POJ 最小生成树模板 Kruskal算法 #include<iostream> #include<algorithm> #include<stdio.h> #include<string.h> #include<ctype.h> #include<stdlib.h> #include<limits.h> #include<math.h> #include<queue> #include<st…

23333333333 完全是道水题.因为是偶自己读懂自己做出来的..T_T.prim的模板题水过. DESCRIPTION:John竞选的时候许诺会给村子连网.现在给你任意两个村子之间的距离.让你求任意两个村庄是连通的所需要的网线.就是求最小生成树的权值. 附代码: #include<stdio.h>#include<iostream>#include<string.h>#include<string>#include<algorithm>#d…

poj 1251  && hdu 1301 Sample Input 9 //n 结点数A 2 B 12 I 25B 3 C 10 H 40 I 8C 2 D 18 G 55D 1 E 44E 2 F 60 G 38F 0G 1 H 35H 1 I 353A 2 B 10 C 40B 1 C 200Sample Output 21630 prim算法 # include <iostream> # include <cstdio> # include <cstr…

#include <iostream>// poj 1258 10.1.5.253 1505 using namespace std; #define N 105 // 顶点的最大个数 (多写 int a[N][N],low[N],n,ans; int min(int x,int y) { return x<y?x:y; } void prim(int u0) { int i,j,m,k; ans=0; // for (i=1;i<n;i++) low[i]=a[u0][i]; /…

POJ 1258 Agri-Net http://poj.org/problem?id=1258 水题. 题目就是让你求MST,连矩阵都给你了. prim版 #include<cstdio> const int MAXN=101; const int INF=100000+10; int map[MAXN][MAXN]; int dis[MAXN]; int n; void prim() { bool vis[MAXN]={0}; for(int i=0;i<=n;i++) dis[i]…

http://poj.org/problem?id=1258 FJ为了竞选市长,承诺为这个地区的所有农场联网,为了减少花费,希望所需光纤越少越好,给定每两个农场的花费,求出最小花费. 最小生成树. #include <cstdio> #include <algorithm> using namespace std; ; <<; int cost[maxn][maxn]; int mincost[maxn]; bool used[maxn]; int n; int pri…

链接: http://poj.org/problem?id=1258 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=82831#problem/I Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 45751   Accepted: 18835 Description Farmer John has been elected mayor of his town!…

点击打开链接 Agri-Net Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 33733   Accepted: 13539 Description Farmer John has been elected mayor of his town! One of his campaign promises was to bring internet connectivity to all farms in the area.…

用的是prim算法. 我用vector数组,每次求最小的dis时,不需要遍历所有的点,只需要遍历之前加入到vector数组中的点(即dis[v]!=INF的点).但其实时间也差不多,和遍历所有的点的方法都是16ms... #include <iostream> #include <algorithm> #include <string.h> #include <stdio.h> #include <string> #include <que…

Agri-Net 题目链接: http://acm.hust.edu.cn/vjudge/contest/124434#problem/H Description Farmer John has been elected mayor of his town! One of his campaign promises was to bring internet connectivity to all farms in the area. He needs your help, of course.…