foo.cc: In function 'int mcmf()':
foo.cc:121:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^

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

{"receive":"2020-07-27T08:18:47.475Z","handle":"2020-07-27T08:18:47.476Z","done":"2020-07-27T08:18:48.168Z"}