foo.cc: In function 'int main()':
foo.cc:34:27: warning: format '%d' expects argument of type 'int', but argument 2 has type 'int*' [-Wformat=]
   34 |                 printf("%1d", &g[i][j]);
      |                         ~~^   ~~~~~~~~
      |                           |   |
      |                           int int*
      |                         %1n

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