foo.cc:1:22: warning: '#pragma GCC optimize' is not a string or number [-Wpragmas]
 #pragma GCC optimize(fast)
                      ^~~~

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

{"receive":"2020-05-23T07:27:49.707Z","handle":"2020-05-23T07:27:49.707Z","cache_start":"2020-05-23T07:27:49.714Z","read_cases":"2020-05-23T07:27:49.843Z","judge":"2020-05-23T07:27:49.843Z","done":"2020-05-23T07:27:52.351Z"}