foo.cc: In function 'int fj(long long int)':
foo.cc:18:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   18 |     for (set <ll> :: iterator it = ys.begin () ; it != ys.end () ; it ++ )
      |     ^~~
foo.cc:24:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   24 |         if (odd > even) return 1;
      |         ^~

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