foo.cc:2:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){puts("Hello, World!");}
      ^

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

{"receive":"2020-08-08T14:32:09.636Z","handle":"2020-08-08T14:32:09.636Z","cache_start":"2020-08-08T14:32:09.643Z","read_cases":"2020-08-08T14:32:09.846Z","judge":"2020-08-08T14:32:09.846Z","done":"2020-08-08T14:32:09.982Z"}