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谜题13:畜牧场
George Orwell的《畜牧场(Animal Farm)》一书的读者可能还记得老上校的宣言:“所有的动物都是平等的。”下面的Java程序试图要测试这项宣言。那么,它将打印出什么呢? 对该程序的表面分析可能会认为它应该打印出Animal are equal: true。毕竟,pig和dog都是f ...
分类:其他好文   时间:2018-10-24 01:18:57    阅读次数:117
TOJ 1693:Silver Cow Party(最短路+思维)
描述 One cow from each of N farms (1 ≤ N ≤ 1000) conveniently numbered 1..N is going to attend the big cow party to be held at farm #X (1 ≤ X ≤ N). A to ...
分类:其他好文   时间:2018-10-06 00:34:45    阅读次数:161
luogu P3144 [USACO16OPEN]关闭农场Closing the Farm_Silver解题报告
题目描述 Farmer John and his cows are planning to leave town for a long vacation, and so FJ wants to temporarily close down his farm to save money in the ...
分类:其他好文   时间:2018-09-30 18:21:01    阅读次数:188
「USACO13MAR」「LuoguP3080」 牛跑The Cow Run (区间dp
题目描述 Farmer John has forgotten to repair a hole in the fence on his farm, and his N cows (1 <= N <= 1,000) have escaped and gone on a rampage! Each mi ...
分类:其他好文   时间:2018-09-22 21:22:29    阅读次数:188
P3119 [USACO15JAN]草鉴定Grass Cownoisseur
题目描述 In an effort to better manage the grazing patterns of his cows, Farmer John has installed one-way cow paths all over his farm. The farm consists ...
分类:其他好文   时间:2018-09-06 10:59:29    阅读次数:155
Luogu 2921 [USACO08DEC]在农场万圣节Trick or Treat on the Farm
基环树森林,然而我比较菜,直接tarjan找环。 发现缩点之后变成了DAG,每一个点往下走一定会走到一个环,缩点之后搜一遍看看会走到哪个环以及那个环的编号是多少,答案就是环的$siz$$ + $要走的路程。 比较垃圾的我忘记了判重边WA了好多发…… 时间复杂度$O(n)$。 Code: #inclu ...
分类:其他好文   时间:2018-09-06 02:31:26    阅读次数:168
[USACO08DEC]Trick or Treat on the Farm
嘟嘟嘟 这道题有一个特别重要的一点,就是节点数为 n 的图只有 n 条边,于是就有一下几个性质: 1.每一个点的出度都为1。 2.一个k个节点的强连通分量都是有k条边的环,而且这个环不会通往其他的点,只可能有别的点通往这个环。 所以说,对于一个在环中的点,答案就是这个环的节点数(包括自环),对于一个 ...
分类:其他好文   时间:2018-08-25 18:41:55    阅读次数:243
AtCoder Beginner Contest 106 ABCD
A - Garden Problem Statement There is a farm whose length and width are A yard and B yard, respectively. A farmer, John, made a vertical road and a ho ...
分类:其他好文   时间:2018-08-19 17:09:13    阅读次数:301
POJ 3268 Silver Cow Party
Description One cow from each of N farms (1 ≤ N ≤ 1000) conveniently numbered 1..N is going to attend the big cow party to be held at farm #X (1 ≤ X ≤ ...
分类:其他好文   时间:2018-08-18 17:42:41    阅读次数:163
[poj3666]Making the Grade
Making the Grade (简洁题意请往下翻) Description A straight dirt road connects two fields on FJ's farm, but it changes elevation more than FJ would like. His c ...
分类:其他好文   时间:2018-08-18 14:26:20    阅读次数:263
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