/in/foo.cc: In function 'void solve()':
/in/foo.cc:71:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int mid = l + r + 1 >> 1;
               ~~~~~~^~~
/in/foo.cc:91:27: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=]
   printf("%d\n", vp.size());
                           ^
/in/foo.cc:95:29: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=]
   printf("\n%d\n", vq.size());
                             ^