/in/foo.cc: In function 'int main()':
/in/foo.cc:19:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int i=0;i<=m;i++)f[0][i]=0;for(int i=0;i<=n;i++)f[i][0]=0;
     ^~~
/in/foo.cc:19:36: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
     for(int i=0;i<=m;i++)f[0][i]=0;for(int i=0;i<=n;i++)f[i][0]=0;
                                    ^~~