题目链接:https://vjudge.net/problem/HDU-2444 The Accomodation of Students Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 7328    Accepted Submission(s): 3270 Problem Description There are a group o…

The Accomodation of Students Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 6424    Accepted Submission(s): 2880 Problem Description There are a group of students. Some of them may know each o…

题意: 有n个学生,有m对人是认识的,每一对认识的人能分到一间房,问能否把n个学生分成两部分,每部分内的学生互不认识,而两部分之间的学生认识.如果可以分成两部分,就算出房间最多需要多少间,否则就输出No. 思路: 判断是否是二分图,并输出最大匹配数.用'临点填色法'判断,相邻点异色,发现同色则不成立,然后匈牙利算法, 求出个数除2.注:匈牙利算法时间复杂度 '邻接表': O(mn),邻接矩阵: O(n^3). 代码: #include <iostream> #include <stdio…

//推断是否为二分图:在无向图G中,假设存在奇数回路,则不是二分图.否则是二分图. //推断回路奇偶性:把相邻两点染成黑白两色.假设相邻两点出现颜色同样则存在奇数回路. 也就是非二分图. # include <stdio.h> # include <string.h> # include <algorithm> using namespace std; int vis[210],map[210][210],cott[210]; int c[210]; int flag,…

有n个关系,他们之间某些人相互认识.这样的人有m对.你需要把人分成2组,使得每组人内部之间是相互不认识的.如果可以,就可以安排他们住宿了.安排住宿时,住在一个房间的两个人应该相互认识.最多的能有多少个房间住宿的两个相互认识. 先是要判断是否为二部图,然后求最大匹配. 学习一下模板~ #include<cstdio> #include<cstring> #include<vector> #include<algorithm> using namespace s…

The Accomodation of Students Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 9477    Accepted Submission(s): 4165 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2444 Description: There are a gro…

The Accomodation of Students Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3775    Accepted Submission(s): 1771 Problem Description There are a group of students. Some of them may know each ot…

染色判读二分图+Hungary匹配 The Accomodation of Students Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1705    Accepted Submission(s): 821 Problem Description There are a group of students. Some of them…

The Accomodation of Students Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4091    Accepted Submission(s): 1876 Problem Description There are a group of students. Some of them may know each ot…

The Accomodation of Students Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1462    Accepted Submission(s): 716 Problem DescriptionThere are a group of students. Some of them may know each othe…