Connect them Time Limit: 1 Second      Memory Limit:32768 KB You have n computers numbered from 1 ton and you want to connect them to make a small local area network (LAN). All connections are two-way (that is connecting computersi andj is the same a…

题目链接:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=3367 题目就是简单的最小生成树的模板的应用,不过最小生成树可能不唯一,答案要求输出字典序最小 代码: #include<cstdlib> #include<cstdio> #include<cstring> #include<iostream> #include<algorithm> using namespace…

kruskal思想,排序后暴力枚举从任意边开始能够组成的最小生成树 #include <cstdio> #include <algorithm> using namespace std; const int maxn = 101; const int maxe = maxn * maxn / 2; struct edge{ int f,t,c; bool operator <(edge e2)const { return c<e2.c; } }e[maxe]; int…

Connect them ZOJ - 3204 You have n computers numbered from 1 to n and you want to connect them to make a small local area network (LAN). All connections are two-way (that is connecting computers i and j is the same as connecting computers j and i). T…

Description Given an undirected weighted graph G, you should find one of spanning trees specified as follows. The graph G is an ordered pair (V, E), where V is a set of vertices {v1, v2, -, vn} and E is a set of undirected edges {e1, e2, -, em}. Each…

1016: [JSOI2008]最小生成树计数 Time Limit: 1 Sec  Memory Limit: 162 MBSubmit: 3517  Solved: 1396[Submit][Status][Discuss] Description 现在给出了一个简单无向加权图.你不满足于求出这个图的最小生成树,而希望知道这个图中有多少个不同的最小生成树.(如果两颗最小生成树中至少有一条边不同,则这两个最小生成树就是不同的).由于不同的最小生成树可能很多,所以你只需要输出方案数对31011的…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=3371 984ms风险飘过~~~ /************************************************************************/ /* hdu Connect the Cities 最小生成树 题目大意:最小生成树,题目很长,题意很简单就是最小生成树.关键是构建图 */ /****************************************…

Description For a tree, which nodes and edges are all weighted, the ratio of it is calculated according to the following equation. Given a complete graph of n nodes with all nodes and edges weighted, your task is to find a tree, which is a sub-graph…

[题目描述] 给定二维平面上n个整点,求该图的一个直线斯坦纳树,使得树的边长度总和尽量小. 直线斯坦纳树:使所有给定的点连通的树,所有边必须平行于坐标轴,允许在给定点外增加额外的中间节点. 如下图所示为两种直线斯坦纳树的生成方案,蓝色点为给定的点,红色点为中间节点.…

Connect the Cities Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 9985    Accepted Submission(s): 2843 Problem Description In 2100, since the sea level rise, most of the cities disappear. Thou…