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1030 Travel Plan (30)(30 分)
A traveler's map gives the distances between cities along the highways, together with the cost of each highway. Now you are supposed to write a progra ...
分类:其他好文   时间:2018-06-04 00:13:11    阅读次数:207
spoj104 HIGH - Highways 矩阵树定理
欲学矩阵树定理~~必先自宫~~学习 "一些行列式的姿势" 然后 "做一道例题" ...
分类:其他好文   时间:2018-04-19 15:41:24    阅读次数:113
POJ-2485 Highways---最小生成树中最大边
题目链接: https://vjudge.net/problem/POJ-2485 题目大意: 求最小生成树中的最大边 思路: 是稠密图,用prim更好,但是规模不大,kruskal也可以过 ...
分类:其他好文   时间:2018-04-05 17:36:48    阅读次数:178
1030. Travel Plan (30)
A traveler's map gives the distances between cities along the highways, together with the cost of each highway. Now you are supposed to write a progra ...
分类:其他好文   时间:2018-03-10 11:47:30    阅读次数:193
poj 2485 Prim裸
Highways Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 34492 Accepted: 15570 Description The island nation of Flatopia is perfectly flat. ...
分类:其他好文   时间:2018-03-09 20:27:41    阅读次数:181
spoj 104 Highways(Matrix-tree定理)
spoj 104 Highways 生成树计数,matrix-tree定理的应用。 Matrix-tree定理: D为无向图G的度数矩阵(D[i][i]是i的度数,其他的为0),A为G的邻接矩阵(若u,v之间存在边,A[u][v]=A[v][u]=1),C=D-A。 对于一个无向图G,它的生成树个数 ...
分类:其他好文   时间:2018-03-03 21:21:01    阅读次数:156
POJ #2485 Highways MST中的最大边权
Description 问题描述:链接 思路 题目很直接,容易看出建的图是一张完全图,需要求出图中最小生成树的最大边权。由于数据上界已经定死了,那么选择用静态邻接表存建图。由于图是稠密图,那么求MST的话就选择 prim 。 做完 POJ #2253 Frogger 变种Dijkstra 后再做这个 ...
分类:其他好文   时间:2018-02-24 20:53:11    阅读次数:198
SP104 HIGH - Highways
题目描述 In some countries building highways takes a lot of time... Maybe that's because there are many possiblities to construct a network of highways an ...
分类:其他好文   时间:2018-02-21 18:18:49    阅读次数:170
最小生成树-并查集-Kruskal-zoj-2048-special judge
Highways description The island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has a very poor system of public highways. The Flatopian ...
分类:其他好文   时间:2018-02-02 11:44:14    阅读次数:127
PAT 1033. To Fill or Not to Fill
1033. To Fill or Not to Fill (25) With highways available, driving a car from Hangzhou to any other city is easy. But since the tank capacity of a car ...
分类:其他好文   时间:2018-01-16 18:45:33    阅读次数:228
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