/in/foo.cc: In function 'int main()':
/in/foo.cc:47:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   for(int j=0;j<m;j++)
   ^~~
/in/foo.cc:53:4: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
    cout<<ans<<endl;
    ^~~~