foo.cc: In function 'int main()':
foo.cc:5:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&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":"2020-07-13T14:05:04.498Z","handle":"2020-07-13T14:05:04.498Z","cache_start":"2020-07-13T14:05:04.530Z","read_cases":"2020-07-13T14:05:05.064Z","judge":"2020-07-13T14:05:05.065Z","done":"2020-07-13T14:05:07.711Z"}