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3277:Marriage Match III

题目描述
Presumably, you all have known the question of stable marriage match. A girl will choose a boy; it is similar as the ever game of play-house . What a happy time as so many friends play together. And it is normal that a fight or a quarrel breaks out, but we will still play together after that, because we are kids.

Now, there are 2n kids, n boys numbered from 1 to n, and n girls numbered from 1 to n. As you know, ladies first. So, every girl can choose a boy first, with whom she has not quarreled, to make up a family. Besides, the girl X can also choose boy Z to be her boyfriend when her friend, girl Y has not quarreled with him. Furthermore, the friendship is mutual, which means a and c are friends provided that a and b are friends and b and c are friend.

Once every girl finds their boyfriends they will start a new round of this game—marriage match. At the end of each round, every girl will start to find a new boyfriend, who she has not chosen before. So the game goes on and on. On the other hand, in order to play more times of marriage match, every girl can accept any K boys. If a girl chooses a boy, the boy must accept her unconditionally whether they had quarreled before or not.

Now, here is the question for you, how many rounds can these 2n kids totally play this game?
输入解释
There are several test cases. First is an integer T, means the number of test cases.
Each test case starts with three integer n, m, K and f in a line (3<=n<=250, 0<m<n*n, 0<=f<n). n means there are 2*n children, n girls(number from 1 to n) and n boys(number from 1 to n).
Then m lines follow. Each line contains two numbers a and b, means girl a and boy b had never quarreled with each other.
Then f lines follow. Each line contains two numbers c and d, means girl c and girl d are good friends.
输出解释
For each case, output a number in one line. The maximal number of Marriage Match the children can play.
输入样例
1
4 5 1 2
1 1
2 3
3 2
4 2
4 4
1 4
2 3
输出样例
3
来自杭电HDUOJ的附加信息
Author starvae
Recommend chenheng

该题目是Virtual Judge题目,来自 杭电HDUOJ

源链接: HDU-3277

最后修改于 2020-10-25T23:01:53+00:00 由爬虫自动更新

共提交 0

通过率 --%
时间上限 内存上限
10000/4000MS(Java/Others) 32768/32768K(Java/Others)