4760: [Usaco2017 Jan]Hoof, Paper, Scissors Time Limit: 10 Sec  Memory Limit: 128 MBSubmit: 136  Solved: 100[Submit][Status][Discuss] Description You have probably heard of the game "Rock, Paper, Scissors". The cows like to play a similar game th…

题意:玩n次剪刀石头布,对方每次出什么已经知道了.你出的招数必须是连续的几段(不能超过k+1段),问你最多赢几次.(n<=100000,k<=20) 正常做法:f[i][j][k]表示前i次,分j段,最后一次出的是k(k=0,1,2)时最多赢几次,可以O(nk)解决,转移时看最近一次有没有新分一段即可. 智障做法:我们同样定义f[i][j][k]表示前i次,分j段,最后一次出的是k时最多赢几次,但转移的时候考虑最近的一段,也就是枚举最近的一段是从哪里开始的,那么这就变成了1D1D动态规划,打表…

4758: [Usaco2017 Jan]Subsequence Reversal Time Limit: 10 Sec  Memory Limit: 128 MBSubmit: 76  Solved: 52[Submit][Status][Discuss] Description Farmer John is arranging his NN cows in a line to take a photo (1≤N≤50). The height of the iith co w in sequ…

题目大意: 一种游戏(类似于石头剪刀布):两个人分别给出一个字母,然后比较:H>S,S>P,P>H,我们已知对手的字母顺序,求在前n局中我们最多能赢多少次. 由于出字母的人非常懒,所以开局后会选定一种字母,中途只会改变k次,剩余状态下只会不停重复上一次出的字母,所以请你解决这个问题: ————————————————我是分割线———————————————— 好吧,这道题就是DP题. f[i][j][k]表示出到第i局,改变了j次,目前出的是第k个字母的最多赢的局数. 然后每次DP可以从…

P3609 [USACO17JAN]Hoof, Paper, Scissor蹄子剪刀… 题目背景 欢迎提供翻译,请直接在讨论区发帖,感谢你的贡献. 题目描述 You have probably heard of the game "Rock, Paper, Scissors". The cows like to play a similar game they call "Hoof, Paper, Scissors". The rules of "Hoof…

描述 Rock, Paper, Scissors is a classic hand game for two people. Each participant holds out either a fist (rock), open hand (paper), or two-finger V (scissors). If both players show the same gesture, they try again. They continue until there are two d…

BZOJ_2580_[Usaco2012 Jan]Video Game_AC自动机+DP Description Bessie is playing a video game! In the game, the three letters 'A', 'B', and 'C' are the only valid buttons. Bessie may press the buttons in any order she likes; however, there are only N disti…

BZOJ_4756_[Usaco2017 Jan]Promotion Counting_树状数组 Description n只奶牛构成了一个树形的公司,每个奶牛有一个能力值pi,1号奶牛为树根. 问对于每个奶牛来说,它的子树中有几个能力值比它大的. Input n,表示有几只奶牛 n<=100000 接下来n行为1-n号奶牛的能力值pi 接下来n-1行为2-n号奶牛的经理(树中的父亲) Output 共n行,每行输出奶牛i的下属中有几个能力值比i大 Sample Input 5 80428938…

2018 ACM-ICPC 中国大学生程序设计竞赛线上赛:https://www.jisuanke.com/contest/1227 题目链接:https://nanti.jisuanke.com/t/26219 Rock Paper Scissors Lizard Spock Description: Didi is a curious baby. One day, she finds a curious game, which named Rock Paper Scissors Lizard…

4756: [Usaco2017 Jan]Promotion Counting Time Limit: 10 Sec  Memory Limit: 128 MBSubmit: 305  Solved: 217[Submit][Status][Discuss] Description The cows have once again tried to form a startup company, failing to remember from past experience t hat cow…