foo.cc: In function 'int main()':
foo.cc:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 |     scanf("%d%d",&m,&n);
      |     ~~~~~^~~~~~~~~~~~~~
foo.cc:12:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   12 |     for ( i=1 ; i<=n ; i++ ) scanf("%d%d",&w[i],&c[i]);
      |                              ~~~~~^~~~~~~~~~~~~~~~~~~~

Found 10 testcases.
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