Position:http://oj.changjun.com.cn/contest.php?cid=4 A经典题目 // <A.cpp> - Sun Oct 9 15:28:01 2016 // This file is made by YJinpeng,created by XuYike's black technology automatically. // Copyright (C) 2016 ChangJun High School, Inc. // I don't know wha…
POJ 1986 Distance Queries / UESTC 256 Distance Queries / CJOJ 1129 [USACO]距离咨询(最近公共祖先) Description Farmer John's cows refused to run in his marathon since he chose a path much too long for their leisurely lifestyle. He therefore wants to find a path…