传送门: http://acm.hdu.edu.cn/showproblem.php?pid=1829 A Bug's Life Time Limit: 15000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 19429    Accepted Submission(s): 6206 Problem Description Background Professor H…

http://acm.hdu.edu.cn/showproblem.php?pid=1829 http://poj.org/problem?id=2492 臭虫有两种性别,并且只有异性相吸,给定n条臭虫(编号1-n)和m对关系,判断是否是出现同性恋的情况. 这题跟食物链的题类似,这里只有两种关系,关系是同性或者异性. 对于每只动物创建两个元素  同性或异性,并用这 2×n个元素建立并查集. 首先判断输入的x和y是否是一个组的.是就flag=1. 然后,如果x和y是一对,那么合并x和y+n,x+n…

A Bug's Life Time Limit: 15000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 9204    Accepted Submission(s): 2961 Problem Description Background Professor Hopper is researching the sexual behavior of a rare sp…

先说说种类并查集吧. 种类并查集是并查集的一种.但是,种类并查集中的数据是分若干类的.具体属于哪一类,有多少类,都要视具体情况而定.当然属于哪一类,要再开一个数组来储存.所以,种类并查集一般有两个数组,一个存并查集内的父子关系,一个存各个节点所属的种类关系. 以这道题为例(题意在后面,如果没有读题,可以先看完题在来看这部分)—— 这道题很明显,将bug分成两类,一公一母.但是实际上我们并不关心它是公的还是母的,只关心它们之间是同性还是异性.所以,我们可以设与并查集的根节点同性的为0,反之为1.所…

                                                                                                A Bug's Life                  Background  Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two…

Problem Description Background Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two different genders and that they only interact with bugs of the opposite gender. In his experiment, individu…

Background Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two different genders and that they only interact with bugs of the opposite gender. In his experiment, individual bugs and their in…

思路:见代码吧. #include <stdio.h> #include <string.h> #include <set> #include <vector> #include <queue> using namespace std; ; int n,m; int father[maxn]; int num[maxn]; //num[i]表示 int rel[maxn]; //rel[i]表示它与根节点的关系,0代表同性,1代表异性 void…

A Bug's Life Time Limit: 15000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 8528    Accepted Submission(s): 2745 Problem Description Background  Professor Hopper is researching the sexual behavior of a rare…

A Bug's Life Time Limit: 15000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 11981    Accepted Submission(s): 3901 Problem Description Background Professor Hopper is researching the sexual behavior of a rare s…