foo.cc: In function 'int main()':
foo.cc:4:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &x, &y);
  ~~~~~^~~~~~~~~~~~~~~~~

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

{"receive":"2020-06-14T12:13:12.013Z","handle":"2020-06-14T12:13:12.013Z","cache_start":"2020-06-14T12:13:12.020Z","read_cases":"2020-06-14T12:13:12.176Z","judge":"2020-06-14T12:13:12.179Z","done":"2020-06-14T12:13:12.307Z"}