foo.cc: In function 'int main()':
foo.cc:46:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld %lld", &a, &b);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~

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

正在同步测试数据，请稍后
{"receive":"2020-07-07T14:02:23.283Z","handle":"2020-07-07T14:02:23.283Z","cache_start":"2020-07-07T14:02:23.290Z","read_cases":"2020-07-07T14:02:23.725Z","judge":"2020-07-07T14:02:23.725Z","done":"2020-07-07T14:02:25.993Z"}