意甲冠军: 它需要一个特殊的图,以找到最大匹配.该图的特征是:无向图,度的每个节点3.这是一个双边连接组件(the graph is 2-edge-connected (that is, at least 2 edges need to be removed in order to make the graph disconnected) 这一点是这样理解的把..) 思路: 一般想法就直接建图求最大匹配,点的范围是5000,不优化可能超时,以下代码是890ms过的. 还有一种思路: 完备匹配的条…

Jimmy’s Assignment Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 464    Accepted Submission(s): 224 Problem Description Jimmy is studying Advanced Graph Algorithms at his university. His most…

结论源自实验测试,如果有疏漏希望指出 当Makefile中存在多个匹配的目标时,Makefile会采用哪个匹配的目标呢? 测试的Makefile如下: .PHONY: all clean quick_sort all: quick_sort bubble_sort #目标1 quick_sort: @echo "matching $@" @echo 'in quick_sort' #目标2 %: @echo "matching $@" @echo 'in %' #目…

Description Jimmy is studying Advanced Graph Algorithms at his university. His most recent assignment is to find a maximum matching in a special kind of graph. This graph is undirected, has N vertices and each vertex has degree 3. Furthermore, the gr…

题目链接: Poj 3189 Steady Cow Assignment 题目描述: 有n头奶牛,m个棚,每个奶牛对每个棚都有一个喜爱程度.当然啦,棚子也是有脾气的,并不是奶牛想住进来就住进来,超出棚子的最大容量了,棚子是拒绝的.现在要给每个奶牛安家,本宝宝是一个公正无私的人类,所以要找一个奶牛喜爱程度差值最小的方案(虽然这样大家的喜爱程度可能普遍偏低,因为绝对公平并不代表合理啊),问喜爱程度的区间最小为多大? 解题思路: 每个棚子并不是住一个奶牛,所以是多重匹配咯.匹配的时候二分枚举喜爱程度的…

There is a class consisting of n students, in which each one has a number representing his/her personality. The teacher gives the students a new assignment and asks them to solve it in groups so that each group can contain two students at most. Stude…

PS:好题.不看题解绝对AC不了. 题解来源: http://blog.csdn.net/niushuai666/article/details/7176290 http://www.cnblogs.com/wally/archive/2013/04/02/2995846.html 题目大意: 现在有N个部队和M个任务(M>=N),每个部队完成每个任务有一点的效率,效率越高越好.但是部队已经安排了一定的计划,这时需要我们尽量用最小的变动,使得所有部队效率之和最大.求最小变动的数目和变动后和变动前…

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http://www.oschina.net/question/195686_46313 <title>标题</title> <title>标题</title> 我自己写的正则表达式是  "<title>.*?</title>" (没有双引号)  只能匹配第一种,,但是不能匹配第二种,,有没有好的正则表达式匹配类似第二种这样换行的标签 试试这个 <title>[\s\S]*?</title>…

1.(<img\ssrc[^>]*>) 2.content.replace(/<img [^>]*src=['"]([^'"]+)[^>]*>/gi, function (match) {    console.log(match);}); 结果是:<img src="http://www.jb51.net/images/logo.gif" alt="" width="142"…