foo.cc: In function 'int dfs(int)':
foo.cc:25:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<e[x].size();i++)
~^~~~~~~~~~~~
foo.cc:31:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<st.size();i++)
~^~~~~~~~~~
自豪的采用 HydroJudge 进行评测(github.com/hydro-dev/HydroJudge)
{"receive":"2020-07-21T03:09:31.029Z","handle":"2020-07-21T03:09:31.029Z","cache_start":"2020-07-21T03:09:31.036Z","read_cases":"2020-07-21T03:09:31.144Z","judge":"2020-07-21T03:09:31.144Z","done":"2020-07-21T03:09:31.721Z"}