foo.cc: In function 'int main()':
foo.cc:57:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   57 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
foo.cc:61:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   61 |         scanf("%d%d%d",&y1,&y2,&h);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Found 10 testcases.
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