foo.cc: In function 'void buildQueue()':
foo.cc:22:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |       scanf("%d%d", &k, &p);
      |       ~~~~~^~~~~~~~~~~~~~~~
foo.cc:34:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   34 |   scanf("%d", &M);
      |   ~~~~~^~~~~~~~~~
foo.cc:37:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   37 |       scanf("%d", &x);
      |       ~~~~~^~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:48:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   48 |   scanf("%d", &N);
      |   ~~~~~^~~~~~~~~~

Found 5 testcases.
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