Highways Time Limit:1000MS     Memory Limit:10000KB     64bit IO Format:%I64d & %I64u Submit Status Practice POJ 1751 Appoint description:  System Crawler  (2015-06-02) Description The island nation of Flatopia is perfectly flat. Unfortunately, Flato…
题目链接:点击打开链接 Description The island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has a very poor system of public highways. The Flatopian government is aware of this problem and has already constructed a number of highways connecting…
Highways Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 23070   Accepted: 6760   Special Judge Description The island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has a very poor system of public highways. The Flatopian…
Highways 题目链接: http://acm.hust.edu.cn/vjudge/contest/124434#problem/G Description The island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has a very poor system of public highways. The Flatopian government is aware of this problem an…
题目链接:http://poj.org/problem?id=1751 题意是给你n个点的坐标,然后给你m对点是已经相连的,问你还需要连接哪几对点,使这个图为最小生成树. 这里用kruskal不会超时,用prim应该会超时,特别注意在输入的时候不要多组输入,否则会TLE. #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #include <vec…
Description The island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has no public highways. So the traffic is difficult in Flatopia. The Flatopian government is aware of this problem. They're planning to build some highways so that i…
思路: 一开始用Kruskal超时了,因为这是一个稠密图,边的数量最惨可能N^2,改用Prim. Prim是这样的,先选一个点(这里选1)作为集合A的起始元素,然后其他点为集合B的元素,我们要做的就是每次找到B中的一个点,满足这个点到A的权值是B到A的权值中最小的,然后我们把这个点加入到A,再更新B中的点到A的最小距离. 代码: #include<cstdio> #include<cmath> #include<cstring> #include<iostream…
点击打开链接 Agri-Net Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 33733   Accepted: 13539 Description Farmer John has been elected mayor of his town! One of his campaign promises was to bring internet connectivity to all farms in the area.…
Description The island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has a very poor system of public highways. The Flatopian government is aware of this problem and has already constructed a number of highways connecting some of the…
                                                                                                                Highways Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 23426   Accepted: 10829 Description The island nation of Flatopia is…