foo.cc: In function 'int main()':
foo.cc:21:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   21 |         scanf("%d%d",&n,&k);
      |         ~~~~~^~~~~~~~~~~~~~
foo.cc:25:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   25 |          scanf("%d",&q[i].m);
      |          ~~~~~^~~~~~~~~~~~~~
foo.cc:27:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   27 |          scanf("%d",&q[i].b);
      |          ~~~~~^~~~~~~~~~~~~~

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