foo.cc: In function 'int main()':
foo.cc:59:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~

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

{"receive":"2020-06-27T06:45:27.850Z","handle":"2020-06-27T06:45:27.850Z","cache_start":"2020-06-27T06:45:27.858Z","read_cases":"2020-06-27T06:45:27.988Z","judge":"2020-06-27T06:45:27.991Z","done":"2020-06-27T06:45:29.039Z"}