foo.cc: In function 'int main()':
foo.cc:91:6: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
    if(!flag&&liecnt<=n&&liecnt+unknown>=n)
      ^

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":"2020-07-21T01:13:10.262Z","handle":"2020-07-21T01:13:10.262Z","cache_start":"2020-07-21T01:13:10.268Z","read_cases":"2020-07-21T01:13:10.827Z","judge":"2020-07-21T01:13:10.827Z","done":"2020-07-21T01:13:11.343Z"}