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P3008 [USACO11JAN]道路和飞机Roads and Planes
P3008 [USACO11JAN]道路和飞机Roads and Planes Dijkstra+Tarjan 因为题目有特殊限制所以不用担心负权的问题 但是朴素的Dijkstra就算用堆优化,也显然会超时。 这是因为Dj每次扩展时,总是找到费用最小那个点进行扩展。 而本题的毒瘤数据可以在一个图(设 ...
分类:其他好文   时间:2018-09-21 15:11:53    阅读次数:164
题解-CodeForces835F Roads in the Kingdom
Problem "CodeForces 835F" 题意:求基环树删去环上任意一边后直径最小值,直径定义为所有点对最近距离的最大值 Solution 首先明确删去环上一点是不会影响树内直径的,所以应当先把所有树的直径求出来,这是树形Dp可以解决的,同时建议使用树形Dp,可以一次性求出接下来要用到的数 ...
分类:其他好文   时间:2018-09-18 14:26:18    阅读次数:140
题解报告:poj 2631 Roads in the North(最长链)
Description Building and maintaining roads among communities in the far North is an expensive business. With this in mind, the roads are build such th ...
分类:其他好文   时间:2018-09-09 11:35:44    阅读次数:266
HDU - 4284 Travel(floyd+状压dp)
Travel PP loves travel. Her dream is to travel around country A which consists of N cities and M roads connecting them. PP has measured the money each ...
分类:其他好文   时间:2018-09-08 22:36:31    阅读次数:163
Chisel3-Intellij IDEA安装Scala插件
后续开启RISC-V开发相关内容。 RISC-V开发推荐使用Chisel编程语言。Chisel即Constructing Hardware in a Scala Embedded Language: Chisel is an open-source hardware construction lan ...
分类:其他好文   时间:2018-09-04 23:29:13    阅读次数:537
ACM-ICPC 2018 南京赛区网络预赛 L. Magical Girl Haze
262144K There are NN cities in the country, and MM directional roads from uu to v(1\le u, v\le n)v(1≤u,v≤n). Every road has a distance c_ici?. Haze is ...
分类:其他好文   时间:2018-09-04 21:41:11    阅读次数:333
ACM-ICPC 2018 南京赛区网络预赛 L.Magical Girl Haze
L.Magical Girl Haze 题目链接: https://nanti.jisuanke.com/t/31001 Description There are N cities in the country, and M directional roads from u to v(1≤u,v≤ ...
分类:其他好文   时间:2018-09-02 14:32:47    阅读次数:177
ACM-ICPC 2018 南京赛区网络预赛 Magical Girl Haze 最短路
ACM ICPC 2018 南京赛区网络预赛 Magical Girl Haze 最短路 [TOC] 题面 There are N cities in the country, and M directional roads from uu to v(1$\le$ u, v$\le$ n)v(1≤u ...
分类:其他好文   时间:2018-09-01 22:04:53    阅读次数:152
POJ - 1251(最小生成树.krustal)
题目链接:http://poj.org/problem?id=1251 题目: Jungle Roads Description The Head Elder of the tropical island of Lagrishan has a problem. A burst of foreign ...
分类:其他好文   时间:2018-08-26 10:31:40    阅读次数:178
POJ - 2421(最小生成树.prim)
题目: 题目链接: http://poj.org/problem?id=2421 Constructing Roads Description There are N villages, which are numbered from 1 to N, and you should build som ...
分类:其他好文   时间:2018-08-26 10:31:10    阅读次数:148
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