foo.cc: In function 'int main()':
foo.cc:22:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |     scanf("%d%d%d",&n,&r,&q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
foo.cc:25:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   25 |     for(int i=1;i<=n;i++)scanf("%d",&s[i]);
      |                          ~~~~~^~~~~~~~~~~~
foo.cc:26:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   26 |     for(int i=1;i<=n;i++)scanf("%d",&w[i]);
      |                          ~~~~~^~~~~~~~~~~~

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