求最大的公共前缀: 用后缀数组做: 其实暴力也可以过: #include<cstdio> #include<cstring> #include<algorithm> #define maxn 2009 using namespace std; int s[maxn]; int sa[maxn],t[maxn],t2[maxn],c[maxn],n; void build_sa(int m) { int *x=t,*y=t2; ; i<m; i++)c[i]=; ;…

思路:d[a][b][c][d]表示从已经第一个篮子取了a颗糖,第二个取了b颗糖,第三个取了c颗糖,第四个取了d颗糖最多还能够获得多少糖果.首先明白一个问题:如果能分别取a,b,c,d个,不论如何取,最后篮子中剩余的糖果颜色和个数都是一样的.那么一旦搜索到一个已经被搜索过得状态,直接返回即可,没必要继续搜索.   AC代码: #include<cstdio> #include<algorithm> #include<cstring> #include<utilit…

https://vjudge.net/problem/UVA-10118 题目 桌上有4堆糖果,每堆有$N$($N\leqslant 40$)颗.有个熊孩子拿了个可以装5颗糖的篮子,开始玩无聊的装糖游戏.他每次选一堆糖,并把这堆最上面的糖装进篮子里面,如果篮子里有两个种类相同的糖,那么他就把这两个糖装进自己的口袋里.给出四堆糖中每一颗糖的种类(1..20),问最多能装多少对糖. 题解 一开始看这题,拿糖的顺序有$\mathcal{O}(P(4^40,40))$种,一下就茫然了(估计得太松了……)…

题意:有4堆糖果,每堆有n(最多40)个,有一个篮子,最多装5个糖果,我们每次只能从某一堆糖果里拿出一个糖果,如果篮子里有两个相同的糖果, 那么就可以把这两个(一对)糖果放进自己的口袋里,问最多能拿走多少对糖果. 析:首先看到的是时间30s,这么长时间,一想应该是暴力了吧,后来一想应该是记忆化搜索,既然这么长时间,应该得优化一下,不然可能超时, 但是数据好像挺水,才运行了60ms,并不知道是怎么回事,接下来说说这个题,用 d[a,b,c,d] 来表示 分别从 第一,二,三,四堆拿的最多糖果, 如…

题意:桌上有4堆糖果,每堆有N(N<=40)颗.佳佳有一个最多可以装5颗糖的小篮子.他每次选择一堆糖果,把最顶上的一颗拿到篮子里.如果篮子里有两颗颜色相同的糖果,佳佳就把它们从篮子里拿出来放到自己的口袋里.如果篮子满了而里面又没有相同颜色的糖果,游戏结束,口袋里的糖果就归他了.问最多能拿到多少对糖果. 分析: 1.dp[a][b][c][d]表示,当4堆糖果分别剩下a,b,c,d颗时,能拿到的最大糖果对数. 2.糖果种类最多20,所以用vis数组标记篮子里是否有该糖果. #pragma comm…

There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more candies…

There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more candies…

There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more candies…

463. Island Perimeterhttps://leetcode.com/problems/island-perimeter/就是逐一遍历所有的cell,用分离的cell总的的边数减去重叠的边的数目即可.在查找重叠的边的数目的时候有一点小技巧,就是沿着其中两个方向就好,这种题目都有类似的规律,就是可以沿着上三角或者下三角形的方向来做.一刷一次ac,但是还没开始注意codestyle的问题,需要再刷一遍. class Solution { public: int islandPerime…

135. Candy There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get mo…

Candy There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more ca…

There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more candies…

题目描述: There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more ca…

There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more candies…

Candy There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more ca…

There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more candies…

There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more candies…

原文:http://www.cnblogs.com/AndyJee/p/4483043.html There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy…

There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more candies…

题目: There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more cand…

1 题目 There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more can…

There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more candies…

Question There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more…

分糖果 There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more cand…

题目地址: https://leetcode.com/problems/candy/ 题目内容: Candy Total Accepted: 43150 Total Submissions: 203841 Difficulty: Hard There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected…

本文senlie原版的,转载请保留此地址:http://blog.csdn.net/zhengsenlie Candy Total Accepted: 16494 Total Submissions: 87468My Submissions There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjecte…

题目描述 There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more can…

[题目] There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more can…

There are N children standing in a line. Each child is assigned a rating value. You are giving candies to these children subjected to the following requirements: Each child must have at least one candy. Children with a higher rating get more candies…

/** * Source : https://oj.leetcode.com/problems/candy/ * * There are N children standing in a line. Each child is assigned a rating value. * * You are giving candies to these children subjected to the following requirements: * * Each child must have…