Network of Schools Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 16571   Accepted: 6558 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: 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…

1121: [POI2008]激光发射器SZK Time Limit: 10 Sec  Memory Limit: 162 MBSubmit: 792  Solved: 653[Submit][Status][Discuss] Description 多边形相邻边垂直,边长为整数,边平行坐标轴.要在多边形的点上放一些激光发射器和接收器.满足下列要求: 1发射器和接收器不能放置在同一点: 2发射器发出激光可以沿壁反射,最终到达一个接收器: 3发射器只能沿角平分线发射激光.求:最多可放置多少对发射器…

1121: [POI2008]激光发射器SZK Time Limit: 10 Sec  Memory Limit: 162 MBSubmit: 682  Solved: 565[Submit][Status][Discuss] Description 多边形相邻边垂直,边长为整数,边平行坐标轴.要在多边形的点上放一些激光发射器和接收器.满足下列要求: 1发射器和接收器不能放置在同一点: 2发射器发出激光可以沿壁反射,最终到达一个接收器: 3发射器只能沿角平分线发射激光.求:最多可放置多少对发射器…

传送门 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 software (the “receiving schools”). Note that if B is in the…

题目链接Network of Schools 参考斌神博客 强连通分量缩点求入度为0的个数和出度为0的分量个数 题目大意:N(2<N<100)各学校之间有单向的网络,每个学校得到一套软件后,可以通过单向网络向周边的学校传输,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.   也就是: —        给定一个有向图,求:   1) 至少要选几个顶…

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…