你若盛开 清风自来

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 glu

A palindrome is a symmetrical string, that is, a string read identically from left to right as well as from right to left. You are to write a program which, given a string, determines the minimal numb

Given a sequence a11,a22,a33......ann, your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the max sum in this sequence is 6 + (-1) + 5 + 4 = 14.InputThe fi

You're given a tree with weights of each node, you need to find the maximum subtree of specified size of this tree.Tree Definition A tree is a connected graph which contains no cycles.

#include#include#include#include#include using namespace std;const int MAXN=6005;vector tree[MAXN]; int n,r,maxn;int value[MAXN];int root[MAXN];int dp[MAXN][2]; //dp[i][0]代表第i个人不来 dp[i]

Michael喜欢滑雪百这并不奇怪， 因为滑雪的确很刺激。可是为了获得速度，滑的区域必须向下倾斜，而且当你滑到坡底，你不得不再次走上坡或者等待升降机来载你。Michael想知道载一个区域中最长底滑坡。区域由一个二维数组给出。数组的每个数字代表点的高度。下面是一个例子1 2 3 4 516 17 18 19 615 24 25 20 714 23 22 21 8

Farmer John goes to Dollar Days at The Cow Store and discovers an unlimited number of tools on sale. During his first visit, the tools are selling variously for $1, $2, and $3. Farmer John has exactly

问题 C: 母鸡下蛋鸡国中的母鸡最擅长下蛋了，MGMG 是鸡国中一只以下蛋产量高而闻名全鸡国的母鸡。 鸡国专供下蛋的 n 个鸡窝呈一字排列在鸡国的“下蛋中心”，从左到右依次编号为 1 到n。每个鸡窝都有一个最大可下蛋的量，其中第 i 个鸡窝的最大可下蛋量为 ci 。有时候由于MGMG 产量实在太大而无法在一个鸡窝中下完所有的蛋，不得不转移到隔壁的鸡窝继续下蛋，如果隔壁的鸡窝还是不能让它

题目描述Czyzoiers 都想知道小 x 为什么对鸡蛋饼情有独钟。经过一番逼问，小 x 道出了实情：因为他喜欢圆。最近小 x 又发现了一个关于圆的有趣的问题：在圆上有2N 个不同的点，小 x 想用 N 条线段把这些点连接起来（每个点只能连一条线段），使所有的线段都不想交，他想知道这样的连接方案有多少种？输入有且仅有一个正整数 N（N≤3000）。输出要求的