foo.cc: In function 'int main()':
foo.cc:24:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   24 |         scanf("%d%d",&n,&k);
      |         ~~~~~^~~~~~~~~~~~~~
foo.cc:28:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   28 |          scanf("%d",&q[i].m);
      |          ~~~~~^~~~~~~~~~~~~~
foo.cc:30:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   30 |          scanf("%d",&q[i].b);
      |          ~~~~~^~~~~~~~~~~~~~

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