foo.cc: In function 'int main()':
foo.cc:6:7: 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 HydroJudge 进行评测(github.com/hydro-dev/HydroJudge)

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识别到10个测试点
{"receive":"2020-07-23T05:42:12.136Z","handle":"2020-07-23T05:42:12.136Z","cache_start":"2020-07-23T05:42:12.142Z","read_cases":"2020-07-23T05:42:12.544Z","judge":"2020-07-23T05:42:12.545Z","done":"2020-07-23T05:42:13.830Z"}