foo.cc: In function 'void tarjan(int)':
foo.cc:17:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<Edge[u].size();i++)
                 ~^~~~~~~~~~~~~~~
foo.cc:43:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int k=0;k<Edge[temp[j]].size();k++)
                         ~^~~~~~~~~~~~~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:66:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
         if(!out[i])
           ^

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

{"receive":"2020-07-09T11:51:48.980Z","handle":"2020-07-09T11:51:48.980Z","done":"2020-07-09T11:51:49.781Z"}