foo.cc: In function 'int main()':
foo.cc:41:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     int T;scanf("%d",&T);
           ~~~~~^~~~~~~~~
foo.cc:43:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d",&n,&m,&d);
         ~~~~~^~~~~~~~~~~~~~~~~~~

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