foo.cc: In function 'int main()':
foo.cc:19:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
   19 |     printf("%d\n",f[sum]/2);
      |             ~^    ~~~~~~~~
      |              |          |
      |              int        long long int
      |             %lld
foo.cc:6:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    6 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~

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Found 10 testcases.
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