef int std::tuple<_Elements>::_Inherited' is not a non-static data member of 'std::tuple<_Elements>'
  : _Inherited(__tag, __a,
    ^~~~~~~~~~
/usr/include/c++/7/tuple:831:56: error: expected '>' before '&&' token
               static_cast<_Tuple_impl<0, _UElements...>&&>(__in))
                                                        ^~
/usr/include/c++/7/tuple:831:56: error: expected '(' before '&&' token
/usr/include/c++/7/tuple:831:58: error: expected identifier before '>' token
               static_cast<_Tuple_impl<0, _UElements...>&&>(__in))
                                                          ^
/usr/include/c++/7/tuple:832:4: error: expected '{' at end of input
  { }
    ^
/usr/include/c++/7/tuple: In member function 'void std::tuple<_Elements>::swap(std::tuple<_Elements>&)':
/usr/include/c++/7/tuple:872:28: error: qualified-id in declaration before '(' token
       { _Inherited::_M_swap(__in); }
                            ^
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple()':
/usr/include/c++/7/tuple:920:9: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
       : _Inherited() { }
         ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple()':
/usr/include/c++/7/tuple:934:9: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
       : _Inherited() { }
         ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple(const _T1&, const _T2&)':
/usr/include/c++/7/tuple:948:11: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
         : _Inherited(__a1, __a2) { }
           ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple(const _T1&, const _T2&)':
/usr/include/c++/7/tuple:957:11: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
         : _Inherited(__a1, __a2) { }
           ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple(_U1&&, _U2&&)':
/usr/include/c++/7/tuple:972:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(std::forward<_U1>(__a1), std::forward<_U2>(__a2)) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple(_U1&&, _U2&&)':
/usr/include/c++/7/tuple:983:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(std::forward<_U1>(__a1), std::forward<_U2>(__a2)) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple(const std::tuple<_U1, _U2>&)':
/usr/include/c++/7/tuple:996:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in)) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple:996:57: error: expected '>' before '&' token
  : _Inherited(static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in)) { }
                                                         ^
/usr/include/c++/7/tuple:996:57: error: expected '(' before '&' token
/usr/include/c++/7/tuple:996:58: error: expected primary-expression before '>' token
  : _Inherited(static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in)) { }
                                                          ^
/usr/include/c++/7/tuple:996:69: error: expected '{' at end of input
  : _Inherited(static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in)) { }
                                                                     ^
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple(const std::tuple<_U1, _U2>&)':
/usr/include/c++/7/tuple:1005:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in)) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple:1005:57: error: expected '>' before '&' token
  : _Inherited(static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in)) { }
                                                         ^
/usr/include/c++/7/tuple:1005:57: error: expected '(' before '&' token
/usr/include/c++/7/tuple:1005:58: error: expected primary-expression before '>' token
  : _Inherited(static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in)) { }
                                                          ^
/usr/include/c++/7/tuple:1005:69: error: expected '{' at end of input
  : _Inherited(static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in)) { }
                                                                     ^
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple(std::tuple<_U1, _U2>&&)':
/usr/include/c++/7/tuple:1014:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in)) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple:1014:51: error: expected '>' before '&&' token
  : _Inherited(static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in)) { }
                                                   ^~
/usr/include/c++/7/tuple:1014:51: error: expected '(' before '&&' token
/usr/include/c++/7/tuple:1014:53: error: expected identifier before '>' token
  : _Inherited(static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in)) { }
                                                     ^
/usr/include/c++/7/tuple:1014:64: error: expected '{' at end of input
  : _Inherited(static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in)) { }
                                                                ^
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple(std::tuple<_U1, _U2>&&)':
/usr/include/c++/7/tuple:1023:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in)) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple:1023:51: error: expected '>' before '&&' token
  : _Inherited(static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in)) { }
                                                   ^~
/usr/include/c++/7/tuple:1023:51: error: expected '(' before '&&' token
/usr/include/c++/7/tuple:1023:53: error: expected identifier before '>' token
  : _Inherited(static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in)) { }
                                                     ^
/usr/include/c++/7/tuple:1023:64: error: expected '{' at end of input
  : _Inherited(static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in)) { }
                                                                ^
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple(const std::pair<_U1, _U2>&)':
/usr/include/c++/7/tuple:1032:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__in.first, __in.second) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple(const std::pair<_U1, _U2>&)':
/usr/include/c++/7/tuple:1041:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__in.first, __in.second) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple(std::pair<_U1, _U2>&&)':
/usr/include/c++/7/tuple:1050:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(std::forward<_U1>(__in.first),
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'constexpr std::tuple<_T1, _T2>::tuple(std::pair<_U1, _U2>&&)':
/usr/include/c++/7/tuple:1060:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(std::forward<_U1>(__in.first),
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&)':
/usr/include/c++/7/tuple:1067:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, const _T1&, const _T2&)':
/usr/include/c++/7/tuple:1079:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a, __a1, __a2) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, const _T1&, const _T2&)':
/usr/include/c++/7/tuple:1091:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a, __a1, __a2) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, _U1&&, _U2&&)':
/usr/include/c++/7/tuple:1100:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a, std::forward<_U1>(__a1),
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, _U1&&, _U2&&)':
/usr/include/c++/7/tuple:1111:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a, std::forward<_U1>(__a1),
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, const std::tuple<_T1, _T2>&)':
/usr/include/c++/7/tuple:1116:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a, static_cast<const _Inherited&>(__in)) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, std::tuple<_T1, _T2>&&)':
/usr/include/c++/7/tuple:1120:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a, static_cast<_Inherited&&>(__in)) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, const std::tuple<_U1, _U2>&)':
/usr/include/c++/7/tuple:1130:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a,
    ^~~~~~~~~~
/usr/include/c++/7/tuple:1131:57: error: expected '>' before '&' token
               static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in))
                                                         ^
/usr/include/c++/7/tuple:1131:57: error: expected '(' before '&' token
/usr/include/c++/7/tuple:1131:58: error: expected primary-expression before '>' token
               static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in))
                                                          ^
/usr/include/c++/7/tuple:1132:4: error: expected '{' at end of input
  { }
    ^
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, const std::tuple<_U1, _U2>&)':
/usr/include/c++/7/tuple:1142:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a,
    ^~~~~~~~~~
/usr/include/c++/7/tuple:1143:57: error: expected '>' before '&' token
               static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in))
                                                         ^
/usr/include/c++/7/tuple:1143:57: error: expected '(' before '&' token
/usr/include/c++/7/tuple:1143:58: error: expected primary-expression before '>' token
               static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in))
                                                          ^
/usr/include/c++/7/tuple:1144:4: error: expected '{' at end of input
  { }
    ^
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, std::tuple<_U1, _U2>&&)':
/usr/include/c++/7/tuple:1153:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a, static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in))
    ^~~~~~~~~~
/usr/include/c++/7/tuple:1153:63: error: expected '>' before '&&' token
  : _Inherited(__tag, __a, static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in))
                                                               ^~
/usr/include/c++/7/tuple:1153:63: error: expected '(' before '&&' token
/usr/include/c++/7/tuple:1153:65: error: expected identifier before '>' token
  : _Inherited(__tag, __a, static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in))
                                                                 ^
/usr/include/c++/7/tuple:1154:4: error: expected '{' at end of input
  { }
    ^
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, std::tuple<_U1, _U2>&&)':
/usr/include/c++/7/tuple:1164:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a, static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in))
    ^~~~~~~~~~
/usr/include/c++/7/tuple:1164:63: error: expected '>' before '&&' token
  : _Inherited(__tag, __a, static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in))
                                                               ^~
/usr/include/c++/7/tuple:1164:63: error: expected '(' before '&&' token
/usr/include/c++/7/tuple:1164:65: error: expected identifier before '>' token
  : _Inherited(__tag, __a, static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in))
                                                                 ^
/usr/include/c++/7/tuple:1165:4: error: expected '{' at end of input
  { }
    ^
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, const std::pair<_U1, _U2>&)':
/usr/include/c++/7/tuple:1175:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a, __in.first, __in.second) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, const std::pair<_U1, _U2>&)':
/usr/include/c++/7/tuple:1185:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a, __in.first, __in.second) { }
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, std::pair<_U1, _U2>&&)':
/usr/include/c++/7/tuple:1194:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a, std::forward<_U1>(__in.first),
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In constructor 'std::tuple<_T1, _T2>::tuple(std::allocator_arg_t, const _Alloc&, std::pair<_U1, _U2>&&)':
/usr/include/c++/7/tuple:1205:4: error: 'typedef int std::tuple<_T1, _T2>::_Inherited' is not a non-static data member of 'std::tuple<_T1, _T2>'
  : _Inherited(__tag, __a, std::forward<_U1>(__in.first),
    ^~~~~~~~~~
/usr/include/c++/7/tuple: In member function 'void std::tuple<_T1, _T2>::swap(std::tuple<_T1, _T2>&)':
/usr/include/c++/7/tuple:1260:28: error: qualified-id in declaration before '(' token
       { _Inherited::_M_swap(__in); }
                            ^
/usr/include/c++/7/tuple: At global scope:
/usr/include/c++/7/tuple:1267:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, sizeof...(_Elements)> { };
                                     ^~~~~~
/usr/include/c++/7/tuple:1267:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/functional:54:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/tuple:1267:37: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, sizeof...(_Elements)> { };
                                     ^~~~~~
/usr/include/c++/7/tuple:1267:37: note: suggested alternative:
In file included from /usr/include/stdlib.h:31:0,
                 from /usr/include/c++/7/bits/std_abs.h:38,
                 from /usr/include/c++/7/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from /usr/include/c++/7/functional:54:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/tuple:1267:65: error: template argument 1 is invalid
     : public integral_constant<std::size_t, sizeof...(_Elements)> { };
                                                                 ^
/usr/include/c++/7/tuple:1267:65: note: invalid template non-type parameter
/usr/include/c++/7/tuple:1278:17: error: 'std::size_t' has not been declared
   template<std::size_t __i, typename _Head, typename... _Tail>
                 ^~~~~~
/usr/include/c++/7/tuple:1279:26: error: '__i' was not declared in this scope
     struct tuple_element<__i, tuple<_Head, _Tail...> >
                          ^~~
/usr/include/c++/7/tuple:1279:26: note: suggested alternative: '__N'
     struct tuple_element<__i, tuple<_Head, _Tail...> >
                          ^~~
                          __N
/usr/include/c++/7/tuple:1279:54: error: template argument 1 is invalid
     struct tuple_element<__i, tuple<_Head, _Tail...> >
                                                      ^
/usr/include/c++/7/tuple:1280:21: error: '__i' was not declared in this scope
     : tuple_element<__i - 1, tuple<_Tail...> > { };
                     ^~~
/usr/include/c++/7/tuple:1280:21: note: suggested alternative: '__N'
     : tuple_element<__i - 1, tuple<_Tail...> > { };
                     ^~~
                     __N
/usr/include/c++/7/tuple:1280:46: error: template argument 1 is invalid
     : tuple_element<__i - 1, tuple<_Tail...> > { };
                                              ^
/usr/include/c++/7/tuple:1301:17: error: 'std::size_t' has not been declared
   template<std::size_t __i, typename _Head, typename... _Tail>
                 ^~~~~~
/usr/include/c++/7/tuple:1303:30: error: '__i' was not declared in this scope
     __get_helper(_Tuple_impl<__i, _Head, _Tail...>& __t) noexcept
                              ^~~
/usr/include/c++/7/tuple:1303:30: note: suggested alternative: '__N'
     __get_helper(_Tuple_impl<__i, _Head, _Tail...>& __t) noexcept
                              ^~~
                              __N
/usr/include/c++/7/tuple:1303:50: error: template argument 1 is invalid
     __get_helper(_Tuple_impl<__i, _Head, _Tail...>& __t) noexcept
                                                  ^
/usr/include/c++/7/tuple: In function 'constexpr _Head& std::__get_helper(int&)':
/usr/include/c++/7/tuple:1304:26: error: '__i' was not declared in this scope
     { return _Tuple_impl<__i, _Head, _Tail...>::_M_head(__t); }
                          ^~~
/usr/include/c++/7/tuple:1304:26: note: suggested alternative: '__t'
     { return _Tuple_impl<__i, _Head, _Tail...>::_M_head(__t); }
                          ^~~
                          __t
/usr/include/c++/7/tuple:1304:46: error: template argument 1 is invalid
     { return _Tuple_impl<__i, _Head, _Tail...>::_M_head(__t); }
                                              ^
/usr/include/c++/7/tuple: At global scope:
/usr/include/c++/7/tuple:1306:17: error: 'std::size_t' has not been declared
   template<std::size_t __i, typename _Head, typename... _Tail>
                 ^~~~~~
/usr/include/c++/7/tuple:1308:36: error: '__i' was not declared in this scope
     __get_helper(const _Tuple_impl<__i, _Head, _Tail...>& __t) noexcept
                                    ^~~
/usr/include/c++/7/tuple:1308:36: note: suggested alternative: '__N'
     __get_helper(const _Tuple_impl<__i, _Head, _Tail...>& __t) noexcept
                                    ^~~
                                    __N
/usr/include/c++/7/tuple:1308:56: error: template argument 1 is invalid
     __get_helper(const _Tuple_impl<__i, _Head, _Tail...>& __t) noexcept
                                                        ^
/usr/include/c++/7/tuple: In function 'constexpr const _Head& std::__get_helper(const int&)':
/usr/include/c++/7/tuple:1309:26: error: '__i' was not declared in this scope
     { return _Tuple_impl<__i, _Head, _Tail...>::_M_head(__t); }
                          ^~~
/usr/include/c++/7/tuple:1309:26: note: suggested alternative: '__t'
     { return _Tuple_impl<__i, _Head, _Tail...>::_M_head(__t); }
                          ^~~
                          __t
/usr/include/c++/7/tuple:1309:46: error: template argument 1 is invalid
     { return _Tuple_impl<__i, _Head, _Tail...>::_M_head(__t); }
                                              ^
/usr/include/c++/7/tuple: At global scope:
/usr/include/c++/7/tuple:1312:17: error: 'std::size_t' has not been declared
   template<std::size_t __i, typename... _Elements>
                 ^~~~~~
/usr/include/c++/7/tuple:1313:15: error: '__tuple_element_t' does not name a type; did you mean 'tuple_element'?
     constexpr __tuple_element_t<__i, tuple<_Elements...>>&
               ^~~~~~~~~~~~~~~~~
               tuple_element
/usr/include/c++/7/tuple:1318:17: error: 'std::size_t' has not been declared
   template<std::size_t __i, typename... _Elements>
                 ^~~~~~
/usr/include/c++/7/tuple:1319:21: error: '__tuple_element_t' does not name a type; did you mean 'tuple_element'?
     constexpr const __tuple_element_t<__i, tuple<_Elements...>>&
                     ^~~~~~~~~~~~~~~~~
                     tuple_element
/usr/include/c++/7/tuple:1324:17: error: 'std::size_t' has not been declared
   template<std::size_t __i, typename... _Elements>
                 ^~~~~~
/usr/include/c++/7/tuple:1325:15: error: '__tuple_element_t' does not name a type; did you mean 'tuple_element'?
     constexpr __tuple_element_t<__i, tuple<_Elements...>>&&
               ^~~~~~~~~~~~~~~~~
               tuple_element
/usr/include/c++/7/tuple:1468:18: error: '__tuple_element_t' was not declared in this scope
    tuple<_Tp..., __tuple_element_t<_Idx, _Tuple>>,
                  ^~~~~~~~~~~~~~~~~
/usr/include/c++/7/tuple:1468:18: note: suggested alternative: 'tuple_element'
    tuple<_Tp..., __tuple_element_t<_Idx, _Tuple>>,
                  ^~~~~~~~~~~~~~~~~
                  tuple_element
/usr/include/c++/7/tuple:1468:42: error: template argument 2 is invalid
    tuple<_Tp..., __tuple_element_t<_Idx, _Tuple>>,
                                          ^~~~~~
/usr/include/c++/7/tuple:1468:48: error: wrong number of template arguments (2, should be 4)
    tuple<_Tp..., __tuple_element_t<_Idx, _Tuple>>,
                                                ^~
/usr/include/c++/7/tuple:1463:12: note: provided for 'template<long unsigned int <anonymous>, class, class, long unsigned int <anonymous> > struct std::__make_tuple_impl'
     struct __make_tuple_impl;
            ^~~~~~~~~~~~~~~~~
/usr/include/c++/7/tuple:1469:15: error: expected class-name before '>' token
    _Tuple, _Nm>
               ^
/usr/include/c++/7/tuple:1469:15: error: expected '{' before '>' token
/usr/include/c++/7/tuple:1472:17: error: 'std::size_t' has not been declared
   template<std::size_t _Nm, typename _Tuple, typename... _Tp>
                 ^~~~~~
/usr/include/c++/7/tuple:1473:30: error: '_Nm' was not declared in this scope
     struct __make_tuple_impl<_Nm, tuple<_Tp...>, _Tuple, _Nm>
                              ^~~
/usr/include/c++/7/tuple:1473:58: error: '_Nm' was not declared in this scope
     struct __make_tuple_impl<_Nm, tuple<_Tp...>, _Tuple, _Nm>
                                                          ^~~
/usr/include/c++/7/tuple:1473:61: error: template argument 1 is invalid
     struct __make_tuple_impl<_Nm, tuple<_Tp...>, _Tuple, _Nm>
                                                             ^
/usr/include/c++/7/tuple:1473:61: error: template argument 4 is invalid
/usr/include/c++/7/tuple:1545:32: error: 'std::size_t' has not been declared
   template<typename _Ret, std::size_t... _Is, typename _Tp, typename... _Tpls>
                                ^~~~~~
/usr/include/c++/7/tuple:1546:53: error: '_Is' was not declared in this scope
     struct __tuple_concater<_Ret, std::_Index_tuple<_Is...>, _Tp, _Tpls...>
                                                     ^~~
/usr/include/c++/7/tuple:1546:56: error: expected parameter pack before '...'
     struct __tuple_concater<_Ret, std::_Index_tuple<_Is...>, _Tp, _Tpls...>
                                                        ^~~
/usr/include/c++/7/tuple:1546:59: error: template argument 1 is invalid
     struct __tuple_concater<_Ret, std::_Index_tuple<_Is...>, _Tp, _Tpls...>
                                                           ^
/usr/include/c++/7/tuple:1546:75: error: template argument 2 is invalid
     struct __tuple_concater<_Ret, std::_Index_tuple<_Is...>, _Tp, _Tpls...>
                                                                           ^
/usr/include/c++/7/tuple:1645:39: error: 'std::size_t' has not been declared
     template<typename... _Args1, std::size_t... _Indexes1,
                                       ^~~~~~
/usr/include/c++/7/tuple:1646:39: error: 'std::size_t' has not been declared
              typename... _Args2, std::size_t... _Indexes2>
                                       ^~~~~~
/usr/include/c++/7/tuple:1650:18: error: '_Indexes1' was not declared in this scope
     _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>)
                  ^~~~~~~~~
/usr/include/c++/7/tuple:1650:27: error: expected parameter pack before '...'
     _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>)
                           ^~~
/usr/include/c++/7/tuple:1650:30: error: template argument 1 is invalid
     _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>)
                              ^
/usr/include/c++/7/tuple:1650:46: error: '_Indexes2' was not declared in this scope
     _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>)
                                              ^~~~~~~~~
/usr/include/c++/7/tuple:1650:55: error: expected parameter pack before '...'
     _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>)
                                                       ^~~
/usr/include/c++/7/tuple:1650:58: error: template argument 1 is invalid
     _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>)
                                                          ^
/usr/include/c++/7/tuple:1650:59: error: default argument for template parameter for class enclosing 'std::pair<_T1, _T2>::pair(std::tuple<_Args1 ...>&, std::tuple<_Args2 ...>&, int, int)'
     _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>)
                                                           ^
/usr/include/c++/7/tuple: In constructor 'std::pair<_T1, _T2>::pair(std::tuple<_Args1 ...>&, std::tuple<_Args2 ...>&, int, int)':
/usr/include/c++/7/tuple:1651:45: error: '_Indexes1' was not declared in this scope
       : first(std::forward<_Args1>(std::get<_Indexes1>(__tuple1))...),
                                             ^~~~~~~~~
/usr/include/c++/7/tuple:1652:46: error: '_Indexes2' was not declared in this scope
         second(std::forward<_Args2>(std::get<_Indexes2>(__tuple2))...)
                                              ^~~~~~~~~
In file included from /usr/include/c++/7/functional:58:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/bits/std_function.h: At global scope:
/usr/include/c++/7/bits/std_function.h:153:23: error: 'size_t' in namespace 'std' does not name a type
     static const std::size_t _M_max_size = sizeof(_Nocopy_types);
                       ^~~~~~
/usr/include/c++/7/bits/std_function.h:154:23: error: 'size_t' in namespace 'std' does not name a type
     static const std::size_t _M_max_align = __alignof__(_Nocopy_types);
                       ^~~~~~
/usr/include/c++/7/bits/std_function.h:162:26: error: '_M_max_size' was not declared in this scope
   && sizeof(_Functor) <= _M_max_size
                          ^~~~~~~~~~~
/usr/include/c++/7/bits/std_function.h:163:31: error: '_M_max_align' was not declared in this scope
   && __alignof__(_Functor) <= _M_max_align
                               ^~~~~~~~~~~~
/usr/include/c++/7/bits/std_function.h:163:31: note: suggested alternative: 'max_align_t'
   && __alignof__(_Functor) <= _M_max_align
                               ^~~~~~~~~~~~
                               max_align_t
/usr/include/c++/7/bits/std_function.h:164:7: error: '_M_max_align' was not declared in this scope
   && (_M_max_align % __alignof__(_Functor) == 0));
       ^~~~~~~~~~~~
/usr/include/c++/7/bits/std_function.h:164:7: note: suggested alternative: 'max_align_t'
   && (_M_max_align % __alignof__(_Functor) == 0));
       ^~~~~~~~~~~~
       max_align_t
In file included from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71:0,
                 from foo.cc:26:
/usr/include/c++/7/functional:326:17: error: 'std::size_t' has not been declared
   template<std::size_t __i, typename _Tuple>
                 ^~~~~~
/usr/include/c++/7/functional:328:29: error: '__i' was not declared in this scope
       = typename enable_if<(__i < tuple_size<_Tuple>::value),
                             ^~~
/usr/include/c++/7/functional:328:29: note: suggested alternative: '__N'
       = typename enable_if<(__i < tuple_size<_Tuple>::value),
                             ^~~
                             __N
/usr/include/c++/7/functional:329:21: error: '__i' was not declared in this scope
       tuple_element<__i, _Tuple>>::type::type;
                     ^~~
/usr/include/c++/7/functional:329:21: note: suggested alternative: '__N'
       tuple_element<__i, _Tuple>>::type::type;
                     ^~~
                     __N
/usr/include/c++/7/functional:329:26: error: template argument 1 is invalid
       tuple_element<__i, _Tuple>>::type::type;
                          ^~~~~~
/usr/include/c++/7/functional:329:32: error: template argument 2 is invalid
       tuple_element<__i, _Tuple>>::type::type;
                                ^~
/usr/include/c++/7/functional:329:36: error: '<expression error>::type' has not been declared
       tuple_element<__i, _Tuple>>::type::type;
                                    ^~~~
/usr/include/c++/7/functional:391:57: error: 'std::size_t' has not been declared
       template<typename _CVArg, typename... _Args, std::size_t... _Indexes>
                                                         ^~~~~~
/usr/include/c++/7/functional:394:28: error: '_Indexes' was not declared in this scope
         const _Index_tuple<_Indexes...>&) const volatile
                            ^~~~~~~~
/usr/include/c++/7/functional:394:28: note: suggested alternative: 'rindex'
         const _Index_tuple<_Indexes...>&) const volatile
                            ^~~~~~~~
                            rindex
/usr/include/c++/7/functional:394:36: error: expected parameter pack before '...'
         const _Index_tuple<_Indexes...>&) const volatile
                                    ^~~
/usr/include/c++/7/functional:394:39: error: template argument 1 is invalid
         const _Index_tuple<_Indexes...>&) const volatile
                                       ^
/usr/include/c++/7/functional: In member function 'decltype (__arg((declval<_Args>)()...)) std::_Mu<_Arg, true, false>::__call(_CVArg&, std::tuple<_Args2 ...>&, const int&) const volatile':
/usr/include/c++/7/functional:397:26: error: '_Indexes' was not declared in this scope
    return __arg(std::get<_Indexes>(std::move(__tuple))...);
                          ^~~~~~~~
/usr/include/c++/7/functional:397:26: note: suggested alternative: 'rindex'
    return __arg(std::get<_Indexes>(std::move(__tuple))...);
                          ^~~~~~~~
                          rindex
/usr/include/c++/7/functional:397:55: error: expansion pattern 'get<<expression error> >(std::move(__tuple))' contains no argument packs
    return __arg(std::get<_Indexes>(std::move(__tuple))...);
                                                       ^~~
/usr/include/c++/7/functional: At global scope:
/usr/include/c++/7/functional:411:2: error: '_Safe_tuple_element_t' does not name a type; did you mean 'tuple_element'?
  _Safe_tuple_element_t<(is_placeholder<_Arg>::value - 1), _Tuple>&&
  ^~~~~~~~~~~~~~~~~~~~~
  tuple_element
/usr/include/c++/7/functional:435:17: error: 'std::size_t' has not been declared
   template<std::size_t _Ind, typename... _Tp>
                 ^~~~~~
/usr/include/c++/7/functional:438:8: error: '__tuple_element_t' does not name a type; did you mean 'tuple_element'?
     -> __tuple_element_t<_Ind, tuple<_Tp...>> volatile&
        ^~~~~~~~~~~~~~~~~
        tuple_element
/usr/include/c++/7/functional:438:25: error: expected initializer before '<' token
     -> __tuple_element_t<_Ind, tuple<_Tp...>> volatile&
                         ^
/usr/include/c++/7/functional:442:17: error: 'std::size_t' has not been declared
   template<std::size_t _Ind, typename... _Tp>
                 ^~~~~~
/usr/include/c++/7/functional:445:8: error: '__tuple_element_t' does not name a type; did you mean 'tuple_element'?
     -> __tuple_element_t<_Ind, tuple<_Tp...>> const volatile&
        ^~~~~~~~~~~~~~~~~
        tuple_element
/usr/include/c++/7/functional:445:25: error: expected initializer before '<' token
     -> __tuple_element_t<_Ind, tuple<_Tp...>> const volatile&
                         ^
/usr/include/c++/7/functional:463:58: error: 'std::size_t' has not been declared
       template<typename _Result, typename... _Args, std::size_t... _Indexes>
                                                          ^~~~~~
/usr/include/c++/7/functional:465:48: error: '_Indexes' was not declared in this scope
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
                                                ^~~~~~~~
/usr/include/c++/7/functional:465:48: note: suggested alternative: 'rindex'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
                                                ^~~~~~~~
                                                rindex
/usr/include/c++/7/functional:465:56: error: expected parameter pack before '...'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
                                                        ^~~
/usr/include/c++/7/functional:465:59: error: template argument 1 is invalid
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
                                                           ^
/usr/include/c++/7/functional:473:58: error: 'std::size_t' has not been declared
       template<typename _Result, typename... _Args, std::size_t... _Indexes>
                                                          ^~~~~~
/usr/include/c++/7/functional:475:50: error: '_Indexes' was not declared in this scope
  __call_c(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
                                                  ^~~~~~~~
/usr/include/c++/7/functional:475:50: note: suggested alternative: 'rindex'
  __call_c(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
                                                  ^~~~~~~~
                                                  rindex
/usr/include/c++/7/functional:475:58: error: expected parameter pack before '...'
  __call_c(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
                                                          ^~~
/usr/include/c++/7/functional:475:61: error: template argument 1 is invalid
  __call_c(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
                                                             ^
/usr/include/c++/7/functional:483:58: error: 'std::size_t' has not been declared
       template<typename _Result, typename... _Args, std::size_t... _Indexes>
                                                          ^~~~~~
/usr/include/c++/7/functional:486:17: error: '_Indexes' was not declared in this scope
    _Index_tuple<_Indexes...>) volatile
                 ^~~~~~~~
/usr/include/c++/7/functional:486:17: note: suggested alternative: 'rindex'
    _Index_tuple<_Indexes...>) volatile
                 ^~~~~~~~
                 rindex
/usr/include/c++/7/functional:486:25: error: expected parameter pack before '...'
    _Index_tuple<_Indexes...>) volatile
                         ^~~
/usr/include/c++/7/functional:486:28: error: template argument 1 is invalid
    _Index_tuple<_Indexes...>) volatile
                            ^
/usr/include/c++/7/functional:494:58: error: 'std::size_t' has not been declared
       template<typename _Result, typename... _Args, std::size_t... _Indexes>
                                                          ^~~~~~
/usr/include/c++/7/functional:497:19: error: '_Indexes' was not declared in this scope
      _Index_tuple<_Indexes...>) const volatile
                   ^~~~~~~~
/usr/include/c++/7/functional:497:19: note: suggested alternative: 'rindex'
      _Index_tuple<_Indexes...>) const volatile
                   ^~~~~~~~
                   rindex
/usr/include/c++/7/functional:497:27: error: expected parameter pack before '...'
      _Index_tuple<_Indexes...>) const volatile
                           ^~~
/usr/include/c++/7/functional:497:30: error: template argument 1 is invalid
      _Index_tuple<_Indexes...>) const volatile
                              ^
/usr/include/c++/7/functional: In member function '_Result std::_Bind<_Functor(_Bound_args ...)>::__call(std::tuple<_Args2 ...>&&, int)':
/usr/include/c++/7/functional:468:36: error: '_Indexes' was not declared in this scope
        _Mu<_Bound_args>()(std::get<_Indexes>(_M_bound_args), __args)...
                                    ^~~~~~~~
/usr/include/c++/7/functional:468:36: note: suggested alternative: 'rindex'
        _Mu<_Bound_args>()(std::get<_Indexes>(_M_bound_args), __args)...
                                    ^~~~~~~~
                                    rindex
/usr/include/c++/7/functional: In member function '_Result std::_Bind<_Functor(_Bound_args ...)>::__call_c(std::tuple<_Args2 ...>&&, int) const':
/usr/include/c++/7/functional:478:36: error: '_Indexes' was not declared in this scope
        _Mu<_Bound_args>()(std::get<_Indexes>(_M_bound_args), __args)...
                                    ^~~~~~~~
/usr/include/c++/7/functional:478:36: note: suggested alternative: 'rindex'
        _Mu<_Bound_args>()(std::get<_Indexes>(_M_bound_args), __args)...
                                    ^~~~~~~~
                                    rindex
/usr/include/c++/7/functional: In member function '_Result std::_Bind<_Functor(_Bound_args ...)>::__call_v(std::tuple<_Args2 ...>&&, int) volatile':
/usr/include/c++/7/functional:489:27: error: '__volget' was not declared in this scope
        _Mu<_Bound_args>()(__volget<_Indexes>(_M_bound_args), __args)...
                           ^~~~~~~~
/usr/include/c++/7/functional:489:27: note: suggested alternative: '__void_t'
        _Mu<_Bound_args>()(__volget<_Indexes>(_M_bound_args), __args)...
                           ^~~~~~~~
                           __void_t
/usr/include/c++/7/functional:489:36: error: '_Indexes' was not declared in this scope
        _Mu<_Bound_args>()(__volget<_Indexes>(_M_bound_args), __args)...
                                    ^~~~~~~~
/usr/include/c++/7/functional:489:36: note: suggested alternative: 'rindex'
        _Mu<_Bound_args>()(__volget<_Indexes>(_M_bound_args), __args)...
                                    ^~~~~~~~
                                    rindex
/usr/include/c++/7/functional: In member function '_Result std::_Bind<_Functor(_Bound_args ...)>::__call_c_v(std::tuple<_Args2 ...>&&, int) const volatile':
/usr/include/c++/7/functional:500:27: error: '__volget' was not declared in this scope
        _Mu<_Bound_args>()(__volget<_Indexes>(_M_bound_args), __args)...
                           ^~~~~~~~
/usr/include/c++/7/functional:500:27: note: suggested alternative: '__void_t'
        _Mu<_Bound_args>()(__volget<_Indexes>(_M_bound_args), __args)...
                           ^~~~~~~~
                           __void_t
/usr/include/c++/7/functional:500:36: error: '_Indexes' was not declared in this scope
        _Mu<_Bound_args>()(__volget<_Indexes>(_M_bound_args), __args)...
                                    ^~~~~~~~
/usr/include/c++/7/functional:500:36: note: suggested alternative: 'rindex'
        _Mu<_Bound_args>()(__volget<_Indexes>(_M_bound_args), __args)...
                                    ^~~~~~~~
                                    rindex
/usr/include/c++/7/functional: At global scope:
/usr/include/c++/7/functional:619:55: error: 'std::size_t' has not been declared
       template<typename _Res, typename... _Args, std::size_t... _Indexes>
                                                       ^~~~~~
/usr/include/c++/7/functional:621:48: error: '_Indexes' was not declared in this scope
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
                                                ^~~~~~~~
/usr/include/c++/7/functional:621:48: note: suggested alternative: 'rindex'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
                                                ^~~~~~~~
                                                rindex
/usr/include/c++/7/functional:621:56: error: expected parameter pack before '...'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
                                                        ^~~
/usr/include/c++/7/functional:621:59: error: template argument 1 is invalid
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
                                                           ^
/usr/include/c++/7/functional:628:55: error: 'std::size_t' has not been declared
       template<typename _Res, typename... _Args, std::size_t... _Indexes>
                                                       ^~~~~~
/usr/include/c++/7/functional:630:48: error: '_Indexes' was not declared in this scope
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
                                                ^~~~~~~~
/usr/include/c++/7/functional:630:48: note: suggested alternative: 'rindex'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
                                                ^~~~~~~~
                                                rindex
/usr/include/c++/7/functional:630:56: error: expected parameter pack before '...'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
                                                        ^~~
/usr/include/c++/7/functional:630:59: error: template argument 1 is invalid
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
                                                           ^
/usr/include/c++/7/functional:637:55: error: 'std::size_t' has not been declared
       template<typename _Res, typename... _Args, std::size_t... _Indexes>
                                                       ^~~~~~
/usr/include/c++/7/functional:639:48: error: '_Indexes' was not declared in this scope
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
                                                ^~~~~~~~
/usr/include/c++/7/functional:639:48: note: suggested alternative: 'rindex'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
                                                ^~~~~~~~
                                                rindex
/usr/include/c++/7/functional:639:56: error: expected parameter pack before '...'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
                                                        ^~~
/usr/include/c++/7/functional:639:59: error: template argument 1 is invalid
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
                                                           ^
/usr/include/c++/7/functional:646:55: error: 'std::size_t' has not been declared
       template<typename _Res, typename... _Args, std::size_t... _Indexes>
                                                       ^~~~~~
/usr/include/c++/7/functional:648:48: error: '_Indexes' was not declared in this scope
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
                                                ^~~~~~~~
/usr/include/c++/7/functional:648:48: note: suggested alternative: 'rindex'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
                                                ^~~~~~~~
                                                rindex
/usr/include/c++/7/functional:648:56: error: expected parameter pack before '...'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
                                                        ^~~
/usr/include/c++/7/functional:648:59: error: template argument 1 is invalid
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
                                                           ^
/usr/include/c++/7/functional:655:55: error: 'std::size_t' has not been declared
       template<typename _Res, typename... _Args, std::size_t... _Indexes>
                                                       ^~~~~~
/usr/include/c++/7/functional:657:48: error: '_Indexes' was not declared in this scope
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) volatile
                                                ^~~~~~~~
/usr/include/c++/7/functional:657:48: note: suggested alternative: 'rindex'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) volatile
                                                ^~~~~~~~
                                                rindex
/usr/include/c++/7/functional:657:56: error: expected parameter pack before '...'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) volatile
                                                        ^~~
/usr/include/c++/7/functional:657:59: error: template argument 1 is invalid
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) volatile
                                                           ^
/usr/include/c++/7/functional:664:55: error: 'std::size_t' has not been declared
       template<typename _Res, typename... _Args, std::size_t... _Indexes>
                                                       ^~~~~~
/usr/include/c++/7/functional:666:48: error: '_Indexes' was not declared in this scope
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) volatile
                                                ^~~~~~~~
/usr/include/c++/7/functional:666:48: note: suggested alternative: 'rindex'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) volatile
                                                ^~~~~~~~
                                                rindex
/usr/include/c++/7/functional:666:56: error: expected parameter pack before '...'
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) volatile
                                                        ^~~
/usr/include/c++/7/functional:666:59: error: template argument 1 is invalid
  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) volatile
                                                           ^
/usr/include/c++/7/functional:673:55: error: 'std::size_t' has not been declared
       template<typename _Res, typename... _Args, std::size_t... _Indexes>
                                                       ^~~~~~
/usr/include/c++/7/functional:676:22: error: '_Indexes' was not declared in this scope
         _Index_tuple<_Indexes...>) const volatile
                      ^~~~~~~~
/usr/include/c++/7/functional:676:22: note: suggested alternative: 'rindex'
         _Index_tuple<_Indexes...>) const volatile
                      ^~~~~~~~
                      rindex
/usr/include/c++/7/functional:676:30: error: expected parameter pack before '...'
         _Index_tuple<_Indexes...>) const volatile
                              ^~~
/usr/include/c++/7/functional:676:33: error: template argument 1 is invalid
         _Index_tuple<_Indexes...>) const volatile
                                 ^
/usr/include/c++/7/functional:683:55: error: 'std::size_t' has not been declared
       template<typename _Res, typename... _Args, std::size_t... _Indexes>
                                                       ^~~~~~
/usr/include/c++/7/functional:686:22: error: '_Indexes' was not declared in this scope
         _Index_tuple<_Indexes...>) const volatile
                      ^~~~~~~~
/usr/include/c++/7/functional:686:22: note: suggested alternative: 'rindex'
         _Index_tuple<_Indexes...>) const volatile
                      ^~~~~~~~
                      rindex
/usr/include/c++/7/functional:686:30: error: expected parameter pack before '...'
         _Index_tuple<_Indexes...>) const volatile
                              ^~~
/usr/include/c++/7/functional:686:33: error: template argument 1 is invalid
         _Index_tuple<_Indexes...>) const volatile
                                 ^
/usr/include/c++/7/functional: In member function 'std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__disable_if_void<_Res> std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__call(std::tuple<_Args2 ...>&&, int)':
/usr/include/c++/7/functional:624:19: error: '_Indexes' was not declared in this scope
         (std::get<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
/usr/include/c++/7/functional:624:19: note: suggested alternative: 'rindex'
         (std::get<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
                   rindex
/usr/include/c++/7/functional: In member function 'std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__enable_if_void<_Res> std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__call(std::tuple<_Args2 ...>&&, int)':
/usr/include/c++/7/functional:633:19: error: '_Indexes' was not declared in this scope
         (std::get<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
/usr/include/c++/7/functional:633:19: note: suggested alternative: 'rindex'
         (std::get<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
                   rindex
/usr/include/c++/7/functional: In member function 'std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__disable_if_void<_Res> std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__call(std::tuple<_Args2 ...>&&, int) const':
/usr/include/c++/7/functional:642:19: error: '_Indexes' was not declared in this scope
         (std::get<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
/usr/include/c++/7/functional:642:19: note: suggested alternative: 'rindex'
         (std::get<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
                   rindex
/usr/include/c++/7/functional: In member function 'std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__enable_if_void<_Res> std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__call(std::tuple<_Args2 ...>&&, int) const':
/usr/include/c++/7/functional:651:19: error: '_Indexes' was not declared in this scope
         (std::get<_Indexes>(_M_bound_args),  __args)...);
                   ^~~~~~~~
/usr/include/c++/7/functional:651:19: note: suggested alternative: 'rindex'
         (std::get<_Indexes>(_M_bound_args),  __args)...);
                   ^~~~~~~~
                   rindex
/usr/include/c++/7/functional: In member function 'std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__disable_if_void<_Res> std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__call(std::tuple<_Args2 ...>&&, int) volatile':
/usr/include/c++/7/functional:660:10: error: '__volget' was not declared in this scope
         (__volget<_Indexes>(_M_bound_args), __args)...);
          ^~~~~~~~
/usr/include/c++/7/functional:660:10: note: suggested alternative: '__void_t'
         (__volget<_Indexes>(_M_bound_args), __args)...);
          ^~~~~~~~
          __void_t
/usr/include/c++/7/functional:660:19: error: '_Indexes' was not declared in this scope
         (__volget<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
/usr/include/c++/7/functional:660:19: note: suggested alternative: 'rindex'
         (__volget<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
                   rindex
/usr/include/c++/7/functional: In member function 'std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__enable_if_void<_Res> std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__call(std::tuple<_Args2 ...>&&, int) volatile':
/usr/include/c++/7/functional:669:10: error: '__volget' was not declared in this scope
         (__volget<_Indexes>(_M_bound_args), __args)...);
          ^~~~~~~~
/usr/include/c++/7/functional:669:10: note: suggested alternative: '__void_t'
         (__volget<_Indexes>(_M_bound_args), __args)...);
          ^~~~~~~~
          __void_t
/usr/include/c++/7/functional:669:19: error: '_Indexes' was not declared in this scope
         (__volget<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
/usr/include/c++/7/functional:669:19: note: suggested alternative: 'rindex'
         (__volget<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
                   rindex
/usr/include/c++/7/functional: In member function 'std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__disable_if_void<_Res> std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__call(std::tuple<_Args2 ...>&&, int) const volatile':
/usr/include/c++/7/functional:679:10: error: '__volget' was not declared in this scope
         (__volget<_Indexes>(_M_bound_args), __args)...);
          ^~~~~~~~
/usr/include/c++/7/functional:679:10: note: suggested alternative: '__void_t'
         (__volget<_Indexes>(_M_bound_args), __args)...);
          ^~~~~~~~
          __void_t
/usr/include/c++/7/functional:679:19: error: '_Indexes' was not declared in this scope
         (__volget<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
/usr/include/c++/7/functional:679:19: note: suggested alternative: 'rindex'
         (__volget<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
                   rindex
/usr/include/c++/7/functional: In member function 'std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__enable_if_void<_Res> std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__call(std::tuple<_Args2 ...>&&, int) const volatile':
/usr/include/c++/7/functional:689:10: error: '__volget' was not declared in this scope
         (__volget<_Indexes>(_M_bound_args), __args)...);
          ^~~~~~~~
/usr/include/c++/7/functional:689:10: note: suggested alternative: '__void_t'
         (__volget<_Indexes>(_M_bound_args), __args)...);
          ^~~~~~~~
          __void_t
/usr/include/c++/7/functional:689:19: error: '_Indexes' was not declared in this scope
         (__volget<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
/usr/include/c++/7/functional:689:19: note: suggested alternative: 'rindex'
         (__volget<_Indexes>(_M_bound_args), __args)...);
                   ^~~~~~~~
                   rindex
In file included from /usr/include/c++/7/bits/locale_facets_nonio.h:2013:0,
                 from /usr/include/c++/7/locale:41,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from foo.cc:26:
/usr/include/c++/7/bits/locale_facets_nonio.tcc: In member function 'void std::__moneypunct_cache<_CharT, _Intl>::_M_cache(const std::locale&)':
/usr/include/c++/7/bits/locale_facets_nonio.tcc:85:27: error: 'const string {aka const class std::__cxx11::basic_string<char>}' has no member named 'size'
    _M_grouping_size = __g.size();
                           ^~~~
/usr/include/c++/7/bits/locale_facets_nonio.tcc:87:8: error: 'const string {aka const class std::__cxx11::basic_string<char>}' has no member named 'copy'
    __g.copy(__grouping, _M_grouping_size);
        ^~~~
/usr/include/c++/7/bits/locale_facets_nonio.tcc: In member function '_InIter std::__cxx11::money_get<_CharT, _InIter>::_M_extract(std::__cxx11::money_get<_CharT, _InIter>::iter_type, std::__cxx11::money_get<_CharT, _InIter>::iter_type, std::ios_base&, std::ios_base::iostate&, std::__cxx11::string&) const':
/usr/include/c++/7/bits/locale_facets_nonio.tcc:162:19: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'reserve'
    __grouping_tmp.reserve(32);
                   ^~~~~~~
/usr/include/c++/7/bits/locale_facets_nonio.tcc:174:8: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'reserve'
  __res.reserve(32);
        ^~~~~~~
/usr/include/c++/7/bits/locale_facets_nonio.tcc:310:16: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'size'
      if (__res.size() > 1)
                ^~~~
/usr/include/c++/7/bits/locale_facets_nonio.tcc:312:35: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'find_first_not_of'
   const size_type __first = __res.find_first_not_of('0');
                                   ^~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/locale_facets_nonio.tcc:313:48: error: 'npos' is not a member of 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}'
   const bool __only_zeros = __first == string::npos;
                                                ^~~~
/usr/include/c++/7/bits/locale_facets_nonio.tcc:315:41: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'size'
     __res.erase(0, __only_zeros ? __res.size() - 1 : __first);
                                         ^~~~
/usr/include/c++/7/bits/locale_facets_nonio.tcc:319:29: error: no match for 'operator[]' (operand types are 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}' and 'int')
      if (__negative && __res[0] != '0')
                             ^
/usr/include/c++/7/bits/locale_facets_nonio.tcc:323:25: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'size'
      if (__grouping_tmp.size())
                         ^~~~
/usr/include/c++/7/bits/locale_facets_nonio.tcc: In member function 'virtual _InIter std::__cxx11::money_get<_CharT, _InIter>::do_get(std::__cxx11::money_get<_CharT, _InIter>::iter_type, std::__cxx11::money_get<_CharT, _InIter>::iter_type, bool, std::ios_base&, std::ios_base::iostate&, std::__cxx11::money_get<_CharT, _InIter>::string_type&) const':
/usr/include/c++/7/bits/locale_facets_nonio.tcc:386:32: error: invalid combination of multiple type-specifiers
       typedef typename string::size_type                  size_type;
                                ^~~~~~~~~
/usr/include/c++/7/bits/locale_facets_nonio.tcc:394:37: error: 'std::__cxx11::string {aka class std::__cxx11::basic_string<char>}' has no member named 'size'
       const size_type __len = __str.size();
                                     ^~~~
In file included from /usr/include/c++/7/bits/stl_list.h:63:0,
                 from /usr/include/c++/7/list:63,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:79,
                 from foo.cc:26:
/usr/include/c++/7/bits/allocated_ptr.h: At global scope:
/usr/include/c++/7/bits/allocated_ptr.h:78:31: error: declaration of 'operator=' as non-function
       operator=(std::nullptr_t) noexcept
                               ^
/usr/include/c++/7/bits/allocated_ptr.h:78:15: error: expected ';' at end of member declaration
       operator=(std::nullptr_t) noexcept
               ^
/usr/include/c++/7/bits/allocated_ptr.h:78:31: error: invalid use of '::'
       operator=(std::nullptr_t) noexcept
                               ^
/usr/include/c++/7/bits/allocated_ptr.h:78:31: error: expected ';' at end of member declaration
/usr/include/c++/7/bits/allocated_ptr.h:78:33: error: expected unqualified-id before 'noexcept'
       operator=(std::nullptr_t) noexcept
                                 ^~~~~~~~
In file included from /usr/include/c++/7/bits/stl_list.h:64:0,
                 from /usr/include/c++/7/list:63,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:79,
                 from foo.cc:26:
/usr/include/c++/7/ext/aligned_buffer.h:59:42: error: invalid use of '::'
       __aligned_membuf(std::nullptr_t) { }
                                          ^
/usr/include/c++/7/ext/aligned_buffer.h:59:42: error: expected ';' at end of member declaration
/usr/include/c++/7/ext/aligned_buffer.h:94:42: error: invalid use of '::'
       __aligned_buffer(std::nullptr_t) { }
                                          ^
/usr/include/c++/7/ext/aligned_buffer.h:94:42: error: expected ';' at end of member declaration
In file included from /usr/include/c++/7/forward_list:38:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:104,
                 from foo.cc:26:
/usr/include/c++/7/bits/forward_list.h:427:20: error: 'size_t' in namespace 'std' does not name a type
       typedef std::size_t                                  size_type;
                    ^~~~~~
/usr/include/c++/7/bits/forward_list.h:428:20: error: 'ptrdiff_t' in namespace 'std' does not name a type
       typedef std::ptrdiff_t                               difference_type;
                    ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.h:485:30: error: expected ')' before '__n'
       forward_list(size_type __n, const _Alloc& __al = _Alloc())
                              ^~~
/usr/include/c++/7/bits/forward_list.h:498:30: error: expected ')' before '__n'
       forward_list(size_type __n, const _Tp& __value,
                              ^~~
/usr/include/c++/7/bits/forward_list.h:643:14: error: 'size_type' has not been declared
       assign(size_type __n, const _Tp& __val)
              ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.h:755:7: error: 'size_type' does not name a type; did you mean 'true_type'?
       size_type
       ^~~~~~~~~
       true_type
/usr/include/c++/7/bits/forward_list.h:906:42: error: 'size_type' has not been declared
       insert_after(const_iterator __pos, size_type __n, const _Tp& __val);
                                          ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.h:1028:14: error: 'size_type' has not been declared
       resize(size_type __sz);
              ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.h:1043:14: error: 'size_type' has not been declared
       resize(size_type __sz, const value_type& __val);
              ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.h:1259:26: error: 'size_type' has not been declared
       _M_fill_initialize(size_type __n, const value_type& __value);
                          ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.h:1268:29: error: 'size_type' has not been declared
       _M_default_initialize(size_type __n);
                             ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.h:1272:53: error: 'size_type' has not been declared
       _M_default_insert_after(const_iterator __pos, size_type __n);
                                                     ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.h:1332:19: error: 'size_type' has not been declared
       _M_assign_n(size_type __n, const _Tp& __val, true_type)
                   ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.h:1352:19: error: 'size_type' has not been declared
       _M_assign_n(size_type __n, const _Tp& __val, false_type)
                   ^~~~~~~~~
In file included from /usr/include/c++/7/forward_list:40:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:104,
                 from foo.cc:26:
/usr/include/c++/7/bits/forward_list.tcc:118:24: error: variable or field '_M_fill_initialize' declared void
     _M_fill_initialize(size_type __n, const value_type& __value)
                        ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.tcc:118:24: error: 'size_type' was not declared in this scope
/usr/include/c++/7/bits/forward_list.tcc:118:24: note: suggested alternative: 'true_type'
     _M_fill_initialize(size_type __n, const value_type& __value)
                        ^~~~~~~~~
                        true_type
/usr/include/c++/7/bits/forward_list.tcc:118:39: error: expected primary-expression before 'const'
     _M_fill_initialize(size_type __n, const value_type& __value)
                                       ^~~~~
/usr/include/c++/7/bits/forward_list.tcc:131:27: error: variable or field '_M_default_initialize' declared void
     _M_default_initialize(size_type __n)
                           ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.tcc:131:27: error: 'size_type' was not declared in this scope
/usr/include/c++/7/bits/forward_list.tcc:131:27: note: suggested alternative: 'true_type'
     _M_default_initialize(size_type __n)
                           ^~~~~~~~~
                           true_type
/usr/include/c++/7/bits/forward_list.tcc:168:51: error: 'size_type' has not been declared
     _M_default_insert_after(const_iterator __pos, size_type __n)
                                                   ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.tcc:186:12: error: variable or field 'resize' declared void
     resize(size_type __sz)
            ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.tcc:186:12: error: 'size_type' was not declared in this scope
/usr/include/c++/7/bits/forward_list.tcc:186:12: note: suggested alternative: 'true_type'
     resize(size_type __sz)
            ^~~~~~~~~
            true_type
/usr/include/c++/7/bits/forward_list.tcc:205:12: error: variable or field 'resize' declared void
     resize(size_type __sz, const value_type& __val)
            ^~~~~~~~~
/usr/include/c++/7/bits/forward_list.tcc:205:12: error: 'size_type' was not declared in this scope
/usr/include/c++/7/bits/forward_list.tcc:205:12: note: suggested alternative: 'true_type'
     resize(size_type __sz, const value_type& __val)
            ^~~~~~~~~
            true_type
/usr/include/c++/7/bits/forward_list.tcc:205:28: error: expected primary-expression before 'const'
     resize(size_type __sz, const value_type& __val)
                            ^~~~~
/usr/include/c++/7/bits/forward_list.tcc:260:40: error: 'size_type' has not been declared
     insert_after(const_iterator __pos, size_type __n, const _Tp& __val)
                                        ^~~~~~~~~
In file included from /usr/include/c++/7/future:39:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:105,
                 from foo.cc:26:
/usr/include/c++/7/thread:226:11: error: '__tuple_element_t' does not name a type; did you mean 'tuple_element'?
    static __tuple_element_t<_Index, _Tuple>&&
           ^~~~~~~~~~~~~~~~~
           tuple_element
/usr/include/c++/7/thread:231:34: note: invalid template non-type parameter
    _M_invoke(_Index_tuple<_Ind...>)
                                  ^
/usr/include/c++/7/thread:232:36: error: '_S_declval' was not declared in this scope
    noexcept(noexcept(std::__invoke(_S_declval<_Ind>()...)))
                                    ^~~~~~~~~~
/usr/include/c++/7/thread:232:36: note: suggested alternative: 'declval'
    noexcept(noexcept(std::__invoke(_S_declval<_Ind>()...)))
                                    ^~~~~~~~~~
                                    declval
/usr/include/c++/7/thread:232:53: error: expected primary-expression before ')' token
    noexcept(noexcept(std::__invoke(_S_declval<_Ind>()...)))
                                                     ^
/usr/include/c++/7/thread:233:30: error: '_S_declval' was not declared in this scope
    -> decltype(std::__invoke(_S_declval<_Ind>()...))
                              ^~~~~~~~~~
/usr/include/c++/7/thread:233:30: note: suggested alternative: 'declval'
    -> decltype(std::__invoke(_S_declval<_Ind>()...))
                              ^~~~~~~~~~
                              declval
/usr/include/c++/7/thread:233:30: error: '_S_declval' was not declared in this scope
/usr/include/c++/7/thread:233:30: note: suggested alternative: 'declval'
    -> decltype(std::__invoke(_S_declval<_Ind>()...))
                              ^~~~~~~~~~
                              declval
/usr/include/c++/7/thread:233:47: error: expected primary-expression before ')' token
    -> decltype(std::__invoke(_S_declval<_Ind>()...))
                                               ^
In file included from /usr/include/c++/7/bits/basic_string.h:40:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/alloc_traits.h: In instantiation of 'struct __gnu_cxx::__alloc_traits<std::allocator<double> >':
/usr/include/c++/7/bits/stl_vector.h:77:21:   required from 'struct std::_Vector_base<double, std::allocator<double> >'
/usr/include/c++/7/bits/stl_vector.h:216:11:   required from 'class std::vector<double>'
/usr/include/c++/7/bits/random.h:5224:22:   required from here
/usr/include/c++/7/ext/alloc_traits.h:61:53: error: no type named 'size_type' in 'struct std::allocator_traits<std::allocator<double> >'
     typedef typename _Base_type::size_type          size_type;
                                                     ^~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:62:53: error: no type named 'difference_type' in 'struct std::allocator_traits<std::allocator<double> >'
     typedef typename _Base_type::difference_type    difference_type;
                                                     ^~~~~~~~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:70:23: error: no members matching '__gnu_cxx::__alloc_traits<std::allocator<double> >::_Base_type {aka std::allocator_traits<std::allocator<double> >}::max_size' in '__gnu_cxx::__alloc_traits<std::allocator<double> >::_Base_type {aka struct std::allocator_traits<std::allocator<double> >}'
     using _Base_type::max_size;
                       ^~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h: In instantiation of 'struct __gnu_cxx::__alloc_traits<std::allocator<unsigned int> >':
/usr/include/c++/7/bits/stl_vector.h:77:21:   required from 'struct std::_Vector_base<unsigned int, std::allocator<unsigned int> >'
/usr/include/c++/7/bits/stl_vector.h:216:11:   required from 'class std::vector<unsigned int>'
/usr/include/c++/7/bits/random.h:5995:30:   required from here
/usr/include/c++/7/ext/alloc_traits.h:61:53: error: no type named 'size_type' in 'struct std::allocator_traits<std::allocator<unsigned int> >'
     typedef typename _Base_type::size_type          size_type;
                                                     ^~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:62:53: error: no type named 'difference_type' in 'struct std::allocator_traits<std::allocator<unsigned int> >'
     typedef typename _Base_type::difference_type    difference_type;
                                                     ^~~~~~~~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:70:23: error: no members matching '__gnu_cxx::__alloc_traits<std::allocator<unsigned int> >::_Base_type {aka std::allocator_traits<std::allocator<unsigned int> >}::max_size' in '__gnu_cxx::__alloc_traits<std::allocator<unsigned int> >::_Base_type {aka struct std::allocator_traits<std::allocator<unsigned int> >}'
     using _Base_type::max_size;
                       ^~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h: In instantiation of 'struct __gnu_cxx::__alloc_traits<std::allocator<long unsigned int> >':
/usr/include/c++/7/bits/stl_vector.h:77:21:   required from 'struct std::_Vector_base<long unsigned int, std::allocator<long unsigned int> >'
/usr/include/c++/7/bits/stl_vector.h:216:11:   required from 'class std::vector<long unsigned int>'
/usr/include/c++/7/bits/regex_automaton.h:213:31:   required from here
/usr/include/c++/7/ext/alloc_traits.h:61:53: error: no type named 'size_type' in 'struct std::allocator_traits<std::allocator<long unsigned int> >'
     typedef typename _Base_type::size_type          size_type;
                                                     ^~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:62:53: error: no type named 'difference_type' in 'struct std::allocator_traits<std::allocator<long unsigned int> >'
     typedef typename _Base_type::difference_type    difference_type;
                                                     ^~~~~~~~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:70:23: error: no members matching '__gnu_cxx::__alloc_traits<std::allocator<long unsigned int> >::_Base_type {aka std::allocator_traits<std::allocator<long unsigned int> >}::max_size' in '__gnu_cxx::__alloc_traits<std::allocator<long unsigned int> >::_Base_type {aka struct std::allocator_traits<std::allocator<long unsigned int> >}'
     using _Base_type::max_size;
                       ^~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h: In instantiation of 'struct __gnu_cxx::__alloc_traits<std::allocator<long int> >':
/usr/include/c++/7/bits/stl_deque.h:464:21:   required from 'class std::_Deque_base<long int, std::allocator<long int> >'
/usr/include/c++/7/bits/stl_deque.h:831:11:   required from 'class std::deque<long int, std::allocator<long int> >'
/usr/include/c++/7/bits/stl_stack.h:126:47:   required from 'class std::stack<long int>'
/usr/include/c++/7/bits/regex_automaton.tcc:199:14:   required from here
/usr/include/c++/7/ext/alloc_traits.h:61:53: error: no type named 'size_type' in 'struct std::allocator_traits<std::allocator<long int> >'
     typedef typename _Base_type::size_type          size_type;
                                                     ^~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:62:53: error: no type named 'difference_type' in 'struct std::allocator_traits<std::allocator<long int> >'
     typedef typename _Base_type::difference_type    difference_type;
                                                     ^~~~~~~~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:70:23: error: no members matching '__gnu_cxx::__alloc_traits<std::allocator<long int> >::_Base_type {aka std::allocator_traits<std::allocator<long int> >}::max_size' in '__gnu_cxx::__alloc_traits<std::allocator<long int> >::_Base_type {aka struct std::allocator_traits<std::allocator<long int> >}'
     using _Base_type::max_size;
                       ^~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h: In instantiation of 'struct __gnu_cxx::__alloc_traits<std::allocator<std::pair<const long int, long int> > >':
/usr/include/c++/7/bits/stl_map.h:139:28:   required from 'class std::map<long int, long int>'
/usr/include/c++/7/bits/regex_automaton.tcc:207:11:   required from here
/usr/include/c++/7/ext/alloc_traits.h:61:53: error: no type named 'size_type' in 'struct std::allocator_traits<std::allocator<std::pair<const long int, long int> > >'
     typedef typename _Base_type::size_type          size_type;
                                                     ^~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:62:53: error: no type named 'difference_type' in 'struct std::allocator_traits<std::allocator<std::pair<const long int, long int> > >'
     typedef typename _Base_type::difference_type    difference_type;
                                                     ^~~~~~~~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:70:23: error: no members matching '__gnu_cxx::__alloc_traits<std::allocator<std::pair<const long int, long int> > >::_Base_type {aka std::allocator_traits<std::allocator<std::pair<const long int, long int> > >}::max_size' in '__gnu_cxx::__alloc_traits<std::allocator<std::pair<const long int, long int> > >::_Base_type {aka struct std::allocator_traits<std::allocator<std::pair<const long int, long int> > >}'
     using _Base_type::max_size;
                       ^~~~~~~~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from foo.cc:26:
/usr/include/c++/7/bits/regex.h:176:19: error: 'size_t' in namespace 'std' does not name a type
       static std::size_t
                   ^~~~~~
/usr/include/c++/7/bits/regex.h:460:45: error: 'std::size_t' has not been declared
       basic_regex(const _Ch_type* __p, std::size_t __len,
                                             ^~~~~~
/usr/include/c++/7/bits/regex.h:639:40: error: 'std::size_t' has not been declared
       assign(const _Ch_type* __p, std::size_t __len, flag_type __flags)
                                        ^~~~~~
/usr/include/c++/7/bits/regex.h:2489:20: error: 'ptrdiff_t' in namespace 'std' does not name a type
       typedef std::ptrdiff_t                     difference_type;
                    ^~~~~~~~~
/usr/include/c++/7/bits/regex.h:2609:20: error: 'ptrdiff_t' in namespace 'std' does not name a type
       typedef std::ptrdiff_t                    difference_type;
                    ^~~~~~~~~
/usr/include/c++/7/bits/regex.h:2694:21: error: 'std::size_t' has not been declared
       template<std::size_t _Nm>
                     ^~~~~~
/usr/include/c++/7/bits/regex.h:2697:35: error: '_Nm' was not declared in this scope
         const int (&__submatches)[_Nm],
                                   ^~~
/usr/include/c++/7/bits/regex.h:2697:39: error: expected ')' before ',' token
         const int (&__submatches)[_Nm],
                                       ^
/usr/include/c++/7/bits/regex.h:2697:39: error: expected ';' before ',' token
/usr/include/c++/7/bits/regex.h:2717:22: error: 'std::size_t' has not been declared
       template <std::size_t _Nm>
                      ^~~~~~
/usr/include/c++/7/bits/regex.h:2719:23: error: '_Nm' was not declared in this scope
         const int (&)[_Nm],
                       ^~~
/usr/include/c++/7/bits/regex.h:2719:27: error: expected ')' before ',' token
         const int (&)[_Nm],
                           ^
/usr/include/c++/7/bits/regex.h:2719:27: error: expected ';' before ',' token
/usr/include/c++/7/bits/regex.h:2718:2: error: 'template<class _Bi_iter, class _Ch_type, class _Rx_traits> template<<declaration error> > std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>::regex_token_iterator(...)' cannot be overloaded
  regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&,
  ^~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/regex.h:2695:2: error: with 'template<class _Bi_iter, class _Ch_type, class _Rx_traits> template<<declaration error> > std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>::regex_token_iterator(...)'
  regex_token_iterator(_Bi_iter __a, _Bi_iter __b,
  ^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/7/bits/basic_string.h:40:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/ext/alloc_traits.h: In instantiation of 'struct __gnu_cxx::__alloc_traits<std::allocator<int> >':
/usr/include/c++/7/bits/stl_vector.h:77:21:   required from 'struct std::_Vector_base<int, std::allocator<int> >'
/usr/include/c++/7/bits/stl_vector.h:216:11:   required from 'class std::vector<int>'
/usr/include/c++/7/bits/regex.h:2815:25:   required from here
/usr/include/c++/7/ext/alloc_traits.h:61:53: error: no type named 'size_type' in 'struct std::allocator_traits<std::allocator<int> >'
     typedef typename _Base_type::size_type          size_type;
                                                     ^~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:62:53: error: no type named 'difference_type' in 'struct std::allocator_traits<std::allocator<int> >'
     typedef typename _Base_type::difference_type    difference_type;
                                                     ^~~~~~~~~~~~~~~
/usr/include/c++/7/ext/alloc_traits.h:70:23: error: no members matching '__gnu_cxx::__alloc_traits<std::allocator<int> >::_Base_type {aka std::allocator_traits<std::allocator<int> >}::max_size' in '__gnu_cxx::__alloc_traits<std::allocator<int> >::_Base_type {aka struct std::allocator_traits<std::allocator<int> >}'
     using _Base_type::max_size;
                       ^~~~~~~~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from foo.cc:26:
/usr/include/c++/7/bits/regex.h:2817:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t       _M_n;
            ^~~~~~
/usr/include/c++/7/bits/regex.h: In constructor 'std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>::regex_token_iterator()':
/usr/include/c++/7/bits/regex.h:2623:48: error: class 'std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>' does not have any field named '_M_n'
       : _M_position(), _M_subs(), _M_suffix(), _M_n(0), _M_result(nullptr),
                                                ^~~~
/usr/include/c++/7/bits/regex.h: In constructor 'std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>::regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&, int, std::regex_constants::match_flag_type)':
/usr/include/c++/7/bits/regex.h:2648:67: error: class 'std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>' does not have any field named '_M_n'
       : _M_position(__a, __b, __re, __m), _M_subs(1, __submatch), _M_n(0)
                                                                   ^~~~
/usr/include/c++/7/bits/regex.h: In constructor 'std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>::regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&, const std::vector<int>&, std::regex_constants::match_flag_type)':
/usr/include/c++/7/bits/regex.h:2665:66: error: class 'std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>' does not have any field named '_M_n'
       : _M_position(__a, __b, __re, __m), _M_subs(__submatches), _M_n(0)
                                                                  ^~~~
/usr/include/c++/7/bits/regex.h: In constructor 'std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>::regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&, std::initializer_list<int>, std::regex_constants::match_flag_type)':
/usr/include/c++/7/bits/regex.h:2682:66: error: class 'std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>' does not have any field named '_M_n'
       : _M_position(__a, __b, __re, __m), _M_subs(__submatches), _M_n(0)
                                                                  ^~~~
/usr/include/c++/7/bits/regex.h: In copy constructor 'std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>::regex_token_iterator(const std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>&)':
/usr/include/c++/7/bits/regex.h:2729:35: error: class 'std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>' does not have any field named '_M_n'
       _M_suffix(__rhs._M_suffix), _M_n(__rhs._M_n), _M_has_m1(__rhs._M_has_m1)
                                   ^~~~
/usr/include/c++/7/bits/regex.h: In member function 'const value_type& std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>::_M_current_match() const':
/usr/include/c++/7/bits/regex.h:2792:14: error: '_M_n' was not declared in this scope
  if (_M_subs[_M_n] == -1)
              ^~~~
/usr/include/c++/7/bits/regex.h:2792:14: note: suggested alternative: '_Tan'
  if (_M_subs[_M_n] == -1)
              ^~~~
              _Tan
In file included from /usr/include/c++/7/bits/regex.h:2844:0,
                 from /usr/include/c++/7/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from foo.cc:26:
/usr/include/c++/7/bits/regex.tcc: In member function 'std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>& std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>::operator=(const std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>&)':
/usr/include/c++/7/bits/regex.tcc:576:7: error: '_M_n' was not declared in this scope
       _M_n = __rhs._M_n;
       ^~~~
/usr/include/c++/7/bits/regex.tcc:576:7: note: suggested alternative: '_Tan'
       _M_n = __rhs._M_n;
       ^~~~
       _Tan
/usr/include/c++/7/bits/regex.tcc: In member function 'bool std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>::operator==(const std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>&) const':
/usr/include/c++/7/bits/regex.tcc:599:5: error: '_M_n' was not declared in this scope
  && _M_n == __rhs._M_n
     ^~~~
/usr/include/c++/7/bits/regex.tcc:599:5: note: suggested alternative: '_Tan'
  && _M_n == __rhs._M_n
     ^~~~
     _Tan
/usr/include/c++/7/bits/regex.tcc: In member function 'std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>& std::__cxx11::regex_token_iterator<_Bi_iter, _Ch_type, _Rx_traits>::operator++()':
/usr/include/c++/7/bits/regex.tcc:613:16: error: '_M_n' was not declared in this scope
       else if (_M_n + 1 < _M_subs.size())
                ^~~~
/usr/include/c++/7/bits/regex.tcc:613:16: note: suggested alternative: '_Tan'
       else if (_M_n + 1 < _M_subs.size())
                ^~~~
                _Tan
In file included from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:111:0,
                 from foo.cc:26:
/usr/include/c++/7/scoped_allocator: At global scope:
/usr/include/c++/7/scoped_allocator:230:21: error: 'std::size_t' has not been declared
       template<std::size_t... _Indices>
                     ^~~~~~
/usr/include/c++/7/scoped_allocator:233:47: error: '_Indices' was not declared in this scope
                                  _Index_tuple<_Indices...>)
                                               ^~~~~~~~
/usr/include/c++/7/scoped_allocator:233:47: note: suggested alternative: '_ISdigit'
                                  _Index_tuple<_Indices...>)
                                               ^~~~~~~~
                                               _ISdigit
/usr/include/c++/7/scoped_allocator:233:55: error: expected parameter pack before '...'
                                  _Index_tuple<_Indices...>)
                                                       ^~~
/usr/include/c++/7/scoped_allocator:233:58: error: template argument 1 is invalid
                                  _Index_tuple<_Indices...>)
                                                          ^
/usr/include/c++/7/scoped_allocator:440:53: note: invalid template non-type parameter
  _M_construct_p(__uses_alloc1_, _Index_tuple<_Ind...>,
                                                     ^
/usr/include/c++/7/scoped_allocator:450:53: note: invalid template non-type parameter
  _M_construct_p(__uses_alloc2_, _Index_tuple<_Ind...>,
                                                     ^
/usr/include/c++/7/scoped_allocator: In constructor 'std::scoped_allocator_adaptor<_OuterAlloc, _InnerAllocs>::scoped_allocator_adaptor(std::tuple<const _OuterAlloc&, const _InnerAllocs& ...>, int)':
/usr/include/c++/7/scoped_allocator:235:47: error: '_Indices' was not declared in this scope
           _M_inner(_S_select_on_copy(std::get<_Indices+1>(__refs))...)
                                               ^~~~~~~~
/usr/include/c++/7/scoped_allocator:235:47: note: suggested alternative: '_ISdigit'
           _M_inner(_S_select_on_copy(std::get<_Indices+1>(__refs))...)
                                               ^~~~~~~~
                                               _ISdigit
/usr/include/c++/7/scoped_allocator:235:67: error: expansion pattern 'std::scoped_allocator_adaptor<_OuterAlloc, _InnerAllocs>::_S_select_on_copy(get<<expression error> >(__refs))' contains no argument packs
           _M_inner(_S_select_on_copy(std::get<_Indices+1>(__refs))...)
                                                                   ^~~
In file included from /usr/include/c++/7/bits/hashtable.h:35:0,
                 from /usr/include/c++/7/unordered_map:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:117,
                 from foo.cc:26:
/usr/include/c++/7/bits/hashtable_policy.h: At global scope:
/usr/include/c++/7/bits/hashtable_policy.h:281:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t  _M_hash_code;
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:342:20: error: 'ptrdiff_t' in namespace 'std' does not name a type
       typedef std::ptrdiff_t    difference_type;
                    ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:393:20: error: 'ptrdiff_t' in namespace 'std' does not name a type
       typedef std::ptrdiff_t    difference_type;
                    ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:441:18: error: 'size_t' in namespace 'std' does not name a type
     typedef std::size_t first_argument_type;
                  ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:442:18: error: 'size_t' in namespace 'std' does not name a type
     typedef std::size_t second_argument_type;
                  ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:443:18: error: 'size_t' in namespace 'std' does not name a type
     typedef std::size_t result_type;
                  ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:445:5: error: 'result_type' does not name a type; did you mean 'result_of'?
     result_type
     ^~~~~~~~~~~
     result_of
/usr/include/c++/7/bits/hashtable_policy.h:472:10: error: 'size_t' in namespace 'std' does not name a type
     std::size_t
          ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:476:10: error: 'size_t' in namespace 'std' does not name a type
     std::size_t
          ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:484:26: error: 'size_t' is not a member of 'std'
     std::pair<bool, std::size_t>
                          ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:484:26: note: suggested alternative: 'set'
     std::pair<bool, std::size_t>
                          ^~~~~~
                          set
/usr/include/c++/7/bits/hashtable_policy.h:484:26: error: 'size_t' is not a member of 'std'
/usr/include/c++/7/bits/hashtable_policy.h:484:26: note: suggested alternative: 'set'
     std::pair<bool, std::size_t>
                          ^~~~~~
                          set
/usr/include/c++/7/bits/hashtable_policy.h:484:32: error: template argument 2 is invalid
     std::pair<bool, std::size_t>
                                ^
/usr/include/c++/7/bits/hashtable_policy.h:485:25: error: 'std::size_t' has not been declared
     _M_need_rehash(std::size_t __n_bkt, std::size_t __n_elt,
                         ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:485:46: error: 'std::size_t' has not been declared
     _M_need_rehash(std::size_t __n_bkt, std::size_t __n_elt,
                                              ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:486:11: error: 'std::size_t' has not been declared
      std::size_t __n_ins) const;
           ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:488:18: error: 'size_t' in namespace 'std' does not name a type
     typedef std::size_t _State;
                  ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:490:5: error: invalid use of template-name 'std::__detail::_State' without an argument list
     _State
     ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:490:5: note: class template argument deduction is only available with -std=c++1z or -std=gnu++1z
In file included from /usr/include/c++/7/regex:59:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from foo.cc:26:
/usr/include/c++/7/bits/regex_automaton.h:122:12: note: 'template<class _Char_type> struct std::__detail::_State' declared here
     struct _State : _State_base
            ^~~~~~
In file included from /usr/include/c++/7/bits/hashtable.h:35:0,
                 from /usr/include/c++/7/unordered_map:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:117,
                 from foo.cc:26:
/usr/include/c++/7/bits/hashtable_policy.h:499:14: error: '_State' is not a type
     _M_reset(_State __state)
              ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:502:23: error: 'size_t' in namespace 'std' does not name a type
     static const std::size_t _S_growth_factor = 2;
                       ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:505:18: error: 'size_t' in namespace 'std' does not name a type
     mutable std::size_t _M_next_resize;
                  ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: In constructor 'std::__detail::_Prime_rehash_policy::_Prime_rehash_policy(float)':
/usr/include/c++/7/bits/hashtable_policy.h:465:32: error: class 'std::__detail::_Prime_rehash_policy' does not have any field named '_M_next_resize'
     : _M_max_load_factor(__z), _M_next_resize(0) { }
                                ^~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: In member function 'void std::__detail::_Prime_rehash_policy::_M_reset()':
/usr/include/c++/7/bits/hashtable_policy.h:496:7: error: '_M_next_resize' was not declared in this scope
     { _M_next_resize = 0; }
       ^~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:496:7: note: suggested alternative: '_M_need_rehash'
     { _M_next_resize = 0; }
       ^~~~~~~~~~~~~~
       _M_need_rehash
/usr/include/c++/7/bits/hashtable_policy.h: In member function 'void std::__detail::_Prime_rehash_policy::_M_reset(int)':
/usr/include/c++/7/bits/hashtable_policy.h:500:7: error: '_M_next_resize' was not declared in this scope
     { _M_next_resize = __state; }
       ^~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:500:7: note: suggested alternative: '_M_need_rehash'
     { _M_next_resize = __state; }
       ^~~~~~~~~~~~~~
       _M_need_rehash
/usr/include/c++/7/bits/hashtable_policy.h: At global scope:
/usr/include/c++/7/bits/hashtable_policy.h:511:18: error: 'size_t' in namespace 'std' does not name a type
     typedef std::size_t first_argument_type;
                  ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:512:18: error: 'size_t' in namespace 'std' does not name a type
     typedef std::size_t second_argument_type;
                  ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:513:18: error: 'size_t' in namespace 'std' does not name a type
     typedef std::size_t result_type;
                  ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:515:5: error: 'result_type' does not name a type; did you mean 'result_of'?
     result_type
     ^~~~~~~~~~~
     result_of
/usr/include/c++/7/bits/hashtable_policy.h:523:15: error: 'size_t' in namespace 'std' does not name a type
   inline std::size_t
               ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:559:10: error: 'size_t' in namespace 'std' does not name a type
     std::size_t
          ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:585:10: error: 'size_t' in namespace 'std' does not name a type
     std::size_t
          ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:593:26: error: 'size_t' is not a member of 'std'
     std::pair<bool, std::size_t>
                          ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:593:26: note: suggested alternative: 'set'
     std::pair<bool, std::size_t>
                          ^~~~~~
                          set
/usr/include/c++/7/bits/hashtable_policy.h:593:26: error: 'size_t' is not a member of 'std'
/usr/include/c++/7/bits/hashtable_policy.h:593:26: note: suggested alternative: 'set'
     std::pair<bool, std::size_t>
                          ^~~~~~
                          set
/usr/include/c++/7/bits/hashtable_policy.h:593:32: error: template argument 2 is invalid
     std::pair<bool, std::size_t>
                                ^
/usr/include/c++/7/bits/hashtable_policy.h:594:25: error: 'std::size_t' has not been declared
     _M_need_rehash(std::size_t __n_bkt, std::size_t __n_elt,
                         ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:594:46: error: 'std::size_t' has not been declared
     _M_need_rehash(std::size_t __n_bkt, std::size_t __n_elt,
                                              ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:595:11: error: 'std::size_t' has not been declared
      std::size_t __n_ins) noexcept
           ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:614:18: error: 'size_t' in namespace 'std' does not name a type
     typedef std::size_t _State;
                  ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:616:5: error: invalid use of template-name 'std::__detail::_State' without an argument list
     _State
     ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:616:5: note: class template argument deduction is only available with -std=c++1z or -std=gnu++1z
In file included from /usr/include/c++/7/regex:59:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from foo.cc:26:
/usr/include/c++/7/bits/regex_automaton.h:122:12: note: 'template<class _Char_type> struct std::__detail::_State' declared here
     struct _State : _State_base
            ^~~~~~
In file included from /usr/include/c++/7/bits/hashtable.h:35:0,
                 from /usr/include/c++/7/unordered_map:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:117,
                 from foo.cc:26:
/usr/include/c++/7/bits/hashtable_policy.h:625:14: error: '_State' is not a type
     _M_reset(_State __state) noexcept
              ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:628:23: error: 'size_t' in namespace 'std' does not name a type
     static const std::size_t _S_growth_factor = 2;
                       ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:631:10: error: 'size_t' in namespace 'std' does not name a type
     std::size_t _M_next_resize;
          ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: In constructor 'std::__detail::_Power2_rehash_policy::_Power2_rehash_policy(float)':
/usr/include/c++/7/bits/hashtable_policy.h:551:32: error: class 'std::__detail::_Power2_rehash_policy' does not have any field named '_M_next_resize'
     : _M_max_load_factor(__z), _M_next_resize(0) { }
                                ^~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: In member function 'int std::__detail::_Power2_rehash_policy::_M_need_rehash(int, int, int)':
/usr/include/c++/7/bits/hashtable_policy.h:597:32: error: '_M_next_resize' was not declared in this scope
       if (__n_elt + __n_ins >= _M_next_resize)
                                ^~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:597:32: note: suggested alternative: '_M_need_rehash'
       if (__n_elt + __n_ins >= _M_next_resize)
                                ^~~~~~~~~~~~~~
                                _M_need_rehash
/usr/include/c++/7/bits/hashtable_policy.h:603:34: error: 'size_t' is not a member of 'std'
        _M_next_bkt(std::max<std::size_t>(__builtin_floor(__min_bkts) + 1,
                                  ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:603:34: note: suggested alternative: 'set'
        _M_next_bkt(std::max<std::size_t>(__builtin_floor(__min_bkts) + 1,
                                  ^~~~~~
                                  set
/usr/include/c++/7/bits/hashtable_policy.h:603:34: error: 'size_t' is not a member of 'std'
/usr/include/c++/7/bits/hashtable_policy.h:603:34: note: suggested alternative: 'set'
        _M_next_bkt(std::max<std::size_t>(__builtin_floor(__min_bkts) + 1,
                                  ^~~~~~
                                  set
/usr/include/c++/7/bits/hashtable_policy.h:604:17: error: '_S_growth_factor' was not declared in this scope
       __n_bkt * _S_growth_factor)));
                 ^~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:604:17: note: suggested alternative: 'max_load_factor'
       __n_bkt * _S_growth_factor)));
                 ^~~~~~~~~~~~~~~~
                 max_load_factor
/usr/include/c++/7/bits/hashtable_policy.h:603:8: error: '_M_next_bkt' was not declared in this scope
        _M_next_bkt(std::max<std::size_t>(__builtin_floor(__min_bkts) + 1,
        ^~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:603:8: note: suggested alternative: '__n_bkt'
        _M_next_bkt(std::max<std::size_t>(__builtin_floor(__min_bkts) + 1,
        ^~~~~~~~~~~
        __n_bkt
/usr/include/c++/7/bits/hashtable_policy.h:608:34: error: cannot convert 'std::pair<bool, int>' to 'int' in return
    return std::make_pair(false, 0);
                                  ^
/usr/include/c++/7/bits/hashtable_policy.h:611:32: error: cannot convert 'std::pair<bool, int>' to 'int' in return
  return std::make_pair(false, 0);
                                ^
/usr/include/c++/7/bits/hashtable_policy.h: In member function 'void std::__detail::_Power2_rehash_policy::_M_reset()':
/usr/include/c++/7/bits/hashtable_policy.h:622:7: error: '_M_next_resize' was not declared in this scope
     { _M_next_resize = 0; }
       ^~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:622:7: note: suggested alternative: '_M_need_rehash'
     { _M_next_resize = 0; }
       ^~~~~~~~~~~~~~
       _M_need_rehash
/usr/include/c++/7/bits/hashtable_policy.h: In member function 'void std::__detail::_Power2_rehash_policy::_M_reset(int)':
/usr/include/c++/7/bits/hashtable_policy.h:626:7: error: '_M_next_resize' was not declared in this scope
     { _M_next_resize = __state; }
       ^~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:626:7: note: suggested alternative: '_M_need_rehash'
     { _M_next_resize = __state; }
       ^~~~~~~~~~~~~~
       _M_need_rehash
/usr/include/c++/7/bits/hashtable_policy.h: At global scope:
/usr/include/c++/7/bits/hashtable_policy.h:694:7: error: 'mapped_type' does not name a type; did you mean 'false_type'?
       mapped_type&
       ^~~~~~~~~~~
       false_type
/usr/include/c++/7/bits/hashtable_policy.h:697:7: error: 'mapped_type' does not name a type; did you mean 'false_type'?
       mapped_type&
       ^~~~~~~~~~~
       false_type
/usr/include/c++/7/bits/hashtable_policy.h:702:7: error: 'mapped_type' does not name a type; did you mean 'false_type'?
       mapped_type&
       ^~~~~~~~~~~
       false_type
/usr/include/c++/7/bits/hashtable_policy.h:705:13: error: 'mapped_type' does not name a type; did you mean 'false_type'?
       const mapped_type&
             ^~~~~~~~~~~
             false_type
/usr/include/c++/7/bits/hashtable_policy.h:716:8: error: 'mapped_type' does not name a type; did you mean 'false_type'?
     -> mapped_type&
        ^~~~~~~~~~~
        false_type
/usr/include/c++/7/bits/hashtable_policy.h:716:19: error: expected initializer before '&' token
     -> mapped_type&
                   ^
/usr/include/c++/7/bits/hashtable_policy.h:741:8: error: 'mapped_type' does not name a type; did you mean 'false_type'?
     -> mapped_type&
        ^~~~~~~~~~~
        false_type
/usr/include/c++/7/bits/hashtable_policy.h:741:19: error: expected initializer before '&' token
     -> mapped_type&
                   ^
/usr/include/c++/7/bits/hashtable_policy.h:766:8: error: 'mapped_type' does not name a type; did you mean 'false_type'?
     -> mapped_type&
        ^~~~~~~~~~~
        false_type
/usr/include/c++/7/bits/hashtable_policy.h:766:19: error: expected initializer before '&' token
     -> mapped_type&
                   ^
/usr/include/c++/7/bits/hashtable_policy.h:785:14: error: expected initializer before 'mapped_type'
     -> const mapped_type&
              ^~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: In member function 'void std::__detail::_Insert_base<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::_M_insert_range(_InputIterator, _InputIterator, const _NodeGetter&)':
/usr/include/c++/7/bits/hashtable_policy.h:881:41: error: 'size_t' is not a member of 'std'
  using pair_type = std::pair<bool, std::size_t>;
                                         ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:881:41: note: suggested alternative: 'set'
  using pair_type = std::pair<bool, std::size_t>;
                                         ^~~~~~
                                         set
/usr/include/c++/7/bits/hashtable_policy.h:881:41: error: 'size_t' is not a member of 'std'
/usr/include/c++/7/bits/hashtable_policy.h:881:41: note: suggested alternative: 'set'
  using pair_type = std::pair<bool, std::size_t>;
                                         ^~~~~~
                                         set
/usr/include/c++/7/bits/hashtable_policy.h:881:47: error: template argument 2 is invalid
  using pair_type = std::pair<bool, std::size_t>;
                                               ^
/usr/include/c++/7/bits/hashtable_policy.h:888:2: error: 'pair_type' was not declared in this scope
  pair_type __do_rehash = __rehash._M_need_rehash(__h._M_bucket_count,
  ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:888:2: note: suggested alternative: '_Bit_type'
  pair_type __do_rehash = __rehash._M_need_rehash(__h._M_bucket_count,
  ^~~~~~~~~
  _Bit_type
/usr/include/c++/7/bits/hashtable_policy.h:892:6: error: '__do_rehash' was not declared in this scope
  if (__do_rehash.first)
      ^~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:892:6: note: suggested alternative: '__rehash'
  if (__do_rehash.first)
      ^~~~~~~~~~~
      __rehash
/usr/include/c++/7/bits/hashtable_policy.h: At global scope:
/usr/include/c++/7/bits/hashtable_policy.h:1065:20: error: 'std::size_t' has not been declared
       reserve(std::size_t __n)
                    ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1190:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1194:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1266:20: error: 'size_t' in namespace 'std' does not name a type
       typedef std::size_t     __hash_code;
                    ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1278:7: error: '__hash_code' does not name a type; did you mean '_Hash_node'?
       __hash_code
       ^~~~~~~~~~~
       _Hash_node
/usr/include/c++/7/bits/hashtable_policy.h:1282:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1286:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1294:35: error: '__hash_code' has not been declared
       _M_store_code(__node_type*, __hash_code) const
                                   ^~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1356:20: error: 'size_t' in namespace 'std' does not name a type
       typedef std::size_t     __hash_code;
                    ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1366:7: error: '__hash_code' does not name a type; did you mean '_Hash_node'?
       __hash_code
       ^~~~~~~~~~~
       _Hash_node
/usr/include/c++/7/bits/hashtable_policy.h:1370:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1375:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1382:39: error: '__hash_code' has not been declared
       _M_store_code(__node_type* __n, __hash_code __c) const
                                       ^~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1463:12: error: 'std::size_t' has not been declared
       std::size_t __bkt, std::size_t __bkt_count)
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1463:31: error: 'std::size_t' has not been declared
       std::size_t __bkt, std::size_t __bkt_count)
                               ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1482:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t _M_bucket;
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1483:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t _M_bucket_count;
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1489:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: In constructor 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, true>::_Local_iterator_base(const __hash_code_base&, std::__detail::_Hash_node<_Value, true>*, int, int)':
/usr/include/c++/7/bits/hashtable_policy.h:1465:15: error: class 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, true>' does not have any field named '_M_bucket'
  _M_cur(__p), _M_bucket(__bkt), _M_bucket_count(__bkt_count) { }
               ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1465:33: error: class 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, true>' does not have any field named '_M_bucket_count'
  _M_cur(__p), _M_bucket(__bkt), _M_bucket_count(__bkt_count) { }
                                 ^~~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: In member function 'void std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, true>::_M_incr()':
/usr/include/c++/7/bits/hashtable_policy.h:1473:11: error: 'size_t' is not a member of 'std'
      std::size_t __bkt
           ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1473:11: note: suggested alternative: 'set'
      std::size_t __bkt
           ^~~~~~
           set
/usr/include/c++/7/bits/hashtable_policy.h:1476:10: error: '__bkt' was not declared in this scope
      if (__bkt != _M_bucket)
          ^~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1476:10: note: suggested alternative: '__cbrt'
      if (__bkt != _M_bucket)
          ^~~~~
          __cbrt
/usr/include/c++/7/bits/hashtable_policy.h:1476:19: error: '_M_bucket' was not declared in this scope
      if (__bkt != _M_bucket)
                   ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: At global scope:
/usr/include/c++/7/bits/hashtable_policy.h:1545:12: error: 'std::size_t' has not been declared
       std::size_t __bkt, std::size_t __bkt_count)
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1545:31: error: 'std::size_t' has not been declared
       std::size_t __bkt, std::size_t __bkt_count)
                               ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1590:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t _M_bucket;
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1591:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t _M_bucket_count;
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1604:12: error: 'size_t' in namespace 'std' does not name a type
       std::size_t
            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: In constructor 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>::_Local_iterator_base()':
/usr/include/c++/7/bits/hashtable_policy.h:1541:32: error: class 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>' does not have any field named '_M_bucket_count'
       _Local_iterator_base() : _M_bucket_count(-1) { }
                                ^~~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: In constructor 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>::_Local_iterator_base(const __hash_code_base&, std::__detail::_Hash_node<_Value, false>*, int, int)':
/usr/include/c++/7/bits/hashtable_policy.h:1546:22: error: class 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>' does not have any field named '_M_bucket'
       : _M_cur(__p), _M_bucket(__bkt), _M_bucket_count(__bkt_count)
                      ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1546:40: error: class 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>' does not have any field named '_M_bucket_count'
       : _M_cur(__p), _M_bucket(__bkt), _M_bucket_count(__bkt_count)
                                        ^~~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: In destructor 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>::~_Local_iterator_base()':
/usr/include/c++/7/bits/hashtable_policy.h:1551:6: error: '_M_bucket_count' was not declared in this scope
  if (_M_bucket_count != -1)
      ^~~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1551:6: note: suggested alternative: '__shared_count'
  if (_M_bucket_count != -1)
      ^~~~~~~~~~~~~~~
      __shared_count
/usr/include/c++/7/bits/hashtable_policy.h: In copy constructor 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>::_Local_iterator_base(const std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>&)':
/usr/include/c++/7/bits/hashtable_policy.h:1556:32: error: class 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>' does not have any field named '_M_bucket'
       : _M_cur(__iter._M_cur), _M_bucket(__iter._M_bucket),
                                ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1557:9: error: class 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>' does not have any field named '_M_bucket_count'
         _M_bucket_count(__iter._M_bucket_count)
         ^~~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1559:6: error: '_M_bucket_count' was not declared in this scope
  if (_M_bucket_count != -1)
      ^~~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1559:6: note: suggested alternative: '__shared_count'
  if (_M_bucket_count != -1)
      ^~~~~~~~~~~~~~~
      __shared_count
/usr/include/c++/7/bits/hashtable_policy.h: In member function 'std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>& std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>::operator=(const std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>&)':
/usr/include/c++/7/bits/hashtable_policy.h:1566:6: error: '_M_bucket_count' was not declared in this scope
  if (_M_bucket_count != -1)
      ^~~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1566:6: note: suggested alternative: '__shared_count'
  if (_M_bucket_count != -1)
      ^~~~~~~~~~~~~~~
      __shared_count
/usr/include/c++/7/bits/hashtable_policy.h:1569:2: error: '_M_bucket' was not declared in this scope
  _M_bucket = __iter._M_bucket;
  ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1570:2: error: '_M_bucket_count' was not declared in this scope
  _M_bucket_count = __iter._M_bucket_count;
  ^~~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1570:2: note: suggested alternative: '__shared_count'
  _M_bucket_count = __iter._M_bucket_count;
  ^~~~~~~~~~~~~~~
  __shared_count
/usr/include/c++/7/bits/hashtable_policy.h: In member function 'void std::__detail::_Local_iterator_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>::_M_incr()':
/usr/include/c++/7/bits/hashtable_policy.h:1582:11: error: 'size_t' is not a member of 'std'
      std::size_t __bkt = this->_M_h()->_M_bucket_index(_M_cur,
           ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1582:11: note: suggested alternative: 'set'
      std::size_t __bkt = this->_M_h()->_M_bucket_index(_M_cur,
           ^~~~~~
           set
/usr/include/c++/7/bits/hashtable_policy.h:1584:10: error: '__bkt' was not declared in this scope
      if (__bkt != _M_bucket)
          ^~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1584:10: note: suggested alternative: '__cbrt'
      if (__bkt != _M_bucket)
          ^~~~~
          __cbrt
/usr/include/c++/7/bits/hashtable_policy.h:1584:19: error: '_M_bucket' was not declared in this scope
      if (__bkt != _M_bucket)
                   ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: At global scope:
/usr/include/c++/7/bits/hashtable_policy.h:1646:20: error: 'ptrdiff_t' in namespace 'std' does not name a type
       typedef std::ptrdiff_t    difference_type;
                    ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1653:14: error: 'std::size_t' has not been declared
         std::size_t __bkt, std::size_t __bkt_count)
              ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1653:33: error: 'std::size_t' has not been declared
         std::size_t __bkt, std::size_t __bkt_count)
                                 ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1698:20: error: 'ptrdiff_t' in namespace 'std' does not name a type
       typedef std::ptrdiff_t    difference_type;
                    ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1705:13: error: 'std::size_t' has not been declared
        std::size_t __bkt, std::size_t __bkt_count)
             ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1705:32: error: 'std::size_t' has not been declared
        std::size_t __bkt, std::size_t __bkt_count)
                                ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1762:18: error: 'size_t' in namespace 'std' does not name a type
     typedef std::size_t     size_type;
                  ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1763:18: error: 'ptrdiff_t' in namespace 'std' does not name a type
     typedef std::ptrdiff_t    difference_type;
                  ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h: In static member function 'static bool std::__detail::_Equality_base::_S_is_permutation(_Uiterator, _Uiterator, _Uiterator)':
/usr/include/c++/7/bits/hashtable_policy.h:1872:9: error: 'ptrdiff_t' is not a member of 'std'
    std::ptrdiff_t __n2 = 0;
         ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1872:9: note: suggested alternative:
In file included from /usr/include/c++/7/cstddef:50:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:45,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:149:26: note:   'ptrdiff_t'
 typedef __PTRDIFF_TYPE__ ptrdiff_t;
                          ^~~~~~~~~
In file included from /usr/include/c++/7/bits/hashtable.h:35:0,
                 from /usr/include/c++/7/unordered_map:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:117,
                 from foo.cc:26:
/usr/include/c++/7/bits/hashtable_policy.h:1875:10: error: '__n2' was not declared in this scope
        ++__n2;
          ^~~~
/usr/include/c++/7/bits/hashtable_policy.h:1875:10: note: suggested alternative: '__lg'
        ++__n2;
          ^~~~
          __lg
/usr/include/c++/7/bits/hashtable_policy.h:1877:9: error: '__n2' was not declared in this scope
    if (!__n2)
         ^~~~
/usr/include/c++/7/bits/hashtable_policy.h:1877:9: note: suggested alternative: '__lg'
    if (!__n2)
         ^~~~
         __lg
/usr/include/c++/7/bits/hashtable_policy.h:1880:9: error: 'ptrdiff_t' is not a member of 'std'
    std::ptrdiff_t __n1 = 0;
         ^~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:1880:9: note: suggested alternative:
In file included from /usr/include/c++/7/cstddef:50:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:45,
                 from foo.cc:26:
/usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:149:26: note:   'ptrdiff_t'
 typedef __PTRDIFF_TYPE__ ptrdiff_t;
                          ^~~~~~~~~
In file included from /usr/include/c++/7/bits/hashtable.h:35:0,
                 from /usr/include/c++/7/unordered_map:47,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:117,
                 from foo.cc:26:
/usr/include/c++/7/bits/hashtable_policy.h:1883:10: error: '__n1' was not declared in this scope
        ++__n1;
          ^~~~
/usr/include/c++/7/bits/hashtable_policy.h:1883:10: note: suggested alternative: '__y1'
        ++__n1;
          ^~~~
          __y1
/usr/include/c++/7/bits/hashtable_policy.h:1885:8: error: '__n1' was not declared in this scope
    if (__n1 != __n2)
        ^~~~
/usr/include/c++/7/bits/hashtable_policy.h:1885:8: note: suggested alternative: '__y1'
    if (__n1 != __n2)
        ^~~~
        __y1
/usr/include/c++/7/bits/hashtable_policy.h:1885:16: error: '__n2' was not declared in this scope
    if (__n1 != __n2)
                ^~~~
/usr/include/c++/7/bits/hashtable_policy.h:1885:16: note: suggested alternative: '__lg'
    if (__n1 != __n2)
                ^~~~
                __lg
/usr/include/c++/7/bits/hashtable_policy.h: At global scope:
/usr/include/c++/7/bits/hashtable_policy.h:2047:7: error: expected ';' at end of member declaration
       _M_allocate_buckets(std::size_t __n);
       ^~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:2047:39: error: expected ')' before '__n'
       _M_allocate_buckets(std::size_t __n);
                                       ^~~
/usr/include/c++/7/bits/hashtable_policy.h:2050:50: error: 'std::size_t' has not been declared
       _M_deallocate_buckets(__bucket_type*, std::size_t __n);
                                                  ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:2103:60: error: 'std::__detail::_Hashtable_alloc<_NodeAlloc>::__node_base** std::__detail::_Hashtable_alloc<_NodeAlloc>::_M_allocate_buckets' is not a static data member of 'struct std::__detail::_Hashtable_alloc<_NodeAlloc>'
     _Hashtable_alloc<_NodeAlloc>::_M_allocate_buckets(std::size_t __n)
                                                            ^~~~~~
/usr/include/c++/7/bits/hashtable_policy.h:2103:60: error: template definition of non-template 'std::__detail::_Hashtable_alloc<_NodeAlloc>::__node_base** std::__detail::_Hashtable_alloc<_NodeAlloc>::_M_allocate_buckets'
/usr/include/c++/7/bits/hashtable_policy.h:2103:60: error: 'size_t' is not a member of 'std'
/usr/include/c++/7/bits/hashtable_policy.h:2103:60: note: suggested alternative: 'set'
     _Hashtable_alloc<_NodeAlloc>::_M_allocate_buckets(std::size_t __n)
                                                            ^~~~~~
                                                            set
/usr/include/c++/7/bits/hashtable_policy.h:2116:13: error: 'std::size_t' has not been declared
        std::size_t __n)
             ^~~~~~
In file included from /usr/include/c++/7/unordered_map:47:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:117,
                 from foo.cc:26:
/usr/include/c++/7/bits/hashtable.h:270:18: error: 'size_t' is not a member of 'std'
            (std::size_t)0)),
                  ^~~~~~
/usr/include/c++/7/bits/hashtable.h:270:18: note: suggested alternative: 'set'
            (std::size_t)0)),
                  ^~~~~~
                  set
/usr/include/c++/7/bits/hashtable.h: In member function 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>& std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::operator=(const std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>&)':
/usr/include/c++/7/bits/hashtable.h:1030:12: error: 'size_t' is not a member of 'std'
       std::size_t __former_bucket_count = _M_bucket_count;
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1030:12: note: suggested alternative: 'set'
       std::size_t __former_bucket_count = _M_bucket_count;
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:1054:46: error: '__former_bucket_count' was not declared in this scope
      _M_deallocate_buckets(__former_buckets, __former_bucket_count);
                                              ^~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:1054:46: note: suggested alternative: '__former_buckets'
      _M_deallocate_buckets(__former_buckets, __former_bucket_count);
                                              ^~~~~~~~~~~~~~~~~~~~~
                                              __former_buckets
/usr/include/c++/7/bits/hashtable.h:1064:26: error: '__former_bucket_count' was not declared in this scope
        _M_bucket_count = __former_bucket_count;
                          ^~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:1064:26: note: suggested alternative: '__former_buckets'
        _M_bucket_count = __former_bucket_count;
                          ^~~~~~~~~~~~~~~~~~~~~
                          __former_buckets
/usr/include/c++/7/bits/hashtable.h: In member function 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::iterator std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::find(const key_type&)':
/usr/include/c++/7/bits/hashtable.h:1424:12: error: 'size_t' is not a member of 'std'
       std::size_t __n = _M_bucket_index(__k, __code);
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1424:12: note: suggested alternative: 'set'
       std::size_t __n = _M_bucket_index(__k, __code);
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:1425:39: error: '__n' was not declared in this scope
       __node_type* __p = _M_find_node(__n, __k, __code);
                                       ^~~
/usr/include/c++/7/bits/hashtable.h:1425:39: note: suggested alternative: '__yn'
       __node_type* __p = _M_find_node(__n, __k, __code);
                                       ^~~
                                       __yn
/usr/include/c++/7/bits/hashtable.h: In member function 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::const_iterator std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::find(const key_type&) const':
/usr/include/c++/7/bits/hashtable.h:1440:12: error: 'size_t' is not a member of 'std'
       std::size_t __n = _M_bucket_index(__k, __code);
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1440:12: note: suggested alternative: 'set'
       std::size_t __n = _M_bucket_index(__k, __code);
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:1441:39: error: '__n' was not declared in this scope
       __node_type* __p = _M_find_node(__n, __k, __code);
                                       ^~~
/usr/include/c++/7/bits/hashtable.h:1441:39: note: suggested alternative: '__yn'
       __node_type* __p = _M_find_node(__n, __k, __code);
                                       ^~~
                                       __yn
/usr/include/c++/7/bits/hashtable.h: In member function 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::size_type std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::count(const key_type&) const':
/usr/include/c++/7/bits/hashtable.h:1456:12: error: 'size_t' is not a member of 'std'
       std::size_t __n = _M_bucket_index(__k, __code);
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1456:12: note: suggested alternative: 'set'
       std::size_t __n = _M_bucket_index(__k, __code);
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:1457:42: error: '__n' was not declared in this scope
       __node_type* __p = _M_bucket_begin(__n);
                                          ^~~
/usr/include/c++/7/bits/hashtable.h:1457:42: note: suggested alternative: '__yn'
       __node_type* __p = _M_bucket_begin(__n);
                                          ^~~
                                          __yn
/usr/include/c++/7/bits/hashtable.h:1461:12: error: 'size_t' is not a member of 'std'
       std::size_t __result = 0;
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1461:12: note: suggested alternative: 'set'
       std::size_t __result = 0;
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:1465:8: error: '__result' was not declared in this scope
      ++__result;
        ^~~~~~~~
/usr/include/c++/7/bits/hashtable.h:1465:8: note: suggested alternative: '_M_reset'
      ++__result;
        ^~~~~~~~
        _M_reset
/usr/include/c++/7/bits/hashtable.h:1466:13: error: '__result' was not declared in this scope
    else if (__result)
             ^~~~~~~~
/usr/include/c++/7/bits/hashtable.h:1466:13: note: suggested alternative: '_M_reset'
    else if (__result)
             ^~~~~~~~
             _M_reset
/usr/include/c++/7/bits/hashtable.h:1474:14: error: '__result' was not declared in this scope
       return __result;
              ^~~~~~~~
/usr/include/c++/7/bits/hashtable.h:1474:14: note: suggested alternative: '_M_reset'
       return __result;
              ^~~~~~~~
              _M_reset
/usr/include/c++/7/bits/hashtable.h: In member function 'std::pair<typename std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _H1, _H2, _Hash, _Traits>::iterator, typename std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _H1, _H2, _Hash, _Traits>::iterator> std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::equal_range(const key_type&)':
/usr/include/c++/7/bits/hashtable.h:1488:12: error: 'size_t' is not a member of 'std'
       std::size_t __n = _M_bucket_index(__k, __code);
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1488:12: note: suggested alternative: 'set'
       std::size_t __n = _M_bucket_index(__k, __code);
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:1489:39: error: '__n' was not declared in this scope
       __node_type* __p = _M_find_node(__n, __k, __code);
                                       ^~~
/usr/include/c++/7/bits/hashtable.h:1489:39: note: suggested alternative: '__yn'
       __node_type* __p = _M_find_node(__n, __k, __code);
                                       ^~~
                                       __yn
/usr/include/c++/7/bits/hashtable.h: In member function 'std::pair<typename std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _H1, _H2, _Hash, _Traits>::const_iterator, typename std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _H1, _H2, _Hash, _Traits>::const_iterator> std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::equal_range(const key_type&) const':
/usr/include/c++/7/bits/hashtable.h:1515:12: error: 'size_t' is not a member of 'std'
       std::size_t __n = _M_bucket_index(__k, __code);
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1515:12: note: suggested alternative: 'set'
       std::size_t __n = _M_bucket_index(__k, __code);
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:1516:39: error: '__n' was not declared in this scope
       __node_type* __p = _M_find_node(__n, __k, __code);
                                       ^~~
/usr/include/c++/7/bits/hashtable.h:1516:39: note: suggested alternative: '__yn'
       __node_type* __p = _M_find_node(__n, __k, __code);
                                       ^~~
                                       __yn
/usr/include/c++/7/bits/hashtable.h: In member function 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::iterator std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::_M_insert_unique_node(std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::size_type, std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::__hash_code, std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::__node_type*)':
/usr/include/c++/7/bits/hashtable.h:1711:28: error: 'size_t' is not a member of 'std'
       std::pair<bool, std::size_t> __do_rehash
                            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1711:28: note: suggested alternative: 'set'
       std::pair<bool, std::size_t> __do_rehash
                            ^~~~~~
                            set
/usr/include/c++/7/bits/hashtable.h:1711:28: error: 'size_t' is not a member of 'std'
/usr/include/c++/7/bits/hashtable.h:1711:28: note: suggested alternative: 'set'
       std::pair<bool, std::size_t> __do_rehash
                            ^~~~~~
                            set
/usr/include/c++/7/bits/hashtable.h:1711:34: error: template argument 2 is invalid
       std::pair<bool, std::size_t> __do_rehash
                                  ^
/usr/include/c++/7/bits/hashtable.h:1716:20: error: request for member 'first' in '__do_rehash', which is of non-class type 'int'
    if (__do_rehash.first)
                    ^~~~~
/usr/include/c++/7/bits/hashtable.h:1718:30: error: request for member 'second' in '__do_rehash', which is of non-class type 'int'
        _M_rehash(__do_rehash.second, __saved_state);
                              ^~~~~~
/usr/include/c++/7/bits/hashtable.h: In member function 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::iterator std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::_M_insert_multi_node(std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::__node_type*, std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::__hash_code, std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::__node_type*)':
/usr/include/c++/7/bits/hashtable.h:1750:28: error: 'size_t' is not a member of 'std'
       std::pair<bool, std::size_t> __do_rehash
                            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1750:28: note: suggested alternative: 'set'
       std::pair<bool, std::size_t> __do_rehash
                            ^~~~~~
                            set
/usr/include/c++/7/bits/hashtable.h:1750:28: error: 'size_t' is not a member of 'std'
/usr/include/c++/7/bits/hashtable.h:1750:28: note: suggested alternative: 'set'
       std::pair<bool, std::size_t> __do_rehash
                            ^~~~~~
                            set
/usr/include/c++/7/bits/hashtable.h:1750:34: error: template argument 2 is invalid
       std::pair<bool, std::size_t> __do_rehash
                                  ^
/usr/include/c++/7/bits/hashtable.h:1755:20: error: request for member 'first' in '__do_rehash', which is of non-class type 'int'
    if (__do_rehash.first)
                    ^~~~~
/usr/include/c++/7/bits/hashtable.h:1756:28: error: request for member 'second' in '__do_rehash', which is of non-class type 'int'
      _M_rehash(__do_rehash.second, __saved_state);
                            ^~~~~~
/usr/include/c++/7/bits/hashtable.h: In member function 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::iterator std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::erase(std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::const_iterator)':
/usr/include/c++/7/bits/hashtable.h:1859:12: error: 'size_t' is not a member of 'std'
       std::size_t __bkt = _M_bucket_index(__n);
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1859:12: note: suggested alternative: 'set'
       std::size_t __bkt = _M_bucket_index(__n);
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:1864:52: error: '__bkt' was not declared in this scope
       __node_base* __prev_n = _M_get_previous_node(__bkt, __n);
                                                    ^~~~~
/usr/include/c++/7/bits/hashtable.h:1864:52: note: suggested alternative: '__cbrt'
       __node_base* __prev_n = _M_get_previous_node(__bkt, __n);
                                                    ^~~~~
                                                    __cbrt
/usr/include/c++/7/bits/hashtable.h: In member function 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::size_type std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::_M_erase(std::true_type, const key_type&)':
/usr/include/c++/7/bits/hashtable.h:1907:12: error: 'size_t' is not a member of 'std'
       std::size_t __bkt = _M_bucket_index(__k, __code);
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1907:12: note: suggested alternative: 'set'
       std::size_t __bkt = _M_bucket_index(__k, __code);
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:1910:51: error: '__bkt' was not declared in this scope
       __node_base* __prev_n = _M_find_before_node(__bkt, __k, __code);
                                                   ^~~~~
/usr/include/c++/7/bits/hashtable.h:1910:51: note: suggested alternative: '__cbrt'
       __node_base* __prev_n = _M_find_before_node(__bkt, __k, __code);
                                                   ^~~~~
                                                   __cbrt
/usr/include/c++/7/bits/hashtable.h: In member function 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::size_type std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::_M_erase(std::false_type, const key_type&)':
/usr/include/c++/7/bits/hashtable.h:1931:12: error: 'size_t' is not a member of 'std'
       std::size_t __bkt = _M_bucket_index(__k, __code);
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1931:12: note: suggested alternative: 'set'
       std::size_t __bkt = _M_bucket_index(__k, __code);
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:1934:51: error: '__bkt' was not declared in this scope
       __node_base* __prev_n = _M_find_before_node(__bkt, __k, __code);
                                                   ^~~~~
/usr/include/c++/7/bits/hashtable.h:1934:51: note: suggested alternative: '__cbrt'
       __node_base* __prev_n = _M_find_before_node(__bkt, __k, __code);
                                                   ^~~~~
                                                   __cbrt
/usr/include/c++/7/bits/hashtable.h:1946:12: error: 'size_t' is not a member of 'std'
       std::size_t __n_last_bkt = __bkt;
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1946:12: note: suggested alternative: 'set'
       std::size_t __n_last_bkt = __bkt;
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:1952:4: error: '__n_last_bkt' was not declared in this scope
    __n_last_bkt = _M_bucket_index(__n_last);
    ^~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:1952:4: note: suggested alternative: '__n_last'
    __n_last_bkt = _M_bucket_index(__n_last);
    ^~~~~~~~~~~~
    __n_last
/usr/include/c++/7/bits/hashtable.h:1954:14: error: '__n_last_bkt' was not declared in this scope
       while (__n_last_bkt == __bkt && this->_M_equals(__k, __code, __n_last));
              ^~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:1954:14: note: suggested alternative: '__n_last'
       while (__n_last_bkt == __bkt && this->_M_equals(__k, __code, __n_last));
              ^~~~~~~~~~~~
              __n_last
/usr/include/c++/7/bits/hashtable.h: In member function 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::iterator std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::erase(std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::const_iterator, std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::const_iterator)':
/usr/include/c++/7/bits/hashtable.h:1991:12: error: 'size_t' is not a member of 'std'
       std::size_t __bkt = _M_bucket_index(__n);
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1991:12: note: suggested alternative: 'set'
       std::size_t __bkt = _M_bucket_index(__n);
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:1993:52: error: '__bkt' was not declared in this scope
       __node_base* __prev_n = _M_get_previous_node(__bkt, __n);
                                                    ^~~~~
/usr/include/c++/7/bits/hashtable.h:1993:52: note: suggested alternative: '__cbrt'
       __node_base* __prev_n = _M_get_previous_node(__bkt, __n);
                                                    ^~~~~
                                                    __cbrt
/usr/include/c++/7/bits/hashtable.h:1995:12: error: 'size_t' is not a member of 'std'
       std::size_t __n_bkt = __bkt;
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:1995:12: note: suggested alternative: 'set'
       std::size_t __n_bkt = __bkt;
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:2006:8: error: '__n_bkt' was not declared in this scope
        __n_bkt = _M_bucket_index(__n);
        ^~~~~~~
/usr/include/c++/7/bits/hashtable.h:2006:8: note: suggested alternative: '__cbrt'
        __n_bkt = _M_bucket_index(__n);
        ^~~~~~~
        __cbrt
/usr/include/c++/7/bits/hashtable.h:2008:30: error: '__n_bkt' was not declared in this scope
    while (__n != __last_n && __n_bkt == __bkt);
                              ^~~~~~~
/usr/include/c++/7/bits/hashtable.h:2008:30: note: suggested alternative: '__cbrt'
    while (__n != __last_n && __n_bkt == __bkt);
                              ^~~~~~~
                              __cbrt
/usr/include/c++/7/bits/hashtable.h:2017:19: error: '__n_bkt' was not declared in this scope
       if (__n && (__n_bkt != __bkt || __is_bucket_begin))
                   ^~~~~~~
/usr/include/c++/7/bits/hashtable.h:2017:19: note: suggested alternative: '__cbrt'
       if (__n && (__n_bkt != __bkt || __is_bucket_begin))
                   ^~~~~~~
                   __cbrt
/usr/include/c++/7/bits/hashtable.h: In member function 'void std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::rehash(std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::size_type)':
/usr/include/c++/7/bits/hashtable.h:2048:12: error: 'size_t' is not a member of 'std'
       std::size_t __buckets
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:2048:12: note: suggested alternative: 'set'
       std::size_t __buckets
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:2051:7: error: '__buckets' was not declared in this scope
       __buckets = _M_rehash_policy._M_next_bkt(__buckets);
       ^~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:2051:7: note: suggested alternative: '_M_buckets'
       __buckets = _M_rehash_policy._M_next_bkt(__buckets);
       ^~~~~~~~~
       _M_buckets
/usr/include/c++/7/bits/hashtable.h: In member function 'void std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::_M_rehash_aux(std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::size_type, std::true_type)':
/usr/include/c++/7/bits/hashtable.h:2095:12: error: 'size_t' is not a member of 'std'
       std::size_t __bbegin_bkt = 0;
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:2095:12: note: suggested alternative: 'set'
       std::size_t __bbegin_bkt = 0;
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:2099:9: error: 'size_t' is not a member of 'std'
    std::size_t __bkt = __hash_code_base::_M_bucket_index(__p, __n);
         ^~~~~~
/usr/include/c++/7/bits/hashtable.h:2099:9: note: suggested alternative: 'set'
    std::size_t __bkt = __hash_code_base::_M_bucket_index(__p, __n);
         ^~~~~~
         set
/usr/include/c++/7/bits/hashtable.h:2100:23: error: '__bkt' was not declared in this scope
    if (!__new_buckets[__bkt])
                       ^~~~~
/usr/include/c++/7/bits/hashtable.h:2100:23: note: suggested alternative: '__cbrt'
    if (!__new_buckets[__bkt])
                       ^~~~~
                       __cbrt
/usr/include/c++/7/bits/hashtable.h:2106:17: error: '__bbegin_bkt' was not declared in this scope
   __new_buckets[__bbegin_bkt] = __p;
                 ^~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:2106:17: note: suggested alternative: '_M_begin'
   __new_buckets[__bbegin_bkt] = __p;
                 ^~~~~~~~~~~~
                 _M_begin
/usr/include/c++/7/bits/hashtable.h:2107:8: error: '__bbegin_bkt' was not declared in this scope
        __bbegin_bkt = __bkt;
        ^~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:2107:8: note: suggested alternative: '_M_begin'
        __bbegin_bkt = __bkt;
        ^~~~~~~~~~~~
        _M_begin
/usr/include/c++/7/bits/hashtable.h: In member function 'void std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::_M_rehash_aux(std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::size_type, std::false_type)':
/usr/include/c++/7/bits/hashtable.h:2137:12: error: 'size_t' is not a member of 'std'
       std::size_t __bbegin_bkt = 0;
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:2137:12: note: suggested alternative: 'set'
       std::size_t __bbegin_bkt = 0;
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:2138:12: error: 'size_t' is not a member of 'std'
       std::size_t __prev_bkt = 0;
            ^~~~~~
/usr/include/c++/7/bits/hashtable.h:2138:12: note: suggested alternative: 'set'
       std::size_t __prev_bkt = 0;
            ^~~~~~
            set
/usr/include/c++/7/bits/hashtable.h:2145:9: error: 'size_t' is not a member of 'std'
    std::size_t __bkt = __hash_code_base::_M_bucket_index(__p, __n);
         ^~~~~~
/usr/include/c++/7/bits/hashtable.h:2145:9: note: suggested alternative: 'set'
    std::size_t __bkt = __hash_code_base::_M_bucket_index(__p, __n);
         ^~~~~~
         set
/usr/include/c++/7/bits/hashtable.h:2147:20: error: '__prev_bkt' was not declared in this scope
    if (__prev_p && __prev_bkt == __bkt)
                    ^~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:2147:20: note: suggested alternative: '__prev_p'
    if (__prev_p && __prev_bkt == __bkt)
                    ^~~~~~~~~~
                    __prev_p
/usr/include/c++/7/bits/hashtable.h:2147:34: error: '__bkt' was not declared in this scope
    if (__prev_p && __prev_bkt == __bkt)
                                  ^~~~~
/usr/include/c++/7/bits/hashtable.h:2147:34: note: suggested alternative: '__cbrt'
    if (__prev_p && __prev_bkt == __bkt)
                                  ^~~~~
                                  __cbrt
/usr/include/c++/7/bits/hashtable.h:2170:14: error: 'size_t' is not a member of 'std'
         std::size_t __next_bkt
              ^~~~~~
/usr/include/c++/7/bits/hashtable.h:2170:14: note: suggested alternative: 'set'
         std::size_t __next_bkt
              ^~~~~~
              set
/usr/include/c++/7/bits/hashtable.h:2173:13: error: '__next_bkt' was not declared in this scope
         if (__next_bkt != __prev_bkt)
             ^~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:2173:13: note: suggested alternative: '__nextupl'
         if (__next_bkt != __prev_bkt)
             ^~~~~~~~~~
             __nextupl
/usr/include/c++/7/bits/hashtable.h:2185:21: error: '__bbegin_bkt' was not declared in this scope
       __new_buckets[__bbegin_bkt] = __p;
                     ^~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:2185:21: note: suggested alternative: '_M_begin'
       __new_buckets[__bbegin_bkt] = __p;
                     ^~~~~~~~~~~~
                     _M_begin
/usr/include/c++/7/bits/hashtable.h:2186:5: error: '__bbegin_bkt' was not declared in this scope
     __bbegin_bkt = __bkt;
     ^~~~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:2186:5: note: suggested alternative: '_M_begin'
     __bbegin_bkt = __bkt;
     ^~~~~~~~~~~~
     _M_begin
/usr/include/c++/7/bits/hashtable.h:2195:4: error: '__prev_bkt' was not declared in this scope
    __prev_bkt = __bkt;
    ^~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:2195:4: note: suggested alternative: '__prev_p'
    __prev_bkt = __bkt;
    ^~~~~~~~~~
    __prev_p
/usr/include/c++/7/bits/hashtable.h:2195:17: error: '__bkt' was not declared in this scope
    __prev_bkt = __bkt;
                 ^~~~~
/usr/include/c++/7/bits/hashtable.h:2195:17: note: suggested alternative: '__cbrt'
    __prev_bkt = __bkt;
                 ^~~~~
                 __cbrt
/usr/include/c++/7/bits/hashtable.h:2201:9: error: 'size_t' is not a member of 'std'
    std::size_t __next_bkt
         ^~~~~~
/usr/include/c++/7/bits/hashtable.h:2201:9: note: suggested alternative: 'set'
    std::size_t __next_bkt
         ^~~~~~
         set
/usr/include/c++/7/bits/hashtable.h:2203:8: error: '__next_bkt' was not declared in this scope
    if (__next_bkt != __prev_bkt)
        ^~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:2203:8: note: suggested alternative: '__nextupl'
    if (__next_bkt != __prev_bkt)
        ^~~~~~~~~~
        __nextupl
/usr/include/c++/7/bits/hashtable.h:2203:22: error: '__prev_bkt' was not declared in this scope
    if (__next_bkt != __prev_bkt)
                      ^~~~~~~~~~
/usr/include/c++/7/bits/hashtable.h:2203:22: note: suggested alternative: '__prev_p'
    if (__next_bkt != __prev_bkt)
                      ^~~~~~~~~~
                      __prev_p
foo.cc: In function 'int main()':
foo.cc:40:32: warning: format '%lld' expects argument of type 'long long int*', but argument 2 has type '__int128*' [-Wformat=]
         scanf("%lld %lld",&m,&k);
                           ~~   ^
foo.cc:40:32: warning: format '%lld' expects argument of type 'long long int*', but argument 3 has type '__int128*' [-Wformat=]
foo.cc:41:39: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type '__int128' [-Wformat=]
         printf("%lld\n",sol(k-1,m,k)+1);
                         ~~~~~~~~~~~~~~^
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h: In instantiation of 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]':
/usr/include/c++/7/system_error:189:40:   required from here
/usr/include/c++/7/bits/basic_string.h:542:24: error: 'class std::__cxx11::basic_string<char>' has no member named '_M_allocated_capacity'; did you mean '_S_local_capacity'?
      _M_capacity(__str._M_allocated_capacity);
                  ~~~~~~^~~~~~~~~~~~~~~~~~~~~
                  _S_local_capacity
/usr/include/c++/7/bits/basic_string.h:542:17: error: '_M_capacity' was not declared in this scope
      _M_capacity(__str._M_allocated_capacity);
      ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:548:11: error: '_M_length' was not declared in this scope
  _M_length(__str.length());
  ~~~~~~~~~^~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In instantiation of 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]':
/usr/include/c++/7/system_error:351:50:   required from here
/usr/include/c++/7/bits/basic_string.h:5968:33: error: 'class std::__cxx11::basic_string<char>' has no member named 'size'
       const auto __size = __lhs.size() + __rhs.size();
                           ~~~~~~^~~~
/usr/include/c++/7/bits/basic_string.h:5968:48: error: 'class std::__cxx11::basic_string<char>' has no member named 'size'
       const auto __size = __lhs.size() + __rhs.size();
                                          ~~~~~~^~~~
/usr/include/c++/7/bits/basic_string.h:5969:43: error: 'class std::__cxx11::basic_string<char>' has no member named 'capacity'
       const bool __cond = (__size > __lhs.capacity()
                                     ~~~~~~^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5970:26: error: 'class std::__cxx11::basic_string<char>' has no member named 'capacity'
       && __size <= __rhs.capacity());
                    ~~~~~~^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5971:32: error: no matching function for call to 'std::__cxx11::basic_string<char>::insert(int, std::__cxx11::basic_string<char>&)'
       return __cond ? std::move(__rhs.insert(0, __lhs))
                       ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:1567:9: note: candidate: template<class _InputIterator, class> std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::const_iterator, _InputIterator, _InputIterator) [with _InputIterator = _InputIterator; <template-parameter-2-2> = <template-parameter-1-2>; _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]
         insert(const_iterator __p, _InputIterator __beg, _InputIterator __end)
         ^~~~~~
/usr/include/c++/7/bits/basic_string.h:1567:9: note:   template argument deduction/substitution failed:
/usr/include/c++/7/bits/basic_string.h:5971:32: note:   candidate expects 3 arguments, 2 provided
       return __cond ? std::move(__rhs.insert(0, __lhs))
                       ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:1601:7: note: candidate: void std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator, std::initializer_list<_Tp>) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator = __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >; typename __gnu_cxx::__alloc_traits<typename __gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::pointer = char*]
       insert(iterator __p, initializer_list<_CharT> __l)
       ^~~~~~
/usr/include/c++/7/bits/basic_string.h:1601:7: note:   no known conversion for argument 1 from 'int' to 'std::__cxx11::basic_string<char>::iterator {aka __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >}'
/usr/include/c++/7/bits/basic_string.h:1728:7: note: candidate: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::__const_iterator, _CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator = __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >; typename __gnu_cxx::__alloc_traits<typename __gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::pointer = char*; std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::__const_iterator = __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >; typename __gnu_cxx::__alloc_traits<typename __gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::const_pointer = const char*]
       insert(__const_iterator __p, _CharT __c)
       ^~~~~~
/usr/include/c++/7/bits/basic_string.h:1728:7: note:   no known conversion for argument 1 from 'int' to 'std::__cxx11::basic_string<char>::__const_iterator {aka __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >}'
/usr/include/c++/7/bits/basic_string.h: In instantiation of 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(const _CharT*, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]':
/usr/include/c++/7/system_error:354:51:   required from here
/usr/include/c++/7/bits/basic_string.h:5979:23: error: no matching function for call to 'std::__cxx11::basic_string<char>::insert(int, const char*&)'
     { return std::move(__rhs.insert(0, __lhs)); }
              ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:1567:9: note: candidate: template<class _InputIterator, class> std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::const_iterator, _InputIterator, _InputIterator) [with _InputIterator = _InputIterator; <template-parameter-2-2> = <template-parameter-1-2>; _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]
         insert(const_iterator __p, _InputIterator __beg, _InputIterator __end)
         ^~~~~~
/usr/include/c++/7/bits/basic_string.h:1567:9: note:   template argument deduction/substitution failed:
/usr/include/c++/7/bits/basic_string.h:5979:23: note:   candidate expects 3 arguments, 2 provided
     { return std::move(__rhs.insert(0, __lhs)); }
              ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:1601:7: note: candidate: void std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator, std::initializer_list<_Tp>) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator = __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >; typename __gnu_cxx::__alloc_traits<typename __gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::pointer = char*]
       insert(iterator __p, initializer_list<_CharT> __l)
       ^~~~~~
/usr/include/c++/7/bits/basic_string.h:1601:7: note:   no known conversion for argument 1 from 'int' to 'std::__cxx11::basic_string<char>::iterator {aka __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >}'
/usr/include/c++/7/bits/basic_string.h:1728:7: note: candidate: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::__const_iterator, _CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator = __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >; typename __gnu_cxx::__alloc_traits<typename __gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::pointer = char*; std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::__const_iterator = __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >; typename __gnu_cxx::__alloc_traits<typename __gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::const_pointer = const char*]
       insert(__const_iterator __p, _CharT __c)
       ^~~~~~
/usr/include/c++/7/bits/basic_string.h:1728:7: note:   no known conversion for argument 1 from 'int' to 'std::__cxx11::basic_string<char>::__const_iterator {aka __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >}'
In file included from /usr/include/c++/7/exception:142:0,
                 from /usr/include/c++/7/ios:39,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/exception_ptr.h: In instantiation of 'std::__exception_ptr::exception_ptr std::make_exception_ptr(_Ex) [with _Ex = std::future_error]':
/usr/include/c++/7/future:438:68:   required from here
/usr/include/c++/7/bits/exception_ptr.h:188:11: error: no matching function for call to 'operator new(sizetype, void*&)'
           ::new (__e) _Ex(__ex);
           ^~~~~~~~~~~~~~~~~~~~~
<built-in>: note: candidate: void* operator new(long unsigned int)
<built-in>: note:   candidate expects 1 argument, 2 provided
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from foo.cc:26:
/usr/include/c++/7/bits/basic_string.h: In instantiation of 'void std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_dispose() [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]':
/usr/include/c++/7/bits/basic_string.h:647:19:   required from 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::~basic_string() [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
/usr/include/c++/7/system_error:189:40:   required from here
/usr/include/c++/7/bits/basic_string.h:221:15: error: using invalid field 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::<unnamed union>::_M_allocated_capacity'
    _M_destroy(_M_allocated_capacity);
               ^~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:221:14: error: '_M_destroy' was not declared in this scope
    _M_destroy(_M_allocated_capacity);
    ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:221:14: note: suggested alternative: '_M_data'
    _M_destroy(_M_allocated_capacity);
    ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
    _M_data
/usr/include/c++/7/bits/basic_string.h: In instantiation of 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::append(const _CharT*) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]':
/usr/include/c++/7/bits/basic_string.h:5929:7:   required from 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
/usr/include/c++/7/system_error:351:30:   required from here
/usr/include/c++/7/bits/basic_string.h:1257:17: error: '_M_check_length' was not declared in this scope
  _M_check_length(size_type(0), __n, "basic_string::append");
  ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:1257:17: note: suggested alternative: '__socklen_t'
  _M_check_length(size_type(0), __n, "basic_string::append");
  ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  __socklen_t
/usr/include/c++/7/bits/basic_string.h:1258:18: error: '_M_append' was not declared in this scope
  return _M_append(__s, __n);
         ~~~~~~~~~^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:1258:18: note: suggested alternative: 'append'
  return _M_append(__s, __n);
         ~~~~~~~~~^~~~~~~~~~
         append
In file included from /usr/include/c++/7/bits/locale_conv.h:41:0,
                 from /usr/include/c++/7/locale:43,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from foo.cc:26:
/usr/include/c++/7/bits/unique_ptr.h: In instantiation of 'std::__uniq_ptr_impl<_Tp, _Dp>::pointer& std::__uniq_ptr_impl<_Tp, _Dp>::_M_ptr() [with _Tp = std::__future_base::_Result_base; _Dp = std::__future_base::_Result_base::_Deleter; std::__uniq_ptr_impl<_Tp, _Dp>::pointer = std::__future_base::_Result_base*]':
/usr/include/c++/7/bits/unique_ptr.h:261:8:   required from 'std::unique_ptr<_Tp, _Dp>::~unique_ptr() [with _Tp = std::__future_base::_Result_base; _Dp = std::__future_base::_Result_base::_Deleter]'
/usr/include/c++/7/future:324:77:   required from here
/usr/include/c++/7/bits/unique_ptr.h:146:47: error: no matching function for call to 'get<0>(std::tuple<std::__future_base::_Result_base*, std::__future_base::_Result_base::_Deleter>&)'
       pointer&   _M_ptr() { return std::get<0>(_M_t); }
                                    ~~~~~~~~~~~^~~~~~
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility:225:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int& std::get(std::pair<_Tp1, _Tp2>&)
     get(std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:225:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:230:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int&& std::get(std::pair<_Tp1, _Tp2>&&)
     get(std::pair<_Tp1, _Tp2>&& __in) noexcept
     ^~~
/usr/include/c++/7/utility:230:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:235:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr const int& std::get(const std::pair<_Tp1, _Tp2>&)
     get(const std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:235:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array:307:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp& std::get(int&)
     get(array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:307:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:316:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp&& std::get(int&&)
     get(array<_Tp, _Nm>&& __arr) noexcept
     ^~~
/usr/include/c++/7/array:316:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:324:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr const _Tp& std::get(const int&)
     get(const array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:324:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/bits/locale_conv.h:41:0,
                 from /usr/include/c++/7/locale:43,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from foo.cc:26:
/usr/include/c++/7/bits/unique_ptr.h: In instantiation of 'std::__uniq_ptr_impl<_Tp, _Dp>::pointer& std::__uniq_ptr_impl<_Tp, _Dp>::_M_ptr() [with _Tp = std::__future_base::_State_baseV2::_Make_ready; _Dp = std::default_delete<std::__future_base::_State_baseV2::_Make_ready>; std::__uniq_ptr_impl<_Tp, _Dp>::pointer = std::__future_base::_State_baseV2::_Make_ready*]':
/usr/include/c++/7/bits/unique_ptr.h:261:8:   required from 'std::unique_ptr<_Tp, _Dp>::~unique_ptr() [with _Tp = std::__future_base::_State_baseV2::_Make_ready; _Dp = std::default_delete<std::__future_base::_State_baseV2::_Make_ready>]'
/usr/include/c++/7/future:419:46:   required from here
/usr/include/c++/7/bits/unique_ptr.h:146:47: error: no matching function for call to 'get<0>(std::tuple<std::__future_base::_State_baseV2::_Make_ready*, std::default_delete<std::__future_base::_State_baseV2::_Make_ready> >&)'
       pointer&   _M_ptr() { return std::get<0>(_M_t); }
                                    ~~~~~~~~~~~^~~~~~
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility:225:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int& std::get(std::pair<_Tp1, _Tp2>&)
     get(std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:225:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:230:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int&& std::get(std::pair<_Tp1, _Tp2>&&)
     get(std::pair<_Tp1, _Tp2>&& __in) noexcept
     ^~~
/usr/include/c++/7/utility:230:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:235:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr const int& std::get(const std::pair<_Tp1, _Tp2>&)
     get(const std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:235:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array:307:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp& std::get(int&)
     get(array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:307:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:316:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp&& std::get(int&&)
     get(array<_Tp, _Nm>&& __arr) noexcept
     ^~~
/usr/include/c++/7/array:316:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:324:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr const _Tp& std::get(const int&)
     get(const array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:324:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/bits/locale_conv.h:41:0,
                 from /usr/include/c++/7/locale:43,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from foo.cc:26:
/usr/include/c++/7/bits/unique_ptr.h: In instantiation of 'std::__uniq_ptr_impl<_Tp, _Dp>::pointer& std::__uniq_ptr_impl<_Tp, _Dp>::_M_ptr() [with _Tp = std::__future_base::_Result<void>; _Dp = std::__future_base::_Result_base::_Deleter; std::__uniq_ptr_impl<_Tp, _Dp>::pointer = std::__future_base::_Result<void>*]':
/usr/include/c++/7/bits/unique_ptr.h:261:8:   required from 'std::unique_ptr<_Tp, _Dp>::~unique_ptr() [with _Tp = std::__future_base::_Result<void>; _Dp = std::__future_base::_Result_base::_Deleter]'
/usr/include/c++/7/future:1258:28:   required from here
/usr/include/c++/7/bits/unique_ptr.h:146:47: error: no matching function for call to 'get<0>(std::tuple<std::__future_base::_Result<void>*, std::__future_base::_Result_base::_Deleter>&)'
       pointer&   _M_ptr() { return std::get<0>(_M_t); }
                                    ~~~~~~~~~~~^~~~~~
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility:225:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int& std::get(std::pair<_Tp1, _Tp2>&)
     get(std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:225:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:230:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int&& std::get(std::pair<_Tp1, _Tp2>&&)
     get(std::pair<_Tp1, _Tp2>&& __in) noexcept
     ^~~
/usr/include/c++/7/utility:230:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:235:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr const int& std::get(const std::pair<_Tp1, _Tp2>&)
     get(const std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:235:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array:307:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp& std::get(int&)
     get(array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:307:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:316:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp&& std::get(int&&)
     get(array<_Tp, _Nm>&& __arr) noexcept
     ^~~
/usr/include/c++/7/array:316:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:324:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr const _Tp& std::get(const int&)
     get(const array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:324:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/bits/locale_conv.h:41:0,
                 from /usr/include/c++/7/locale:43,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from foo.cc:26:
/usr/include/c++/7/bits/unique_ptr.h: In instantiation of '_Dp& std::__uniq_ptr_impl<_Tp, _Dp>::_M_deleter() [with _Tp = std::__future_base::_Result_base; _Dp = std::__future_base::_Result_base::_Deleter]':
/usr/include/c++/7/bits/unique_ptr.h:337:32:   required from 'std::unique_ptr<_Tp, _Dp>::deleter_type& std::unique_ptr<_Tp, _Dp>::get_deleter() [with _Tp = std::__future_base::_Result_base; _Dp = std::__future_base::_Result_base::_Deleter; std::unique_ptr<_Tp, _Dp>::deleter_type = std::__future_base::_Result_base::_Deleter]'
/usr/include/c++/7/bits/unique_ptr.h:263:15:   required from 'std::unique_ptr<_Tp, _Dp>::~unique_ptr() [with _Tp = std::__future_base::_Result_base; _Dp = std::__future_base::_Result_base::_Deleter]'
/usr/include/c++/7/future:324:77:   required from here
/usr/include/c++/7/bits/unique_ptr.h:148:51: error: no matching function for call to 'get<1>(std::tuple<std::__future_base::_Result_base*, std::__future_base::_Result_base::_Deleter>&)'
       _Dp&       _M_deleter() { return std::get<1>(_M_t); }
                                        ~~~~~~~~~~~^~~~~~
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility:225:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int& std::get(std::pair<_Tp1, _Tp2>&)
     get(std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:225:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:230:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int&& std::get(std::pair<_Tp1, _Tp2>&&)
     get(std::pair<_Tp1, _Tp2>&& __in) noexcept
     ^~~
/usr/include/c++/7/utility:230:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:235:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr const int& std::get(const std::pair<_Tp1, _Tp2>&)
     get(const std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:235:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array:307:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp& std::get(int&)
     get(array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:307:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:316:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp&& std::get(int&&)
     get(array<_Tp, _Nm>&& __arr) noexcept
     ^~~
/usr/include/c++/7/array:316:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:324:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr const _Tp& std::get(const int&)
     get(const array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:324:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/bits/locale_conv.h:41:0,
                 from /usr/include/c++/7/locale:43,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from foo.cc:26:
/usr/include/c++/7/bits/unique_ptr.h: In instantiation of 'std::__uniq_ptr_impl<_Tp, _Dp>::pointer std::__uniq_ptr_impl<_Tp, _Dp>::_M_ptr() const [with _Tp = std::__future_base::_Result_base; _Dp = std::__future_base::_Result_base::_Deleter; std::__uniq_ptr_impl<_Tp, _Dp>::pointer = std::__future_base::_Result_base*]':
/usr/include/c++/7/bits/unique_ptr.h:332:28:   required from 'std::unique_ptr<_Tp, _Dp>::pointer std::unique_ptr<_Tp, _Dp>::get() const [with _Tp = std::__future_base::_Result_base; _Dp = std::__future_base::_Result_base::_Deleter; std::unique_ptr<_Tp, _Dp>::pointer = std::__future_base::_Result_base*]'
/usr/include/c++/7/bits/unique_ptr.h:318:13:   required from 'typename std::add_lvalue_reference<_Tp>::type std::unique_ptr<_Tp, _Dp>::operator*() const [with _Tp = std::__future_base::_Result_base; _Dp = std::__future_base::_Result_base::_Deleter; typename std::add_lvalue_reference<_Tp>::type = std::__future_base::_Result_base&]'
/usr/include/c++/7/future:338:10:   required from here
/usr/include/c++/7/bits/unique_ptr.h:147:53: error: no matching function for call to 'get<0>(const std::tuple<std::__future_base::_Result_base*, std::__future_base::_Result_base::_Deleter>&)'
       pointer    _M_ptr() const { return std::get<0>(_M_t); }
                                          ~~~~~~~~~~~^~~~~~
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility:225:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int& std::get(std::pair<_Tp1, _Tp2>&)
     get(std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:225:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:230:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int&& std::get(std::pair<_Tp1, _Tp2>&&)
     get(std::pair<_Tp1, _Tp2>&& __in) noexcept
     ^~~
/usr/include/c++/7/utility:230:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:235:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr const int& std::get(const std::pair<_Tp1, _Tp2>&)
     get(const std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:235:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array:307:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp& std::get(int&)
     get(array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:307:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:316:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp&& std::get(int&&)
     get(array<_Tp, _Nm>&& __arr) noexcept
     ^~~
/usr/include/c++/7/array:316:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:324:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr const _Tp& std::get(const int&)
     get(const array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:324:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/bits/locale_conv.h:41:0,
                 from /usr/include/c++/7/locale:43,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from foo.cc:26:
/usr/include/c++/7/bits/unique_ptr.h: In instantiation of '_Dp& std::__uniq_ptr_impl<_Tp, _Dp>::_M_deleter() [with _Tp = std::__future_base::_State_baseV2::_Make_ready; _Dp = std::default_delete<std::__future_base::_State_baseV2::_Make_ready>]':
/usr/include/c++/7/bits/unique_ptr.h:337:32:   required from 'std::unique_ptr<_Tp, _Dp>::deleter_type& std::unique_ptr<_Tp, _Dp>::get_deleter() [with _Tp = std::__future_base::_State_baseV2::_Make_ready; _Dp = std::default_delete<std::__future_base::_State_baseV2::_Make_ready>; std::unique_ptr<_Tp, _Dp>::deleter_type = std::default_delete<std::__future_base::_State_baseV2::_Make_ready>]'
/usr/include/c++/7/bits/unique_ptr.h:263:15:   required from 'std::unique_ptr<_Tp, _Dp>::~unique_ptr() [with _Tp = std::__future_base::_State_baseV2::_Make_ready; _Dp = std::default_delete<std::__future_base::_State_baseV2::_Make_ready>]'
/usr/include/c++/7/future:419:46:   required from here
/usr/include/c++/7/bits/unique_ptr.h:148:51: error: no matching function for call to 'get<1>(std::tuple<std::__future_base::_State_baseV2::_Make_ready*, std::default_delete<std::__future_base::_State_baseV2::_Make_ready> >&)'
       _Dp&       _M_deleter() { return std::get<1>(_M_t); }
                                        ~~~~~~~~~~~^~~~~~
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility:225:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int& std::get(std::pair<_Tp1, _Tp2>&)
     get(std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:225:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:230:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int&& std::get(std::pair<_Tp1, _Tp2>&&)
     get(std::pair<_Tp1, _Tp2>&& __in) noexcept
     ^~~
/usr/include/c++/7/utility:230:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:235:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr const int& std::get(const std::pair<_Tp1, _Tp2>&)
     get(const std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:235:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array:307:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp& std::get(int&)
     get(array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:307:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:316:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp&& std::get(int&&)
     get(array<_Tp, _Nm>&& __arr) noexcept
     ^~~
/usr/include/c++/7/array:316:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:324:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr const _Tp& std::get(const int&)
     get(const array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:324:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/bits/locale_conv.h:41:0,
                 from /usr/include/c++/7/locale:43,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from foo.cc:26:
/usr/include/c++/7/bits/unique_ptr.h: In instantiation of 'std::__uniq_ptr_impl<_Tp, _Dp>::pointer std::__uniq_ptr_impl<_Tp, _Dp>::_M_ptr() const [with _Tp = std::__future_base::_State_baseV2::_Make_ready; _Dp = std::default_delete<std::__future_base::_State_baseV2::_Make_ready>; std::__uniq_ptr_impl<_Tp, _Dp>::pointer = std::__future_base::_State_baseV2::_Make_ready*]':
/usr/include/c++/7/bits/unique_ptr.h:332:28:   required from 'std::unique_ptr<_Tp, _Dp>::pointer std::unique_ptr<_Tp, _Dp>::get() const [with _Tp = std::__future_base::_State_baseV2::_Make_ready; _Dp = std::default_delete<std::__future_base::_State_baseV2::_Make_ready>; std::unique_ptr<_Tp, _Dp>::pointer = std::__future_base::_State_baseV2::_Make_ready*]'
/usr/include/c++/7/bits/unique_ptr.h:326:12:   required from 'std::unique_ptr<_Tp, _Dp>::pointer std::unique_ptr<_Tp, _Dp>::operator->() const [with _Tp = std::__future_base::_State_baseV2::_Make_ready; _Dp = std::default_delete<std::__future_base::_State_baseV2::_Make_ready>; std::unique_ptr<_Tp, _Dp>::pointer = std::__future_base::_State_baseV2::_Make_ready*]'
/usr/include/c++/7/future:426:6:   required from here
/usr/include/c++/7/bits/unique_ptr.h:147:53: error: no matching function for call to 'get<0>(const std::tuple<std::__future_base::_State_baseV2::_Make_ready*, std::default_delete<std::__future_base::_State_baseV2::_Make_ready> >&)'
       pointer    _M_ptr() const { return std::get<0>(_M_t); }
                                          ~~~~~~~~~~~^~~~~~
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility:225:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int& std::get(std::pair<_Tp1, _Tp2>&)
     get(std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:225:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:230:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int&& std::get(std::pair<_Tp1, _Tp2>&&)
     get(std::pair<_Tp1, _Tp2>&& __in) noexcept
     ^~~
/usr/include/c++/7/utility:230:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:235:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr const int& std::get(const std::pair<_Tp1, _Tp2>&)
     get(const std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:235:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array:307:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp& std::get(int&)
     get(array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:307:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:316:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp&& std::get(int&&)
     get(array<_Tp, _Nm>&& __arr) noexcept
     ^~~
/usr/include/c++/7/array:316:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:324:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr const _Tp& std::get(const int&)
     get(const array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:324:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/functional:54:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/tuple: In instantiation of 'std::tuple<_T1, _T2>& std::tuple<_T1, _T2>::operator=(std::tuple<_T1, _T2>&&) [with _T1 = std::__future_base::_Result_base*; _T2 = std::__future_base::_Result_base::_Deleter]':
/usr/include/c++/7/bits/unique_ptr.h:117:11:   required from 'typename std::enable_if<std::__and_<std::__not_<std::__is_tuple_like<_Tp> >, std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> >::value>::type std::swap(_Tp&, _Tp&) [with _Tp = std::__uniq_ptr_impl<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter>; typename std::enable_if<std::__and_<std::__not_<std::__is_tuple_like<_Tp> >, std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> >::value>::type = void]'
/usr/include/c++/7/bits/unique_ptr.h:379:6:   required from 'void std::unique_ptr<_Tp, _Dp>::swap(std::unique_ptr<_Tp, _Dp>&) [with _Tp = std::__future_base::_Result_base; _Dp = std::__future_base::_Result_base::_Deleter]'
/usr/include/c++/7/future:443:26:   required from here
/usr/include/c++/7/tuple:1219:2: error: invalid static_cast from type 'std::tuple<std::__future_base::_Result_base*, std::__future_base::_Result_base::_Deleter>' to type 'std::tuple<std::__future_base::_Result_base*, std::__future_base::_Result_base::_Deleter>::_Inherited& {aka int&}'
  static_cast<_Inherited&>(*this) = std::move(__in);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/7/bits/locale_conv.h:41:0,
                 from /usr/include/c++/7/locale:43,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from foo.cc:26:
/usr/include/c++/7/bits/unique_ptr.h: In instantiation of '_Dp& std::__uniq_ptr_impl<_Tp, _Dp>::_M_deleter() [with _Tp = std::__future_base::_Result<void>; _Dp = std::__future_base::_Result_base::_Deleter]':
/usr/include/c++/7/bits/unique_ptr.h:337:32:   required from 'std::unique_ptr<_Tp, _Dp>::deleter_type& std::unique_ptr<_Tp, _Dp>::get_deleter() [with _Tp = std::__future_base::_Result<void>; _Dp = std::__future_base::_Result_base::_Deleter; std::unique_ptr<_Tp, _Dp>::deleter_type = std::__future_base::_Result_base::_Deleter]'
/usr/include/c++/7/bits/unique_ptr.h:263:15:   required from 'std::unique_ptr<_Tp, _Dp>::~unique_ptr() [with _Tp = std::__future_base::_Result<void>; _Dp = std::__future_base::_Result_base::_Deleter]'
/usr/include/c++/7/future:1258:28:   required from here
/usr/include/c++/7/bits/unique_ptr.h:148:51: error: no matching function for call to 'get<1>(std::tuple<std::__future_base::_Result<void>*, std::__future_base::_Result_base::_Deleter>&)'
       _Dp&       _M_deleter() { return std::get<1>(_M_t); }
                                        ~~~~~~~~~~~^~~~~~
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility:225:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int& std::get(std::pair<_Tp1, _Tp2>&)
     get(std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:225:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:230:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int&& std::get(std::pair<_Tp1, _Tp2>&&)
     get(std::pair<_Tp1, _Tp2>&& __in) noexcept
     ^~~
/usr/include/c++/7/utility:230:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:235:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr const int& std::get(const std::pair<_Tp1, _Tp2>&)
     get(const std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:235:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array:307:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp& std::get(int&)
     get(array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:307:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:316:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp&& std::get(int&&)
     get(array<_Tp, _Nm>&& __arr) noexcept
     ^~~
/usr/include/c++/7/array:316:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:324:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr const _Tp& std::get(const int&)
     get(const array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:324:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/functional:54:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/tuple: In instantiation of 'std::tuple<_T1, _T2>& std::tuple<_T1, _T2>::operator=(std::tuple<_T1, _T2>&&) [with _T1 = std::__future_base::_Result<void>*; _T2 = std::__future_base::_Result_base::_Deleter]':
/usr/include/c++/7/bits/unique_ptr.h:117:11:   required from 'typename std::enable_if<std::__and_<std::__not_<std::__is_tuple_like<_Tp> >, std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> >::value>::type std::swap(_Tp&, _Tp&) [with _Tp = std::__uniq_ptr_impl<std::__future_base::_Result<void>, std::__future_base::_Result_base::_Deleter>; typename std::enable_if<std::__and_<std::__not_<std::__is_tuple_like<_Tp> >, std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> >::value>::type = void]'
/usr/include/c++/7/bits/unique_ptr.h:379:6:   required from 'void std::unique_ptr<_Tp, _Dp>::swap(std::unique_ptr<_Tp, _Dp>&) [with _Tp = std::__future_base::_Result<void>; _Dp = std::__future_base::_Result_base::_Deleter]'
/usr/include/c++/7/future:1302:41:   required from here
/usr/include/c++/7/tuple:1219:2: error: invalid static_cast from type 'std::tuple<std::__future_base::_Result<void>*, std::__future_base::_Result_base::_Deleter>' to type 'std::tuple<std::__future_base::_Result<void>*, std::__future_base::_Result_base::_Deleter>::_Inherited& {aka int&}'
  static_cast<_Inherited&>(*this) = std::move(__in);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/7/bits/locale_conv.h:41:0,
                 from /usr/include/c++/7/locale:43,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from foo.cc:26:
/usr/include/c++/7/bits/unique_ptr.h: In instantiation of 'std::__uniq_ptr_impl<_Tp, _Dp>::pointer std::__uniq_ptr_impl<_Tp, _Dp>::_M_ptr() const [with _Tp = std::__future_base::_Result<void>; _Dp = std::__future_base::_Result_base::_Deleter; std::__uniq_ptr_impl<_Tp, _Dp>::pointer = std::__future_base::_Result<void>*]':
/usr/include/c++/7/bits/unique_ptr.h:332:28:   required from 'std::unique_ptr<_Tp, _Dp>::pointer std::unique_ptr<_Tp, _Dp>::get() const [with _Tp = std::__future_base::_Result<void>; _Dp = std::__future_base::_Result_base::_Deleter; std::unique_ptr<_Tp, _Dp>::pointer = std::__future_base::_Result<void>*]'
/usr/include/c++/7/bits/unique_ptr.h:354:19:   required from 'std::unique_ptr<_Tp, _Dp>::pointer std::unique_ptr<_Tp, _Dp>::release() [with _Tp = std::__future_base::_Result<void>; _Dp = std::__future_base::_Result_base::_Deleter; std::unique_ptr<_Tp, _Dp>::pointer = std::__future_base::_Result<void>*]'
/usr/include/c++/7/bits/unique_ptr.h:234:18:   required from 'std::unique_ptr<_Tp, _Dp>::unique_ptr(std::unique_ptr<_Tp, _Dp>&&) [with _Tp = std::__future_base::_Result<void>; _Dp = std::__future_base::_Result_base::_Deleter]'
/usr/include/c++/7/future:1263:40:   required from here
/usr/include/c++/7/bits/unique_ptr.h:147:53: error: no matching function for call to 'get<0>(const std::tuple<std::__future_base::_Result<void>*, std::__future_base::_Result_base::_Deleter>&)'
       pointer    _M_ptr() const { return std::get<0>(_M_t); }
                                          ~~~~~~~~~~~^~~~~~
In file included from /usr/include/c++/7/algorithm:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from foo.cc:26:
/usr/include/c++/7/utility:225:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int& std::get(std::pair<_Tp1, _Tp2>&)
     get(std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:225:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:230:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr int&& std::get(std::pair<_Tp1, _Tp2>&&)
     get(std::pair<_Tp1, _Tp2>&& __in) noexcept
     ^~~
/usr/include/c++/7/utility:230:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/utility:235:5: note: candidate: template<<declaration error>, class _Tp1, class _Tp2> constexpr const int& std::get(const std::pair<_Tp1, _Tp2>&)
     get(const std::pair<_Tp1, _Tp2>& __in) noexcept
     ^~~
/usr/include/c++/7/utility:235:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from foo.cc:26:
/usr/include/c++/7/array:307:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp& std::get(int&)
     get(array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:307:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:316:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr _Tp&& std::get(int&&)
     get(array<_Tp, _Nm>&& __arr) noexcept
     ^~~
/usr/include/c++/7/array:316:5: note:   template argument deduction/substitution failed:
/usr/include/c++/7/array:324:5: note: candidate: template<<declaration error>, class _Tp, <declaration error> > constexpr const _Tp& std::get(const int&)
     get(const array<_Tp, _Nm>& __arr) noexcept
     ^~~
/usr/include/c++/7/array:324:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/7/bits/shared_ptr.h:52:0,
                 from /usr/include/c++/7/memory:81,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:82,
                 from foo.cc:26:
/usr/include/c++/7/bits/shared_ptr_base.h: In instantiation of 'std::__shared_count<_Lp>::__shared_count(std::_Sp_make_shared_tag, _Tp*, const _Alloc&, _Args&& ...) [with _Tp = std::mutex; _Alloc = std::allocator<std::mutex>; _Args = {}; __gnu_cxx::_Lock_policy _Lp = (__gnu_cxx::_Lock_policy)2]':
/usr/include/c++/7/bits/shared_ptr_base.h:1295:35:   required from 'std::__shared_ptr<_Tp, _Lp>::__shared_ptr(std::_Sp_make_shared_tag, const _Alloc&, _Args&& ...) [with _Alloc = std::allocator<std::mutex>; _Args = {}; _Tp = std::mutex; __gnu_cxx::_Lock_policy _Lp = (__gnu_cxx::_Lock_policy)2]'
/usr/include/c++/7/bits/shared_ptr.h:344:64:   required from 'std::shared_ptr<_Tp>::shared_ptr(std::_Sp_make_shared_tag, const _Alloc&, _Args&& ...) [with _Alloc = std::allocator<std::mutex>; _Args = {}; _Tp = std::mutex]'
/usr/include/c++/7/bits/shared_ptr.h:690:14:   required from 'std::shared_ptr<_Tp> std::allocate_shared(const _Alloc&, _Args&& ...) [with _Tp = std::mutex; _Alloc = std::allocator<std::mutex>; _Args = {}]'
/usr/include/c++/7/bits/shared_ptr.h:706:39:   required from 'std::shared_ptr<_Tp> std::make_shared(_Args&& ...) [with _Tp = std::mutex; _Args = {}]'
/usr/include/c++/7/condition_variable:233:65:   required from here
/usr/include/c++/7/bits/shared_ptr_base.h:637:4: error: no matching function for call to 'operator new(sizetype, _Sp_cp_type*&)'
    ::new (__mem) _Sp_cp_type(std::move(__a),
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         std::forward<_Args>(__args)...);
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<built-in>: note: candidate: void* operator new(long unsigned int)
<built-in>: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/7/bits/shared_ptr_base.h:640:12: error: no match for 'operator=' (operand types are 'std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<std::mutex, std::allocator<std::mutex>, (__gnu_cxx::_Lock_policy)2> > >' and 'std::nullptr_t')
    __guard = nullptr;
    ~~~~~~~~^~~~~~~~~
In file included from /usr/include/c++/7/bits/stl_list.h:63:0,
                 from /usr/include/c++/7/list:63,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:79,
                 from foo.cc:26:
/usr/include/c++/7/bits/allocated_ptr.h:46:12: note: candidate: std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<std::mutex, std::allocator<std::mutex>, (__gnu_cxx::_Lock_policy)2> > >& std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<std::mutex, std::allocator<std::mutex>, (__gnu_cxx::_Lock_policy)2> > >::operator=(const std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<std::mutex, std::allocator<std::mutex>, (__gnu_cxx::_Lock_policy)2> > >&) <deleted>
     struct __allocated_ptr
            ^~~~~~~~~~~~~~~
/usr/include/c++/7/bits/allocated_ptr.h:46:12: note:   no known conversion for argument 1 from 'std::nullptr_t' to 'const std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<std::mutex, std::allocator<std::mutex>, (__gnu_cxx::_Lock_policy)2> > >&'
In file included from /usr/include/c++/7/bits/shared_ptr.h:52:0,
                 from /usr/include/c++/7/memory:81,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:82,
                 from foo.cc:26:
/usr/include/c++/7/bits/shared_ptr_base.h: In instantiation of 'std::__shared_count<_Lp>::__shared_count(std::_Sp_make_shared_tag, _Tp*, const _Alloc&, _Args&& ...) [with _Tp = std::__future_base::_State_baseV2; _Alloc = std::allocator<std::__future_base::_State_baseV2>; _Args = {}; __gnu_cxx::_Lock_policy _Lp = (__gnu_cxx::_Lock_policy)2]':
/usr/include/c++/7/bits/shared_ptr_base.h:1295:35:   required from 'std::__shared_ptr<_Tp, _Lp>::__shared_ptr(std::_Sp_make_shared_tag, const _Alloc&, _Args&& ...) [with _Alloc = std::allocator<std::__future_base::_State_baseV2>; _Args = {}; _Tp = std::__future_base::_State_baseV2; __gnu_cxx::_Lock_policy _Lp = (__gnu_cxx::_Lock_policy)2]'
/usr/include/c++/7/bits/shared_ptr.h:344:64:   required from 'std::shared_ptr<_Tp>::shared_ptr(std::_Sp_make_shared_tag, const _Alloc&, _Args&& ...) [with _Alloc = std::allocator<std::__future_base::_State_baseV2>; _Args = {}; _Tp = std::__future_base::_State_baseV2]'
/usr/include/c++/7/bits/shared_ptr.h:690:14:   required from 'std::shared_ptr<_Tp> std::allocate_shared(const _Alloc&, _Args&& ...) [with _Tp = std::__future_base::_State_baseV2; _Alloc = std::allocator<std::__future_base::_State_baseV2>; _Args = {}]'
/usr/include/c++/7/bits/shared_ptr.h:706:39:   required from 'std::shared_ptr<_Tp> std::make_shared(_Args&& ...) [with _Tp = std::__future_base::_State_baseV2; _Args = {}]'
/usr/include/c++/7/future:1257:44:   required from here
/usr/include/c++/7/bits/shared_ptr_base.h:637:4: error: no matching function for call to 'operator new(sizetype, _Sp_cp_type*&)'
    ::new (__mem) _Sp_cp_type(std::move(__a),
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         std::forward<_Args>(__args)...);
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<built-in>: note: candidate: void* operator new(long unsigned int)
<built-in>: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/7/bits/shared_ptr_base.h:640:12: error: no match for 'operator=' (operand types are 'std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<std::__future_base::_State_baseV2, std::allocator<std::__future_base::_State_baseV2>, (__gnu_cxx::_Lock_policy)2> > >' and 'std::nullptr_t')
    __guard = nullptr;
    ~~~~~~~~^~~~~~~~~
In file included from /usr/include/c++/7/bits/stl_list.h:63:0,
                 from /usr/include/c++/7/list:63,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:79,
                 from foo.cc:26:
/usr/include/c++/7/bits/allocated_ptr.h:46:12: note: candidate: std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<std::__future_base::_State_baseV2, std::allocator<std::__future_base::_State_baseV2>, (__gnu_cxx::_Lock_policy)2> > >& std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<std::__future_base::_State_baseV2, std::allocator<std::__future_base::_State_baseV2>, (__gnu_cxx::_Lock_policy)2> > >::operator=(const std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<std::__future_base::_State_baseV2, std::allocator<std::__future_base::_State_baseV2>, (__gnu_cxx::_Lock_policy)2> > >&) <deleted>
     struct __allocated_ptr
            ^~~~~~~~~~~~~~~
/usr/include/c++/7/bits/allocated_ptr.h:46:12: note:   no known conversion for argument 1 from 'std::nullptr_t' to 'const std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<std::__future_base::_State_baseV2, std::allocator<std::__future_base::_State_baseV2>, (__gnu_cxx::_Lock_policy)2> > >&'
foo.cc:38:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&T);
     ~~~~~^~~~~~~~~
foo.cc:40:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld %lld",&m,&k);
         ~~~~~^~~~~~~~~~~~~~~~~~~
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信息

递交者
类型
递交
题目
P2042 迷宫
语言
C++
递交时间
2021-08-01 08:40:31
评测时间
2021-08-01 08:40:31
评测机
分数
0
总耗时
0ms
峰值内存
0 Bytes