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POJ 3169 Layout
Layout Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 13261 Accepted: 6361 Description Like everyone else, cows like to stand close to the ...
分类:其他好文   时间:2018-02-24 20:45:40    阅读次数:157
poj3274 Gold Balanced Lineup(HASH)
Description Farmer John's N cows (1 ≤ N ≤ 100,000) share many similarities. In fact, FJ has been able to narrow down the list of features shared by hi ...
分类:其他好文   时间:2018-02-24 13:12:56    阅读次数:164
Luogu P2826 [USACO08NOV]光开关Light Switching
题目描述 Farmer John tries to keep the cows sharp by letting them play with intellectual toys. One of the larger toys is the lights in the barn. Each of t ...
分类:其他好文   时间:2018-02-23 22:26:35    阅读次数:161
poj 2229 【完全背包dp】【递推dp】
poj 2229 Sumsets Time Limit: 2000MS Memory Limit: 200000K Total Submissions: 21281 Accepted: 8281 Description Farmer John commanded his cows to search ...
分类:其他好文   时间:2018-02-21 18:18:03    阅读次数:164
POJ 2186 - Popular Cows - 强连通分量,缩点
题目大意: 给定一个含N个点、M条边的有向图,求其中有多少个点,可以由其他任意一点出发到达它? N<=1e4,M<=5e4。 为了描述和编程简便,我们建立原图的反图,这样问题转化为:有多少个点满足从它出发可以到达其他任意一点。 若无特殊说明,以下所指的图均为反图。 引理1:满足条件的所有点必然在同一 ...
分类:其他好文   时间:2018-02-20 23:35:00    阅读次数:204
【贪心】POJ3190:Stall Reservations
Description Oh those picky N (1 <= N <= 50,000) cows! They are so picky that each one will only be milked over some precise time interval A..B (1 <= A ...
分类:其他好文   时间:2018-02-20 11:53:03    阅读次数:167
【贪心】POJ2393:Yogurt factory
Description The cows have purchased a yogurt factory that makes world-famous Yucky Yogurt. Over the next N (1 <= N <= 10,000) weeks, the price of milk ...
分类:其他好文   时间:2018-02-20 11:49:33    阅读次数:132
P2922 [USACO08DEC]秘密消息Secret Message
题目描述 Bessie is leading the cows in an attempt to escape! To do this, the cows are sending secret binary messages to each other. Ever the clever counte ...
分类:其他好文   时间:2018-02-20 11:16:53    阅读次数:172
poj 3186 Treats for the Cows (区间dp)
题意:给你一个序列,每次只能从头或为取数,然后乘以这是第几个数,最后加和,是加和最大 思路:假设长度最开始是1,然后依次枚举长度,以及起点,dp[i][j]是又里面的两端点扩出来的(ps:代码不是这么写的) 代码: ...
分类:其他好文   时间:2018-02-17 23:48:27    阅读次数:312
Poj 2186 Popular Cows(Tarjan 强连通缩点)
传送门:Poj 2186 题意:给你n头牛,m种关系,A牛认为B牛是popular的,B牛认为C牛是popular的,则A也认为C是popular的,问最终有几头被所有牛认为是popular的牛 题解:强连通缩点基础题(虽然我Tarjan和缩点都是对的,但是最终讨论判断的时候写垮了(写了3天。。。。 ...
分类:其他好文   时间:2018-02-17 22:51:32    阅读次数:185
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