foo.cc: In function 'int main()':
foo.cc:38:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   38 |  scanf("%lld",&n);
      |  ~~~~~^~~~~~~~~~~
foo.cc:40:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   40 |  scanf("%lld",&num[i]);
      |  ~~~~~^~~~~~~~~~~~~~~~

Found 5 testcases.
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