/in/foo.cc: In function 'int main()':
/in/foo.cc:22:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if (n < m) return printf ("0\n"), 0; n -= m;
  ^~
/in/foo.cc:22:39: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  if (n < m) return printf ("0\n"), 0; n -= m;
                                       ^