/in/foo.cc:1:17: warning: extra tokens at end of #include directive
 #include<cstdio>  
                 ^
/in/foo.cc:2:20: warning: extra tokens at end of #include directive
 #include<algorithm>  
                    ^
/in/foo.cc:3:6: error: stray '\302' in program
 using namespace std;  
      ^
/in/foo.cc:3:7: error: stray '\240' in program
 using namespace std;  
       ^
/in/foo.cc:3:17: error: stray '\302' in program
 using namespace std;  
                 ^
/in/foo.cc:3:18: error: stray '\240' in program
 using namespace std;  
                  ^
/in/foo.cc:3:23: error: stray '\302' in program
 using namespace std;  
                       ^
/in/foo.cc:3:24: error: stray '\240' in program
 using namespace std;  
                        ^
/in/foo.cc:3:25: error: stray '\302' in program
 using namespace std;  
                         ^
/in/foo.cc:3:26: error: stray '\240' in program
 using namespace std;  
                          ^
/in/foo.cc:4:1: error: stray '\302' in program
   
 ^
/in/foo.cc:4:2: error: stray '\240' in program
   
  ^
/in/foo.cc:4:3: error: stray '\302' in program
   
   ^
/in/foo.cc:4:4: error: stray '\240' in program
   
    ^
/in/foo.cc:5:6: error: stray '\302' in program
 const int maxn=1e3;  
      ^
/in/foo.cc:5:7: error: stray '\240' in program
 const int maxn=1e3;  
       ^
/in/foo.cc:5:11: error: stray '\302' in program
 const int maxn=1e3;  
           ^
/in/foo.cc:5:12: error: stray '\240' in program
 const int maxn=1e3;  
            ^
/in/foo.cc:5:22: error: stray '\302' in program
 const int maxn=1e3;  
                      ^
/in/foo.cc:5:23: error: stray '\240' in program
 const int maxn=1e3;  
                       ^
/in/foo.cc:5:24: error: stray '\302' in program
 const int maxn=1e3;  
                        ^
/in/foo.cc:5:25: error: stray '\240' in program
 const int maxn=1e3;  
                         ^
/in/foo.cc:6:7: error: stray '\302' in program
 struct tnode{int x,y;}p[maxn+20];  
       ^
/in/foo.cc:6:8: error: stray '\240' in program
 struct tnode{int x,y;}p[maxn+20];  
        ^
/in/foo.cc:6:18: error: stray '\302' in program
 struct tnode{int x,y;}p[maxn+20];  
                  ^
/in/foo.cc:6:19: error: stray '\240' in program
 struct tnode{int x,y;}p[maxn+20];  
                   ^
/in/foo.cc:6:36: error: stray '\302' in program
 struct tnode{int x,y;}p[maxn+20];  
                                    ^
/in/foo.cc:6:37: error: stray '\240' in program
 struct tnode{int x,y;}p[maxn+20];  
                                     ^
/in/foo.cc:6:38: error: stray '\302' in program
 struct tnode{int x,y;}p[maxn+20];  
                                      ^
/in/foo.cc:6:39: error: stray '\240' in program
 struct tnode{int x,y;}p[maxn+20];  
                                       ^
/in/foo.cc:7:4: error: stray '\302' in program
 int row[maxn+20],column[maxn+20];  
    ^
/in/foo.cc:7:5: error: stray '\240' in program
 int row[maxn+20],column[maxn+20];  
     ^
/in/foo.cc:7:35: error: stray '\302' in program
 int row[maxn+20],column[maxn+20];  
                                   ^
/in/foo.cc:7:36: error: stray '\240' in program
 int row[maxn+20],column[maxn+20];  
                                    ^
/in/foo.cc:7:37: error: stray '\302' in program
 int row[maxn+20],column[maxn+20];  
                                     ^
/in/foo.cc:7:38: error: stray '\240' in program
 int row[maxn+20],column[maxn+20];  
                                      ^
/in/foo.cc:8:1: error: stray '\302' in program
   
 ^
/in/foo.cc:8:2: error: stray '\240' in program
   
  ^
/in/foo.cc:8:3: error: stray '\302' in program
   
   ^
/in/foo.cc:8:4: error: stray '\240' in program
   
    ^
/in/foo.cc:9:5: error: stray '\302' in program
 bool cmp1(tnode a,tnode b)  
     ^
/in/foo.cc:9:6: error: stray '\240' in program
 bool cmp1(tnode a,tnode b)  
      ^
/in/foo.cc:9:17: error: stray '\302' in program
 bool cmp1(tnode a,tnode b)  
                 ^
/in/foo.cc:9:18: error: stray '\240' in program
 bool cmp1(tnode a,tnode b)  
                  ^
/in/foo.cc:9:26: error: stray '\302' in program
 bool cmp1(tnode a,tnode b)  
                          ^
/in/foo.cc:9:27: error: stray '\240' in program
 bool cmp1(tnode a,tnode b)  
                           ^
/in/foo.cc:9:30: error: stray '\302' in program
 bool cmp1(tnode a,tnode b)  
                              ^
/in/foo.cc:9:31: error: stray '\240' in program
 bool cmp1(tnode a,tnode b)  
                               ^
/in/foo.cc:9:32: error: stray '\302' in program
 bool cmp1(tnode a,tnode b)  
                                ^
/in/foo.cc:9:33: error: stray '\240' in program
 bool cmp1(tnode a,tnode b)  
                                 ^
/in/foo.cc:10:2: error: stray '\302' in program
 {  
  ^
/in/foo.cc:10:3: error: stray '\240' in program
 {  
   ^
/in/foo.cc:10:4: error: stray '\302' in program
 {  
    ^
/in/foo.cc:10:5: error: stray '\240' in program
 {  
     ^
/in/foo.cc:11:1: error: stray '\302' in program
   return a.x>b.x;  
 ^
/in/foo.cc:11:2: error: stray '\240' in program
   return a.x>b.x;  
  ^
/in/foo.cc:11:3: error: stray '\302' in program
   return a.x>b.x;  
   ^
/in/foo.cc:11:4: error: stray '\240' in program
   return a.x>b.x;  
    ^
/in/foo.cc:11:11: error: stray '\302' in program
   return a.x>b.x;  
           ^
/in/foo.cc:11:12: error: stray '\240' in program
   return a.x>b.x;  
            ^
/in/foo.cc:11:21: error: stray '\302' in program
   return a.x>b.x;  
                     ^
/in/foo.cc:11:22: error: stray '\240' in program
   return a.x>b.x;  
                      ^
/in/foo.cc:11:23: error: stray '\302' in program
   return a.x>b.x;  
                       ^
/in/foo.cc:11:24: error: stray '\240' in program
   return a.x>b.x;  
                        ^
/in/foo.cc:12:2: error: stray '\302' in program
 }  
  ^
/in/foo.cc:12:3: error: stray '\240' in program
 }  
   ^
/in/foo.cc:12:4: error: stray '\302' in program
 }  
    ^
/in/foo.cc:12:5: error: stray '\240' in program
 }  
     ^
/in/foo.cc:13:1: error: stray '\302' in program
   
 ^
/in/foo.cc:13:2: error: stray '\240' in program
   
  ^
/in/foo.cc:13:3: error: stray '\302' in program
   
   ^
/in/foo.cc:13:4: error: stray '\240' in program
   
    ^
/in/foo.cc:14:5: error: stray '\302' in program
 bool cmp2(tnode a,tnode b)  
     ^
/in/foo.cc:14:6: error: stray '\240' in program
 bool cmp2(tnode a,tnode b)  
      ^
/in/foo.cc:14:17: error: stray '\302' in program
 bool cmp2(tnode a,tnode b)  
                 ^
/in/foo.cc:14:18: error: stray '\240' in program
 bool cmp2(tnode a,tnode b)  
                  ^
/in/foo.cc:14:26: error: stray '\302' in program
 bool cmp2(tnode a,tnode b)  
                          ^
/in/foo.cc:14:27: error: stray '\240' in program
 bool cmp2(tnode a,tnode b)  
                           ^
/in/foo.cc:14:30: error: stray '\302' in program
 bool cmp2(tnode a,tnode b)  
                              ^
/in/foo.cc:14:31: error: stray '\240' in program
 bool cmp2(tnode a,tnode b)  
                               ^
/in/foo.cc:14:32: error: stray '\302' in program
 bool cmp2(tnode a,tnode b)  
                                ^
/in/foo.cc:14:33: error: stray '\240' in program
 bool cmp2(tnode a,tnode b)  
                                 ^
/in/foo.cc:15:2: error: stray '\302' in program
 {  
  ^
/in/foo.cc:15:3: error: stray '\240' in program
 {  
   ^
/in/foo.cc:15:4: error: stray '\302' in program
 {  
    ^
/in/foo.cc:15:5: error: stray '\240' in program
 {  
     ^
/in/foo.cc:16:1: error: stray '\302' in program
   return a.y<b.y;  
 ^
/in/foo.cc:16:2: error: stray '\240' in program
   return a.y<b.y;  
  ^
/in/foo.cc:16:3: error: stray '\302' in program
   return a.y<b.y;  
   ^
/in/foo.cc:16:4: error: stray '\240' in program
   return a.y<b.y;  
    ^
/in/foo.cc:16:11: error: stray '\302' in program
   re