foo.cc: In function 'int main(int, char**)':
foo.cc:6:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    6 |  scanf("%d %d",&n,&k);
      |  ~~~~~^~~~~~~~~~~~~~~
foo.cc:7:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    7 |  for(int i=0;i<n;i++) scanf("%d",&array[i]);
      |                       ~~~~~^~~~~~~~~~~~~~~~

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