foo.cc: In function 'long long int dfs(long long int, long long int)':
foo.cc:18:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
foo.cc: In function 'int main()':
foo.cc:20:18: warning: variable 'size' set but not used [-Wunused-but-set-variable]
  long long n,i,j,size,a,b,Max;
                  ^~~~

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

正在同步测试数据，请稍后
{"receive":"2020-07-24T08:39:32.023Z","handle":"2020-07-24T08:39:32.023Z","cache_start":"2020-07-24T08:39:32.029Z","read_cases":"2020-07-24T08:39:32.524Z","judge":"2020-07-24T08:39:32.524Z","done":"2020-07-24T08:39:39.267Z"}