Networking 题目链接: http://acm.hust.edu.cn/vjudge/contest/124434#problem/B Description You are assigned to design network connections between certain points in a wide area. You are given a set of points in the area, and a set of possible routes for the…

题意  给你n个点 m条边  求最小生成树的权 这是最裸的最小生成树了 #include<cstdio> #include<cstring> #include<algorithm> using namespace std; const int N = 55, M = 3000; int par[N], n, m, ans; struct edge{int u, v, w;} e[M]; bool cmp(edge a, edge b){return a.w < b…

Description You are assigned to design network connections between certain points in a wide area. You are given a set of points in the area, and a set of possible routes for the cables that may connect pairs of points. For each possible route between…

题目链接:http://poj.org/problem?id=1287 题目描述: 请先参考关于prim算法求最小生成树的讲解博客:https://www.cnblogs.com/LJHAHA/p/10051069.html 代码实现: #include<iostream> #include<cstdio> using namespace std; #define MAX 100 #define MAXCOST 0x7fffffff int graph[MAX][MAX]; int…

(￣▽￣)" #include<iostream> #include<cstdio> #include<cmath> #include<algorithm> #include<cstring> #include<string> #include<cstdlib> #include<vector> using namespace std; typedef long long ll; const int…

You are assigned to design network connections between certain points in a wide area. You are given a set of points in the area, and a set of possible routes for the cables that may connect pairs of points. For each possible route between two points,…

POJ.1287 Networking (Prim) 题意分析 可能有重边,注意选择最小的边. 编号依旧从1开始. 直接跑prim即可. 代码总览 #include <cstdio> #include <cstring> #define nmax 105 #define inf 1e8+7 using namespace std; int mp[nmax][nmax]; bool isfind = true; int n,m; int totaldis =0; void prim(…

POJ 2431 Expedition(探险) Time Limit: 1000MS   Memory Limit: 65536K [Description] [题目描述] A group of cows grabbed a truck and ventured on an expedition deep into the jungle. Being rather poor drivers, the cows unfortunately managed to run over a rock an…

题目链接:problemCode=1372">ZOJ1372 POJ 1287 Networking 网络设计 Networking Time Limit: 2 Seconds      Memory Limit: 65536 KB You are assigned to design network connections between certain points in a wide area. You are given a set of points in the area, a…

c/c++ 用普利姆(prim)算法构造最小生成树 最小生成树(Minimum Cost Spanning Tree)的概念: ​ 假设要在n个城市之间建立公路,则连通n个城市只需要n-1条线路.这时,自然会考虑,如何在最节省经费的前提下建立这个公路网络. ​ 每2个城市之间都可以设置一条公路,相应地都要付出一定的经济代价.n个城市之间,最多可以设置n(n-1)/2条线路,那么,如何在这些可能的线路中选择n-1条,以使总的耗费最少? 普利姆(prim)算法的大致思路: ​ 大致思想是:设图G顶点…