foo.cc: In function 'int main()':
foo.cc:23:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   23 |  scanf("%d%d%d",&n,&m,&s);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~
foo.cc:26:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   26 |   scanf("%d%d%d",&x,&y,&z);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~

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