这道题的意思是就是 问题 1:初始至少需要向多少个学校发放软件,使得网络内所有的学校最终都能得到软件. 2:至少需要添加几条传输线路(边),使任意向一个学校发放软件后,经过若干次传送,网络内所有的学校最终都能得到软件. 其实问题1就是问,这个图的支配集有多少???解决这个问题非常简单,把图缩点后,找到有多少个入度为0的点,就是支配集.一个支配内,所有点可能不是强连通的,但是都可以通过这个点到达. 而问题二其实更加简单,我们只需要把入读为0的点和出度为0的点的数目取一个最大值即可,至于问什么,很简…

http://poj.org/problem?id=1236 Network of Schools Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 13046   Accepted: 5215 Description A number of schools are connected to a computer network. Agreements have been developed among those scho…

Network of Schools Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 27121   Accepted: 10704 Description A number of schools are connected to a computer network. Agreements have been developed among those schools: each school maintains a l…

kuangbin专题链接:https://vjudge.net/article/752 kuangbin专题十二 基础DP1 题解+总结:https://www.cnblogs.com/RioTian/p/13110438.html 最小生成算法 介绍 和 模板 次最小生成树:介绍及模板 总结: 文章目录 目录 总结: 1.Jungle Roads 2.Networking prim 算法 kruskal算法 3.Constructing Roads 4.Agri-Net 5.The Uniqu…

Network of Schools Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 16806   Accepted: 6643 Description A number of schools are connected to a computer network. Agreements have been developed among those schools: each school maintains a li…

Network of Schools Time Limit: 1000MS Memory Limit: 10000K Description A number of schools are connected to a computer network. Agreements have been developed among those schools: each school maintains a list of schools to which it distributes softwa…

Network of Schools Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 16803   Accepted: 6641 Description A number of schools are connected to a computer network. Agreements have been developed among those schools: each school maintains a li…

                                                 Network of Schools Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 5354   Accepted: 2106 Description A number of schools are connected to a computer network. Agreements have been developed…

Network of Schools Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 12240   Accepted: 4871 Description A number of schools are connected to a computer network. Agreements have been developed among those schools: each school maintains a li…

                                                            Network of Schools Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 16343   Accepted: 6484 Description A number of schools are connected to a computer network. Agreements have be…