foo.cc: In function 'int main()':
foo.cc:6:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  std::scanf("%d",&n);
  ~~~~~~~~~~^~~~~~~~~
foo.cc:9:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int temp; std::scanf("%d",&temp);
             ~~~~~~~~~~^~~~~~~~~~~~

自豪的采用 HydroJudge 进行评测(github.com/hydro-dev/HydroJudge)

{"receive":"2020-08-07T13:09:12.987Z","handle":"2020-08-07T13:09:12.987Z","cache_start":"2020-08-07T13:09:12.993Z","read_cases":"2020-08-07T13:09:13.130Z","judge":"2020-08-07T13:09:13.133Z","done":"2020-08-07T13:09:14.356Z"}