
并查集
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pat天梯赛L2-010. 排座位
L2-010. 排座位时间限制150 ms内存限制65536 kB代码长度限制8000 B判题程序Standard作者陈越布置宴席最微妙的事情,就是给前来参宴的各位宾客安排座位。无论如何,总不能把两个死对头排到同一张宴会桌旁!这个艰巨任务现在就交给你,对任何一对客人,请编写程序告诉主人他们是否能被安排同席。输入格式:输入第一行给出3个正整数:N(<= 100),即前来参宴的宾客总人数,则这些...原创 2018-03-24 18:55:06 · 252 阅读 · 0 评论 -
hdu1829(带权并查集)
A Bug's LifeTime Limit: 15000/5000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 19940 Accepted Submission(s): 6374Problem DescriptionBackground Professo...原创 2018-11-08 18:38:26 · 259 阅读 · 0 评论 -
hdu3938(离线并查集)
PortalTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1930 Accepted Submission(s): 961Problem DescriptionZLGG found a magic theory that the b...原创 2018-05-31 18:49:37 · 407 阅读 · 0 评论 -
hdu1232(简单并查集)
畅通工程Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 65048 Accepted Submission(s): 34771Problem Description某省调查城镇交通状况,得到现有城镇道路统计表,表中列出了每条道路直接连...原创 2018-05-24 20:20:51 · 583 阅读 · 0 评论 -
hdu5441(离线带权并查集)
TravelTime Limit: 1500/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 4372 Accepted Submission(s): 1456Problem DescriptionJack likes to travel around the w...原创 2018-05-26 14:41:49 · 289 阅读 · 0 评论 -
hdu3038(并查集带权)
How Many Answers Are Wrong Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 12901 Accepted Submission(s): 4589 Problem Description...原创 2018-05-25 16:39:20 · 1187 阅读 · 0 评论 -
hdu1272(简单并查集)
小希的迷宫Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 60972 Accepted Submission(s): 19127Problem Description上次Gardon的迷宫城堡小希玩了很久(见Problem B),现在...原创 2018-05-25 10:17:36 · 515 阅读 · 0 评论 -
关于并查集的个人再次的理解
先上一个图再来一个代码进行解析:#include <iostream> #include <cstring> using namespace std; int f[50]; void init(int n) { for(int i=1;i<=n;i++) f[i]=i; } int getf(int a) { ...原创 2018-04-10 13:38:11 · 166 阅读 · 0 评论 -
并查集
并查集性质并查集算法(union_find sets)不支持分割一个集合,求连通子图、求最小生成树用法并查集是由一个数组pre[],和两个函数构成的,一个函数为find()函数,用于寻找前导点的,第二个函数是join()用于合并路线的int find(int x){ int r=x; while(pre[r]!=r) r=pre[r];//找到他的前导结点 int...原创 2018-03-24 19:59:24 · 150 阅读 · 0 评论 -
hdu1589(枚举+并查集)
find the most comfortable roadTime Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 9735 Accepted Submission(s): 4055Problem DescriptionXX星有...原创 2018-12-03 13:45:07 · 236 阅读 · 1 评论