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[Luogu2214] Mooo Moo S
Description Farmer John has completely forgotten how many cows he owns! He is too embarrassed to go to his fields to count the cows, since he doesn't want the cows to realize his mental lapse. Instead, he decides to count his cows secretly by plantin[Usaco2006 Mar]Mooo 奶牛的歌声题解
题目链接 bzoj1657 思路： 本题可用单调栈思想来解。维护一个单调下降的序列，由于是下降的，所以栈里的每一头牛的声音都不能被后面的牛听到。当一个身高较大的牛加入栈时，栈不再单调，需要踢掉一些牛，而那些牛的身高都比它矮所以可以把那些牛的声音加到当前牛的伤残值里。而由于那些较矮的USACO Mooo Moo
洛谷 P2214 [USACO14MAR]哞哞哞Mooo Moo 洛谷传送门 JDOJ 2416: USACO 2014 Mar Silver 3.Mooo Moo JDOJ传送门 Description Problem 3: Mooo Moo [silver] [Brian Dean, 2014] Farmer John has completely forgotten how many cows he owns! He is too embarrassed to go to his fP2214 [USACO14MAR]哞哞哞Mooo Moo
一道不错的背包题。 首先，只考虑这个单点，我们一定是希望用最少的牛的组合来完成这个点的音量。因为有用的信息只是音量，而对于这个音量是怎么组合出来的，其实是无所谓的。所以，我们要每一个单点提供的音量的所有组合中，用最少牛数那一组，再西格玛。 那么考虑这个点提供的音量