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Highways - poj 2485 (Prim 算法)
Time Limit:1000MSMemory Limit:65536KTotal Submissions:24383Accepted:11243DescriptionThe island nation of Flatopia is perfectly flat. Unfortunately, Fl...
分类:编程语言   时间:2015-07-17 11:40:02    阅读次数:142
poj2485 Highways
DescriptionThe island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has no public highways. So the traffic is difficult in Flatopia. T...
分类:其他好文   时间:2015-07-08 14:13:28    阅读次数:113
【POJ 2485】 Highways
【POJ 2485】 Highways...
分类:其他好文   时间:2015-07-03 15:51:51    阅读次数:143
【SPOJ104】【矩阵树定理】Highways
什么?你说你看不懂英文题面? 好吧其实我也看不懂… 把论文里题面翻译放在英文题面下面 HIGH - Highways no tags In some countries building highways takes a lot of time… Maybe that’s because there are many possiblities to construct a network o...
分类:其他好文   时间:2015-06-09 21:59:43    阅读次数:272
PAT 1004 To Fill or Not to Fill (25)
题目描述 With highways available, driving a car from Hangzhou to any other city is easy. But since the tank capacity of a car is limited, we have to find gas stations on the way from time to time. Diff...
分类:其他好文   时间:2015-06-06 10:38:53    阅读次数:151
poj 1751 Highways (最小生成树)
题目链接: http://poj.org/problem?id=1751题目大意: 给出n个点,每个点用二维坐标表示,不会用任意两个点在同一位置,在这n个点之间已经有m条道路了,问在花费最少的情况下修建那几条路能把所有的点连在一起?解题思路: 对任意一个点向其他的点建边,因为建图的时候,边比较...
分类:其他好文   时间:2015-06-02 21:32:39    阅读次数:104
1013. Battle Over Cities (25)
题目如下: It is vitally important to have all the cities connected by highways in a war. If a city is occupied by the enemy, all the highways from/toward that city are closed. We must know immediat...
分类:其他好文   时间:2015-05-23 11:33:36    阅读次数:167
sicily 1090 Highways
求最小生成树的长度最小的边,我用的是prim算法: 1 #include 2 #include 3 #include 4 using namespace std; 5 6 const int INF=0x3f3f3f3f; 7 int map[505][505]; 8 int visit[5...
分类:其他好文   时间:2015-05-15 21:13:17    阅读次数:91
1393 - Highways(问题抽象)(容斥原理计数)
问题的方向是对称的,统计\*2即可,当gcd(a,b)>1及重复, 证:a*b满足gcd(a,b)>1,在他对角线和a'和b'对角线是同一条直线(a'=a/gcd(a,b)b'=b/gcd(a,b)) 其次,如果放置位置不够靠左,也不够靠上,则它和它“左上方”的包围盒也重复了 假定左上角坐标(0,0)则对于左上角在(x,y)的包围盒,其左上方的包围盒的左上角为(x-a,y-b),这个左上角合...
分类:其他好文   时间:2015-05-12 15:54:53    阅读次数:124
【poj2152】【Fire】【树形dp】
Fire Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 1161 Accepted: 595 DescriptionCountry Z has N cities, which are numbered from 1 to N. Cities are connected by highways, and t...
分类:其他好文   时间:2015-04-25 18:25:04    阅读次数:233
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