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洛谷 P2665 [USACO08FEB]连线游戏Game of Lines
P2665 [USACO08FEB]连线游戏Game of Lines P2665 [USACO08FEB]连线游戏Game of Lines P2665 [USACO08FEB]连线游戏Game of Lines 题目背景 Farmer John最近发明了一个游戏,来考验自命不凡的贝茜。 题目描述 ...
分类:其他好文   时间:2017-12-30 17:00:48    阅读次数:196
洛谷 P2970 [USACO09DEC]自私的放牧Selfish Grazing
P2970 [USACO09DEC]自私的放牧Selfish Grazing P2970 [USACO09DEC]自私的放牧Selfish Grazing P2970 [USACO09DEC]自私的放牧Selfish Grazing 题目描述 Each of Farmer John's N (1 < ...
分类:其他好文   时间:2017-12-30 15:59:17    阅读次数:145
P2891 [USACO07OPEN]吃饭Dining(最大流+拆点)
题目描述 Cows are such finicky eaters. Each cow has a preference for certain foods and drinks, and she will consume no others. Farmer John has cooked fabu ...
分类:其他好文   时间:2017-12-29 22:38:46    阅读次数:246
BZOJ 2015 Usaco2010 Feb Chocolate Giving
2015: [Usaco2010 Feb]Chocolate Giving Description Farmer John有B头奶牛(1<=B<=25000),有N(2*B<=N<=50000)个农场,编号1-N,有M(N-1<=M<=100000)条双向边,第i条边连接农场R_i和S_i(1<=R ...
分类:其他好文   时间:2017-12-28 12:03:23    阅读次数:211
BZOJ 1690 Usaco2007 Dec 奶牛的旅行
1690: [Usaco2007 Dec]奶牛的旅行 Description 作为对奶牛们辛勤工作的回报,Farmer John决定带她们去附近的大城市玩一天。旅行的前夜,奶牛们在兴奋地讨论如何最好地享受这难得的闲暇。 很幸运地,奶牛们找到了一张详细的城市地图,上面标注了城市中所有L(2 <= L ...
分类:其他好文   时间:2017-12-28 11:39:59    阅读次数:158
bzoj3048[Usaco2013 Jan]Cow Lineup 尺取法
3048: [Usaco2013 Jan]Cow Lineup Description Farmer John's N cows (1 <= N <= 100,000) are lined up in a row. Each cow is identified by an integer "bree ...
分类:其他好文   时间:2017-12-25 23:23:31    阅读次数:227
洛谷P3038 [USACO11DEC]牧草种植Grass Planting
题目描述 Farmer John has N barren pastures (2 <= N <= 100,000) connected by N-1 bidirectional roads, such that there is exactly one path between any two p ...
分类:其他好文   时间:2017-12-23 23:10:48    阅读次数:218
poj 3281 Dining(网络流+拆点)
Dining Description Cows are such finicky eaters. Each cow has a preference for certain foods and drinks, and she will consume no others. Farmer John h ...
分类:其他好文   时间:2017-12-23 19:01:17    阅读次数:178
洛谷 P2731 骑马修栅栏 Riding the Fences
P2731 骑马修栅栏 Riding the Fences P2731 骑马修栅栏 Riding the Fences P2731 骑马修栅栏 Riding the Fences 题目背景 Farmer John每年有很多栅栏要修理。他总是骑着马穿过每一个栅栏并修复它破损的地方。 题目描述 John ...
分类:其他好文   时间:2017-12-23 12:10:06    阅读次数:223
BZOJ 1626 Usaco2007 Dec Building Roads 修建道路
1626: [Usaco2007 Dec]Building Roads 修建道路 Description Farmer John最近得到了一些新的农场,他想新修一些道路使得他的所有农场可以经过原有的或是新修的道路互达(也就是说,从任一个农场都可以经过一些首尾相连道路到达剩下的所有农场)。有些农场之间 ...
分类:其他好文   时间:2017-12-22 19:42:21    阅读次数:125
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