foo.cc: In function 'int main()':
foo.cc:37:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   37 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
foo.cc:40:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   40 |   scanf("%lld%lld",&a,&b);
      |   ~~~~~^~~~~~~~~~~~~~~~~~
foo.cc:57:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   57 |  scanf("%lld%lld%lld",&x,&y,&z);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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Found 5 testcases.
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