foo.cc: In function 'void dts::main()':
foo.cc:168:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  168 |         scanf("%lld%lld%lld",&n,&m,&q);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
foo.cc:178:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  178 |             scanf("%lld%lld",&x,&y);
      |             ~~~~~^~~~~~~~~~~~~~~~~~

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