/in/foo.cc: In function 'void dfs(int)':
/in/foo.cc:12:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < G[u].size(); i++)
                    ~~^~~~~~~~~~~~~
/in/foo.cc:12:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int i = 0; i < G[u].size(); i++)
     ^~~
/in/foo.cc:14:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  vs.push_back(u);
  ^~
/in/foo.cc: In function 'void rdfs(int)':
/in/foo.cc:19:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < rG[u].size(); i++)
                    ~~^~~~~~~~~~~~~~

VJ4Error('ProblemDataNotFoundError', '题目 590c9c2bd3d8a13210993b33 的数据未找到。', 'newbzoj', '590c9c2bd3d8a13210993b33')