System Error
/in/foo.cc: In function 'void dfs(int)':
/in/foo.cc:13:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
#define FOR1(i,n,m) for(int i=(n);i<=(m);i++)
^
/in/foo.cc:45:2: note: in expansion of macro 'FOR1'
FOR1(i,0,(G[u].size()-1))
^~~~
VJ4Error('ProblemDataNotFoundError', '题目 590c9891d3d8a1321099379b 的数据未找到。', 'newbzoj', '590c9891d3d8a1321099379b')
