foo.cc: In function 'int main()':
foo.cc:8:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    8 | scanf("%d", &n);
      | ~~~~~^~~~~~~~~~
foo.cc:10:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   10 | scanf("%d", &a[i]);
      | ~~~~~^~~~~~~~~~~~~
foo.cc:20:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   20 | scanf("%d", &t);
      | ~~~~~^~~~~~~~~~
foo.cc:22:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 | scanf("%lld", &m);
      | ~~~~~^~~~~~~~~~~~

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