foo.cc: In function 'int main()':
foo.cc:5:24: 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 HydroJudger 进行评测(github.com/hydro-dev/HydroJudger)

{"receive":"2020-05-12T14:40:40.043Z","handle":"2020-05-12T14:40:40.043Z","cache_start":"2020-05-12T14:40:40.052Z","read_cases":"2020-05-12T14:40:40.182Z","judge":"2020-05-12T14:40:40.183Z","done":"2020-05-12T14:40:40.303Z"}