题目:CF474D Flowers 传送门 DP?递推? 首先可以很快看出这是一道 DP 的题目,但与其说是 DP,还不如说是递推. 大家还记得刚学递推时教练肯定讲过的一道经典例题吗?就是爬楼梯,一个有 \(n\) 阶的楼梯,一个人爬上去,每次可以爬一阶也可以爬两阶,问有多少种爬法?其实这道题也是一样的,只不过把 \(2\) 换成了 \(k\) 而已. 于是我们开始分析,定义 \(dp[i]\) 为吃 \(i\) 个蛋糕的吃法总数. 很容易看出,如果 \(i<k\),就不可以一口气吃掉,只能一个…

D. Flowers time limit per test 1.5 seconds memory limit per test 256 megabytes input standard input output standard output We saw the little game Marmot made for Mole's lunch. Now it's Marmot's dinner time and, as we all know, Marmot eats flowers. At…

Codeforces Round #258 (Div. 2) Devu and Flowers E. Devu and Flowers time limit per test 4 seconds memory limit per test 256 megabytes input standard input output standard output Devu wants to decorate his garden with flowers. He has purchased n boxes…

http://poj.org/problem?id=3262 Protecting the Flowers Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 4930   Accepted: 1965 Description Farmer John went to cut some wood and left N (2 ≤ N ≤ 100,000) cows eating the grass, as usual. When…

B. Alyona and flowers Problem Description: Let's define a subarray as a segment of consecutive flowers. The mother suggested some set of subarrays. Alyona wants to choose several of the subarrays suggested by her mother. After that, each of the flowe…

Description You want to arrange the window of your flower shop in a most pleasant way. You have F bunches of flowers, each being of a different kind, and at least as many vases ordered in a row. The vases are glued onto the shelf and are numbered con…

Pashmak and Flowers Codeforces Round #261 (Div. 2) B. Pashmak and Flowers time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Pashmak decided to give Parmida a pair of flowers from the garden.…

题目网址:http://acm.hdu.edu.cn/showproblem.php?pid=4325 Description As is known to all, the blooming time and duration varies between different kinds of flowers. Now there is a garden planted full of flowers. The gardener wants to know how many flowers w…

104. Little shop of flowers time limit per test: 0.25 sec. memory limit per test: 4096 KB 问题: 你想要将你的花窗安排得最具美感.有F束花,每一束花都不一样,至少有F个按顺序排成一行的花瓶.花瓶从左到右,依次编号1-V.而花放置的位置是可以改变的,花依次编号1到F.花的序号有一个特征,即是序号决定了花束出现在花瓶里的顺序.例如,有两束花编号i和j,满足i<j,那么i所在的花瓶一定要在j所在花瓶的左边,即是i…

题 There are n sharks who grow flowers for Wet Shark. They are all sitting around the table, such that sharks i andi + 1 are neighbours for all i from 1 to n - 1. Sharks n and 1 are neighbours too. Each shark will grow some number of flowers si. For i…

C. Watering Flowers time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A flowerbed has many flowers and two fountains. You can adjust the water pressure and set any values r1(r1 ≥ 0) and r2(r…

[POJ1157]LITTLE SHOP OF FLOWERS 试题描述 You want to arrange the window of your flower shop in a most pleasant way. You have F bunches of flowers, each being of a different kind, and at least as many vases ordered in a row. The vases are glued onto the s…

Flowers Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4325 Description As is known to all, the blooming time and duration varies between different kinds of flowers. Now there is a garden plant…

Vases and Flowers Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 38    Accepted Submission(s): 10 Problem Description Alice is so popular that she can receive many flowers everyday. She has N v…

C. Watering Flowers 题目连接: http://www.codeforces.com/contest/617/problem/C Descriptionww.co A flowerbed has many flowers and two fountains. You can adjust the water pressure and set any values r1(r1 ≥ 0) and r2(r2 ≥ 0), giving the distances at which t…

Problem Description Alice is so popular that she can receive many flowers everyday. She has N vases numbered from 0 to N-1. When she receive some flowers, she will try to put them in the vases, one flower in one vase. She randomly choose the vase A a…

http://acm.hdu.edu.cn/showproblem.php?pid=4614 HDU 4614 Vases and Flowers (2013多校第二场线段树) // #pragma comment(linker, "/STACK:1024000000,1024000000") #include <iostream> #include <cstdio> #include <cstring> #include <sstream&g…

Flowers Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 2616    Accepted Submission(s): 1287 Problem Description As is known to all, the blooming time and duration varies between different kinds…

Flowers Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3679    Accepted Submission(s): 2412 Problem Description As you know, Gardon trid hard for his love-letter, and now he's spending too muc…

Description Farmer John went to cut some wood and left N (2 <= N <= 100,000) cows eating the grass, as usual. When he returned, he found to his horror that the cows were in his garden eating his beautiful flowers. Wanting to minimize the subsequent…

Vases and Flowers Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others) Total Submission(s): 347    Accepted Submission(s): 108 Problem Description Alice is so popular that she can receive many flowers everyday. She has…

1634: [Usaco2007 Jan]Protecting the Flowers 护花 Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 448  Solved: 276[Submit][Status] Description Farmer John went to cut some wood and left N (2 <= N <= 100,000) cows eating the grass, as usual. When he retur…

Problem Description As you know, Gardon trid hard for his love-letter, and now he's spending too much time on choosing flowers for Angel. When Gardon entered the flower shop, he was frightened and dazed by thousands kinds of flowers. "How can I choos…

B. Pashmak and Flowers time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Pashmak decided to give Parmida a pair of flowers from the garden. There are n flowers in the garden and the i-th of t…

C. Wet Shark and Flowers time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output There are n sharks who grow flowers for Wet Shark. They are all sitting around the table, such that sharks i and i …

考虑相邻的两头奶牛 a , b , 我们发现它们顺序交换并不会影响到其他的 , 所以我们可以直接按照这个进行排序 --------------------------------------------------------------------------------- #include<cstdio> #include<cstring> #include<algorithm> #include<iostream>   #define rep( i ,…

Flowers Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 2579    Accepted Submission(s): 1265 Problem Description As is known to all, the blooming time and duration varies between different kinds…

题目链接:Codeforces 451E Devu and Flowers 题目大意:有n个花坛.要选s支花,每一个花坛有f[i]支花.同一个花坛的花颜色同样,不同花坛的花颜色不同,问说能够有多少种组合. 解题思路:2n的状态,枚举说那些花坛的花取超过了,剩下的用C(n−1sum+n−1)隔板法计算个数.注意奇数的位置要用减的.偶数的位置用加的.容斥原理. #include <cstdio> #include <cstring> #include <cmath> #in…

B. Ciel and Flowers time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Fox Ciel has some flowers: r red flowers, g green flowers and b blue flowers. She wants to use these flowers to make seve…

Alyona and flowers time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Little Alyona is celebrating Happy Birthday! Her mother has an array of n flowers. Each flower has some mood, the mood of…