ZOJ2326Tangled in Cables（最小生成树）

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ZOJ2326Tangled in Cables（最小生成树）

Tangled in Cables Time Limit: 2 Seconds Memory Limit: 65536 KB You are the owner of SmallCableCo and have purchased the franchise rights for a small town. Unfortunately, you lack enough funds to start your business properly and are relying on pa…

UVALive 4872 Underground Cables 最小生成树

题目链接: 题目 Underground Cables Time Limit: 3000MS Memory Limit: Unknown 64bit IO Format: %lld & %llu 问题描述 A city wants to get rid of their unsightly power poles by moving their power cables underground. They have a list of points that all need to be con…

POJ 2075 Tangled in Cables 最小生成树

简单的最小生成树,不过中间却弄了很久,究其原因,主要是第一次做生成树,很多细节不够熟练,find()函数的循环for判断条件是 pre[i]>=0,也就是遇到pre[i]==-1时停止,i就是并查集的代表元. #include<stdio.h> #include<math.h> #include<string.h> #include<stdlib.h> #define MAXN 1000 #define MAXE 1000010 #define LEN…

图论常用算法之一 POJ图论题集【转载】

POJ图论分类[转] 一个很不错的图论分类,非常感谢原版的作者!!!在这里分享给大家,爱好图论的ACMer不寂寞了... (很抱歉没有找到此题集整理的原创作者,感谢知情的朋友给个原创链接) POJ:http://poj.org/ 1062* 昂贵的聘礼枚举等级限制+dijkstra 1087* A Plug for UNIX 2分匹配 1094 Sorting It All Out floyd 或拓扑 1112* Team Them Up! 2分图染色+DP 1125 Stockbroker…

poj2075

Tangled in Cables Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 6348 Accepted: 2505 Description You are the owner of SmallCableCo and have purchased the franchise rights for a small town. Unfortunately, you lack enough funds to start…

UvaLive 4872 Underground Cables （最小生成树）

题意: 就是裸的最小生成树(MST), 完全图, 边长是实数. 分析: 算是复习一下MST把方法一: prim 复杂度(n^2) #include <bits/stdc++.h> using namespace std; ; const int inf = 0x3f3f3f3f; double G[maxn][maxn], dis[maxn]; bool vis[maxn]; int x[maxn], y[maxn]; int N; double p2pdis(int x1, int y1,…

URAL 1160 Network(最小生成树)

Network Time limit: 1.0 secondMemory limit: 64 MB Andrew is working as system administrator and is planning to establish a new network in his company. There will be N hubs in the company, they can be connected to each other using cables. Since each w…