foo.cc: In function 'int fz(int, int, int)':
foo.cc:38:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
foo.cc:8:9: warning: 'i' is used uninitialized in this function [-Wuninitialized]
  while(i<=j)
        ~^~~
foo.cc:8:9: warning: 'j' is used uninitialized in this function [-Wuninitialized]

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

{"receive":"2020-07-10T07:27:14.392Z","handle":"2020-07-10T07:27:14.392Z","cache_start":"2020-07-10T07:27:14.398Z","read_cases":"2020-07-10T07:27:14.525Z","judge":"2020-07-10T07:27:14.525Z","done":"2020-07-10T07:27:15.913Z"}