foo.cc: In function 'int main()':
foo.cc:21:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   21 |  for(int i=0;i<=m+1;i++)
      |  ^~~
foo.cc:25:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   25 |   int ans=0;
      |   ^~~
foo.cc:20:6: warning: 'minn' may be used uninitialized in this function [-Wmaybe-uninitialized]
   20 |  int edge=minn-1;
      |      ^~~~

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