/in/foo.c: In function 'main':
/in/foo.c:29:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long int' [-Wformat=]
   29 |     printf("%d", re);
      |             ~^   ~~
      |              |   |
      |              int long int
      |             %ld