传送门 Closest Common Ancestors Time Limit: 2000MS   Memory Limit: 10000K Total Submissions: 14915   Accepted: 4745 Description Write a program that takes as input a rooted tree and a list of pairs of vertices. For each pair (u,v) the program determines…

LCA问题,用了离线的tarjan算法.输入输出参考了博客http://www.cnblogs.com/rainydays/archive/2011/06/20/2085503.htmltarjan算法是用了dfs+并查集的方式做的.这里输入输出有个不错的地方,就是用scanf("%[^0-9]", st);跳过非数字.里面用数组g来表示多维的树,还用并查集的id数组的-1来表示是否访问. #include <iostream> #include <cstdio>…

非常裸的模版题,只是Tarjan要好好多拿出来玩味几次 非常有点巧妙呢,tarjan,大概就是当前结点和它儿子结点的羁绊 WA了俩小时,,,原因是,这个题是多数据的(还没告诉你T,用scanf!=EOF来控制结束),更重要的是和这个和Codeforces不一样,Codeforces的多组数据好像会又一次開始程序似的,不用在程序里面写清零,但这个题是多数据用EOF来控制输入的,多数据在一个文件中都一次输进去了,所以要memset btw,加上一点memset代码,多了700B代码... #incl…

POJ 1470 Closest Common Ancestors(最近公共祖先 LCA) Description Write a program that takes as input a rooted tree and a list of pairs of vertices. For each pair (u,v) the program determines the closest common ancestor of u and v in the tree. The closest co…

Closest Common Ancestors Time Limit: 2000MS   Memory Limit: 10000K Total Submissions: 13370   Accepted: 4338 Description Write a program that takes as input a rooted tree and a list of pairs of vertices. For each pair (u,v) the program determines the…

传送门 Closest Common Ancestors Time Limit: 2000MS   Memory Limit: 10000K Total Submissions: 17306   Accepted: 5549 Description Write a program that takes as input a rooted tree and a list of pairs of vertices. For each pair (u,v) the program determines…

Closest Common Ancestors Time Limit: 2000MS   Memory Limit: 10000K Total Submissions: 15446   Accepted: 4944 Description Write a program that takes as input a rooted tree and a list of pairs of vertices. For each pair (u,v) the program determines the…

Closest Common Ancestors Time Limit: 2000MS   Memory Limit: 10000K Total Submissions: 13372   Accepted: 4340 Description Write a program that takes as input a rooted tree and a list of pairs of vertices. For each pair (u,v) the program determines the…

任意门:http://poj.org/problem?id=1470 Closest Common Ancestors Time Limit: 2000MS   Memory Limit: 10000K Total Submissions: 22519   Accepted: 7137 Description Write a program that takes as input a rooted tree and a list of pairs of vertices. For each pa…

Closest Common Ancestors Time Limit: 2000ms Memory Limit: 10000KB This problem will be judged on PKU. Original ID: 147064-bit integer IO format: %lld      Java class name: Main     Write a program that takes as input a rooted tree and a list of pairs…