foo.c: In function 'main':
foo.c:34:28: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'int' [-Wformat=]
   34 |                 printf("%lld\n",total);
      |                         ~~~^    ~~~~~
      |                            |    |
      |                            |    int
      |                            long long int
      |                         %d

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