http://poj.org/problem?id=2942 题意:n个武士,某些武士之间相互仇视,如果在一起容易发生争斗事件.所以他们只有满足一定的条件才能参加圆桌会议:(1)相互仇视的两个武士不能相邻 (2)同一个圆桌边上的武士数量必须是奇数.输出需要剔除的武士人数.  / \    思路:根据图中的关系建立该图的补图,(Tarjan算法)求出图中的双连通分量,判断每个双连通分量中是否存在奇圈,若存在奇圈则该连通分量中的武士都符合条件,否则都不符合        |.| 判断奇圈的方法:由于…

Being a knight is a very attractive career: searching for the Holy Grail, saving damsels in distress, and drinking with the other knights are fun things to do. Therefore, it is not very surprising that in recent years the kingdom of King Arthur has e…

[POJ 2942]Knights of the Round Table(双联通分量+染色判奇环) Time Limit: 7000MS   Memory Limit: 65536K Total Submissions: 11661   Accepted: 3824 Description Being a knight is a very attractive career: searching for the Holy Grail, saving damsels in distress, an…

Description Being a knight is a very attractive career: searching for the Holy Grail, saving damsels in distress, and drinking with the other knights are fun things to do. Therefore, it is not very surprising that in recent years the kingdom of King…

http://poj.org/problem?id=2942 各种逗.... 翻译白书上有:看了白书和网上的标程,学习了..orz. 双连通分量就是先找出割点,然后用个栈在找出割点前维护子树,最后如果这个是割点那么子树就都是双连通分量,然后本题求的是奇圈,那么就进行黑白染色,判断是否为奇圈即可.将不是奇圈的所有双连通分量的点累计起来即可. #include <cstdio> #include <cstring> #include <cmath> #include <…

Knights of the Round Table Being a knight is a very attractive career: searching for the Holy Grail, saving damsels in distress, and drinking with the other knights are fun things to do. Therefore, it is not very surprising that in recent years the k…

POJ2942 洛谷UVA1364(博主没有翻墙uva实在是太慢了) 以骑士为结点建立无向图,两个骑士间存在边表示两个骑士可以相邻(用邻接矩阵存图,初始化全为1,读入一对憎恨关系就删去一条边即可),则题意变为求图中不在任何奇环(结点数为奇数的环)中的点的数量. 一个环上的点一定属于一个双连通分量(两两都有两条路径可达) 那么什么时候双连通分量中没有奇环呢? 显然,当双连通分量是二分图的时候,图中没有奇环,因为从一个点出发回到该点一定要经过偶数条边. 即非二分图的双连通分量一定含有奇环 那么,非二…

Knights of the Round Table Time Limit: 7000MS   Memory Limit: 65536K Total Submissions: 10911   Accepted: 3587 Description Being a knight is a very attractive career: searching for the Holy Grail, saving damsels in distress, and drinking with the oth…

Knights of the Round Table Time Limit: 7000MS   Memory Limit: 65536K Total Submissions: 9169   Accepted: 2960 Description Being a knight is a very attractive career: searching for the Holy Grail, saving damsels in distress, and drinking with the othe…

Time Limit: 7000MS   Memory Limit: 65536K Total Submissions: 13954   Accepted: 4673 Description Being a knight is a very attractive career: searching for the Holy Grail, saving damsels in distress, and drinking with the other knights are fun things t…