The Department of National Defence(DND)wishestoconnectseveral northern outposts by a wireless network. Two different communication technologies are to be used in establishing the network: every outpost will have a radio transceiver and some outposts…

题意: 有许多基地,每个基地都有两种收发信号的方式,一种是通过无线电收发机,另一种是通过卫星.两个基地之间可以通过卫星交流不管它们相距多远:但是通过无线电交流,就要求它们的距离不超过D.为了方便布置,节省成本,每个基地的无线电交流的最大距离都相等.给出基地的位置和卫星的数量,求出D,保证两个基地之间至少一个交流路径. 思路: 求出MST,保证了两点之间有路径,然后按照从大到小的顺序给在生成树中的边排序,将卫星安排给权值大的边,保证D尽可能小.s个卫星可以安排给s-1条边(s个点),所以第s条边的…

题意: 在南极有  N  个科研站,要把这些站用卫星和无线电连接起来,是的任意两个之间都能互相通信,如果其中任意的一个地方安装了卫星,那么就可以和其他安装卫星的互相通信,和距离没有关系,但是安装无线电 是需要费用D的,这个费用 D 为在安装无线电的地方中使用的无线电通信花费最大的那个值.现在有S个卫星可以提供给你安装,还有足够多的无线电设备,让你设计一个方案,使得D的费用最少. 思路: 首先肯定会用到最小生成树.为了使得我们的D值最小那么我们应该给距离最长的 S - 1个路径的俩段安装无线电(因…

Arctic Network Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 17758   Accepted: 5646 Description The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication tec…

Arctic Network Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 9557   Accepted: 3187 Description The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication tech…

Arctic Network Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice POJ 2349 Appoint description:  System Crawler  (2015-06-01) Description The Department of National Defence (DND) wishes to connect seve…

Arctic Network 题目链接: http://acm.hust.edu.cn/vjudge/contest/124434#problem/F Description The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication technologies are to be use…

http://poj.org/problem?id=2349 Arctic Network Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 12544   Accepted: 4097 Description The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network.…

Arctic Network Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 19113   Accepted: 6023 Description The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication tec…

Arctic Network Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 28311   Accepted: 8570 题目链接:http://poj.org/problem?id=2349 Description: The Department of National Defence (DND) wishes to connect several northern outposts by a wireless net…

Arctic Network Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 16968   Accepted: 5412 Description The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication tec…

Arctic Network The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication technologies are to be used in establishing the network: every outpost will have a radio transceive…

G - Arctic Network   #include<cmath> #include<cstdio> #include<cstring> #include<iostream> #include<algorithm> #define MAXN 510 using namespace std; double an; int fa[MAXN]; int t,n,m,tot,sum; double x[MAXN],y[MAXN],ans[MAXN]…

[Poj2349]Arctic Network Description 国防部(DND)要用无线网络连接北部几个哨所.两种不同的通信技术被用于建立网络:每一个哨所有一个无线电收发器,一些哨所将有一个卫星频道. 任何两个有卫星信道的哨所可以通过卫星进行通信,而不管他们的位置.同时,当两个哨所之间的距离不超过D时可以通过无线电通讯,D取决于对收发器的功率.功率越大,D也越大,但成本更高.出于采购和维修的方便,所有哨所的收发器必须是相同的:那就是说,D值对每一个哨所相同. 你的任务是确定收发器的D的最…

[题意] 南极有n个科研站, 要把这些站用卫星或者无线电连接起来,使得任意两个都能直接或者间接相连.任意两个都有安装卫星设备的,都可以直接通过卫星通信,不管它们距离有多远. 而安装有无线电设备的两个站,距离不能超过D. D越长费用越多. 现在有s个卫星设备可以安装,还有足够多的无线电设备,求一个方案,使得费用D最少(D取决与所有用无线电通信的花费最大的那条路径). InputThe first line of input contains N, the number of test cases.…

ZOJhttp://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=1914 POJhttp://poj.org/problem?id=2349 UVAhttp://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=1310 题目大意,给定一些点的坐标,求MST,然后要求求去掉最大的k条边后,最大的…

 Network  A Telephone Line Company (TLC) is establishing a new telephone cable network. They are connecting several places numbered by integers from 1 to N. No two places have the same number. The lines are bidirectional and always connect together t…

描述 The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication technologies are to be used in establishing the network: every outpost will have a radio transceiver and some o…

题目链接:http://poj.org/problem?id=2349 Description The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication technologies are to be used in establishing the network: every out…

链接: http://poj.org/problem?id=2349 Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 13715   Accepted: 4424 Description The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two differe…

Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 25165   Accepted: 7751 Description The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication technologies are t…

Description The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication technologies are to be used in establishing the network: every outpost will have a radio transceiver a…

UVa的题目好多,本题是数据结构的运用,就是Union Find并查集的运用.主要使用路径压缩.甚至不须要合并树了,由于没有反复的连线和改动单亲节点的操作. 郁闷的就是不太熟悉这个Oj系统,竟然使用库中的abs就会WA,自己写了个abs小函数就过了. 题目:http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=4075 #include <s…

2017-08-04 16:19:13 writer:pprp 题意如下: Description The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication technologies are to be used in establishing the network: every o…

The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication technologies are to be used in establishing the network: every outpost will have a radio transceiver and some outp…

题目链接: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=4075 题意: 有n个结点,開始都是单独的结点,如今有I操作和E操作,I u v表示吧u的父亲结点设为,距离为|u - v| % 1000,E操作询问u到根的距离 代码: #include <stdio.h> #include <iostream> #in…

http://poj.org/problem?id=2349 Description The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication technologies are to be used in establishing the network: every outpost…

/* The first line of each test case contains 1 <= S <= 100, the number of satellite channels! 注意:S表示一共有多少个卫星,那么就是有 最多有S-1个通道! 然后将最小生成树中的后边的 S-1通道去掉就行了! 思路:最小生成树中的第 k 个最小边! */ //克鲁斯克尔算法..... #include<iostream> #include<cstdio> #include<…

题目 /*********题意解说——来自discuss——by sixshine**************/ 有卫星电台的城市之间可以任意联络.没有卫星电台的城市只能和距离小于等于D的城市联络.题目告诉你卫星电台的个数S,让你求最小的D. 做最小生成树,去掉最长的S条边后,剩下最长的边就是D. 也就是求最小生成树中第S+1长的边. 完毕. /********************************************************/ //听说听木看懂之后,数据很水,果然…

数组开小了  还RE了一遍.......  最小生成树    按费用从小到大排... #include <iostream> #include <algorithm> #include <cstring> #include <cstdlib> #include <cstdio> #include <cmath> using namespace std; int n, m, s, p[300000]; struct node { int…