foo.cc: In function ‘int main()’:
foo.cc:21:49: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   21 |                                                 for(int j=sj;j<=ej;j++)
      |                                                 ^~~
foo.cc:22:70: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   22 |                                                         sum+=a[i][j];cnt++;
      |                                                                      ^~~

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