foo.cc: In function 'int main()':
foo.cc:87:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   87 | scanf("%d%d%d",&x,&y,&z);
      | ~~~~~^~~~~~~~~~~~~~~~~~~
foo.cc:95:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   95 | scanf("%d%d",&x,&y);
      | ~~~~~^~~~~~~~~~~~~~

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