foo.cc: In function 'int main()':
foo.cc:25:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   25 |             scanf("%d", &s[i]);
      |             ~~~~~^~~~~~~~~~~~~
foo.cc:28:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   28 |             scanf("%d%d%d", &u, &v, &w);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~
foo.cc:32:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   32 |         scanf("%d", &q);
      |         ~~~~~^~~~~~~~~~
foo.cc:36:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   36 |             scanf("%d%d", &u, &v);
      |             ~~~~~^~~~~~~~~~~~~~~~

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