B:A Problem about Tree 总时间限制: 1000ms 内存限制: 65536kB 描述 Given a tree with Nvertices and N- 1 edges, you are to answer Qqueries on "which vertex isY's parent if we choose Xas the ro
链接: http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=1338 题目: Problem E Connect the Campus Input: standard input Output: standard out