Problem Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a computer program to complete the task. The space station is made up with a num…

Building a Space Station Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 5874   Accepted: 2914 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You ar…

Building a Space Station Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 6083   Accepted: 3024 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You ar…

Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 15664   Accepted: 6865 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a co…

You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a computer program to complete the task. The space station is made up with a number of units, called…

Building a Space Station Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 5173   Accepted: 2614 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You ar…

Building a Space Station Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 6635   Accepted: 3236 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You ar…

http://poj.org/problem?id=2031 题意:你是空间站的一员,太空里有很多球形且体积不一的“小房间”,房间可能相距不近,也可能是接触或者甚至是重叠关系,所有的房间都必须相连,这样的话宇航员才能从这个房间走到另一个房间,而宇航员从一个房间走到另一个房间,只要满足三个条件中的一个即可:1两个房间是接触的,2两个房间是重叠的,3两个房间之间有走廊相连.也因此若是没有接触的两个小房间就要有走廊连接,忽略走廊的宽度,花费与长度成正比,所以当然是花费越少越好,而球与球之间的距离只接触…

题目大意:在三维坐标中给出n个细胞的x,y,z坐标和半径r.如果两个点相交或相切则不用修路,否则修一条路连接两个细胞的表面,求最小生成树. 题目思路:最小生成树树模板过了,没啥说的 #include<cstdio> #include<cstdlib> #include<cmath> #include<iostream> #include<algorithm> #include<cstring> #include<vector&g…

http://poj.org/problem?id=2031 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a computer program to complete the task.  The space stati…

题目: Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a computer program to complete the task. The space station is made up with a number…

You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a computer program to complete the task. The space station is made up with a number of units, called…

http://poj.org/problem?id=2031 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a computer program to complete the task. The space statio…

Building a Space Station 题目链接: http://acm.hust.edu.cn/vjudge/contest/124434#problem/C Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a…

链接: http://poj.org/problem?id=2031 Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 6011   Accepted: 2989 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the stati…

You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a computer program to complete the task. The space station is made up with a number of units, called…

链接: http://poj.org/problem?id=2031 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=22013#problem/A Building a Space Station Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 3578   Accepted: 1830 Description You are a member of the s…

Building a Space Station Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 6064   Accepted: 3015 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You ar…

Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a computer program to complete the task.The space station is made up with a number of un…

Building a Space Station Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 5699   Accepted: 2855 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You ar…

3维空间中的最小生成树....好久没碰关于图的东西了.....              Building a Space Station Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 3804   Accepted: 1940 Description You are a member of the space station engineering team, and are assigned a task in th…

Building a Space Station POJ - 2031 You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a computer program to complete the task. The space station is ma…

Building a Space Station Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 8572   Accepted: 4093 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You ar…

Building a Space Station Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 5869 Accepted: 2910 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are ex…

Description Roger Wilco is in charge of the design of a low orbiting space station for the planet Mars. To simplify construction, the station is made up of a series of Airtight Cubical Modules (ACM's), which are connected together once in space. One…

最小生成树的性质 MST性质:设G = (V,E)是连通带权图,U是V的真子集.如果(u,v)∈E,且u∈U,v∈V-U,且在所有这样的边中, (u,v)的权c[u][v]最小,那么一定存在G的一棵最小生成树,(u,v)为其中一条边. 构造最小生成树,要解决以下两个问题: (1).尽可能选取权值小的边,但不能构成回路(也就是环). (2).选取n-1条恰当的边以连接网的n个顶点. Prim算法的思想: 设G = (V,E)是连通带权图,V = {1,2,…,n}.先任选一点(一般选第一个点),首…

MST在前面学习了Kruskal算法,还有一种算法叫做Prim的.这两者的区别是Prim算法适合稠密图,比如说鸟巢这种几乎所有点都有相连的图.其时间复杂度为O(n^2),其时间复杂度与边的数目无关:而kruskal算法的时间复杂度为O(eloge),跟边的数目有关,适合稀疏图. prim算法 基本思想:假设G＝(V,E)是连通的,TE是G上最小生成树中边的集合.算法从U＝{u0}(u0∈V),TE＝{ 空集 }开始.重复执行下列操作: 1.在所有u∈U,v∈V-U的边(u,v)∈E中找一条权值最…

Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 3820   Accepted: 1950 Description You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a com…

1.Prim 算法 以某顶点为起点,逐步找各顶点上最小权值的边来构建最小生成树. 2.Kruskal 算法 直接寻找最小权值的边来构建最小生成树. 比较: Kruskal 算法主要是针对边来展开,边数少时效率会非常高,所以对于稀疏图有很大的优势. Prim 算法针对顶点展开,对于稠密图,即边数非常多的情况下会更好. 具体代码如下: /* Graph.h头文件 */ /*包含图的建立:图的深度优先遍历.图的广度优先遍历*/ /*包含图的最小生成树:Prim 算法.Kruskal 算法*/ #inc…

在边赋权图中,权值总和最小的生成树称为最小生成树.构造最小生成树有两种算法,分别是prim算法和kruskal算法.在边赋权图中,如下图所示: 在上述赋权图中,可以看到图的顶点编号和顶点之间邻接边的权值,若要以上图来构建最小生成树.结果应该如下所示: 这样构建的最小生成树的权值总和最小,为17 在构建最小生成树中,一般有两种算法,prim算法和kruskal算法 在prim算法中,通过加入最小邻接边的方法来建立最小生成树算法.首先构造一个零图,在选一个初始顶点加入到新集合中,然后分别在原先的顶点…