/in/foo.cc: In function 'void dfs(int)':
/in/foo.cc:45:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<q[x].size();i++)
                 ~^~~~~~~~~~~~
/in/foo.cc: In function 'void di(int)':
/in/foo.cc:59:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<rq[x].size();i++)
                 ~^~~~~~~~~~~~~
/in/foo.cc: In function 'void ddd(int, int)':
/in/foo.cc:68:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<q[x].size();i++)
                 ~^~~~~~~~~~~~

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