4423: Necklace Description baihacker bought a necklace for his wife on their wedding anniversary. A necklace with N pearls can be treated as a circle with N points where the distance between any two adjacent points is the same. His wife wants to colo…

4423: Necklace 题目连接: http://acm.scu.edu.cn/soj/problem.action?id=4423 Description baihacker bought a necklace for his wife on their wedding anniversary. A necklace with N pearls can be treated as a circle with N points where the distance between any…

Necklace frog has \(n\) gems arranged in a cycle, whose beautifulness are \(a_1, a_2, \dots, a_n\). She would like to remove some gems to make them into a beautiful necklace without changing their relative order. Note that a beautiful necklace can be…

最长上升子序列,枚举. 因为$10000$最多只有$10$个,所以可以枚举采用哪一个$10000$,因为是一个环,所以每次枚举到一个$10000$,可以把这个移到最后,然后算从前往后的$LIS$和从后往前的$LIS$,然后枚举一下哪里断开就可以了. #include<bits/stdc++.h> using namespace std; ],n; ],dp1[],dp2[]; ],u,mx1[],mx2[]; void get(int L,int R,int l,int r,int rt) {…

题目 Source http://acm.hdu.edu.cn/showproblem.php?pid=5730 Description Perhaps the sea‘s definition of a shell is the pearl. However, in my view, a shell necklace with n beautiful shells contains the most sincere feeling for my best lover Arrietty, but…

Shell Necklace Time Limit: 16000/8000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 534    Accepted Submission(s): 227 Problem Description Perhaps the sea‘s definition of a shell is the pearl. However, in my view,…

SCU 4437  Carries Time Limit:0MS     Memory Limit:0KB     64bit IO Format:%lld & %llu  Practice  Description Carries frog has nn integers a1,a2,…,ana1,a2,…,an, and she wants to add them pairwise. Unfortunately, frog is somehow afraid of carries (进位).…

 SCU 4438 Censor Time Limit:0MS     Memory Limit:0KB     64bit IO Format:%lld & %llu  Practice Description Censor frog is now a editor to censor so-called sensitive words (敏感词). She has a long text pp. Her job is relatively simple -- just to find the…

 SCU 4440 Rectangle Time Limit:0MS     Memory Limit:0KB     64bit IO Format:%lld & %llu  Practice Description Rectangle frog has a piece of paper divided into nn rows and mm columns. Today, she would like to draw a rectangle whose perimeter is not gr…

Sol 对偶图+并查集. 思路非常好,将网格图转化成对偶图,在原图中删掉一条边,相当于在对偶图中连上一条边(其实就是网格的格点相互连边),每次加边用并查集维护就可以了. 哦对,还要注意边界就是网格外面看做是一个点就可以了. PS:好久前的代码. Code /************************************************************** Problem: 4423 User: BeiYu Language: C++ Result: Accepted T…

Necklace/center> 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5727 Description SJX has 2*N magic gems. N of them have Yin energy inside while others have Yang energy. SJX wants to make a necklace with these magic gems for his beloved BHB. To avoid…

Necklace Time Limit: 15000/5000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2083    Accepted Submission(s): 747 Problem Description Mery has a beautiful necklace. The necklace is made up of N magic balls. Each ba…

/* ID: vincent63 LANG: C TASK: beads */ #include <stdio.h> #include<stdlib.h> #include<string.h> int findmax(char s[],int n){ int i,j,count,max,l,r; char left,right; max=; count=; int p; ,j=;j<n;i++,j++){ l=i; r=j; while(s[l]=='w'){ l…

A - A Time Limit:0MS     Memory Limit:0KB     64bit IO Format:%lld & %llu Submit Status Practice SCU 4424 Description Time Limit: 1000ms Description Given N distinct elements, how many permutations we can get from all the possible subset of the eleme…

[BZOJ1789][BZOJ1830][Ahoi2008]Necklace Y型项链 试题描述 欢乐岛上众多新奇的游乐项目让小可可他们玩的非常开心.现在他们正在玩比赛串项链的游戏,谁串的最快就能得到优厚的奖品.这可不是普通的项链,而是一种Y型项链,项链的最中间有一颗大珍珠作为结合点,从大珍珠上连出来3条由各种宝石串起来的链子.比赛的规则是这样的:每次可以从三条链子中某一条的一端取下来一个宝石,或者安上去一个宝石,称为一次操作,经过若干次操作,最终使得三条链子完全相同.想要赢得比赛,那么只能使用…

I NEED A OFFER!     64bit IO Format: %lld & %llu Submit Status Description Description Speakless很早就想出国,现在他已经考完了所有需要的考试,准备了所有要准备的材料, 于是,便需要去申请学校了.要申请国外的任何大学,你都要交纳一定的申请费用, 这可是很惊人的.Speakless没有多少钱,总共只攒了n万美元.他将在m个学校中选择若干的 (当然要在他的经济承受范围内).每个学校都有不同的申请费用a(万美…

Description Beads of red, blue or green colors are connected together into a circular necklace of n beads ( n < 24 ). If the repetitions that are produced by rotation around the center of the circular necklace or reflection to the axis of symmetry ar…

Accepted Necklace Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3136 Accepted Submission(s): 1213 Problem Description I have N precious stones, and plan to use K of them to make a necklace for m…

题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=2660 Accepted Necklace Description I have N precious stones, and plan to use K of them to make a necklace for my mother, but she won't accept a necklace which is too heavy. Given the value and the weight…

SCU - 4440 Rectangle Time Limit: Unknown   Memory Limit: Unknown   64bit IO Format: %lld & %llu Submit Status Description Rectangle frog has a piece of paper divided into n rows and m columns. Today, she would like to draw a rectangle whose perimeter…

4436: Easy Math Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.scu.edu.cn/soj/problem.action?id=4436 Description Given n integers a1,a2,…,an, check if the sum of their square root a1+a2+…+an is a integer. Input The input consists of multiple…

[题目链接] http://www.lydsy.com/JudgeOnline/problem.php?id=4423 [题意] 给定一个平面图,随时删边,并询问删边后两点是否连通.强制在线. [科普] 设有平面图G=(V,E),满足下列条件的图G'= (V',E') 称为图G的对偶图:G的任一面Ri内有且仅有一点Vi':对G的域Ri和Rj的共同边界Ek,画一条边Ek'=(Vi',Vj')且只与Ek交于一点:若Ek完全处于Ri中,则Vi'有一自环Ek',如下图G'是G的对偶图: From her…

题目链接: http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=995 Problem D: The Necklace  My little sister had a beautiful necklace made of colorful beads. Two successive beads in the necklace shared a c…

P1203 [USACO1.1]坏掉的项链Broken Necklace 标签 搜索/枚举 USACO 难度 普及- 题目描述 你有一条由N个红色的,白色的,或蓝色的珠子组成的项链(3<=N<=350),珠子是随意安排的. 这里是 n=29 的二个例子: 第一和第二个珠子在图片中已经被作记号. 图片 A 中的项链可以用下面的字符串表示: brbrrrbbbrrrrrbrrbbrbbbbrrrrb 假如你要在一些点打破项链,展开成一条直线,然后从一端开始收集同颜色的珠子直到你遇到一个不同的颜色珠…

UVA10054 The Necklace 链接:http://acm.hust.edu.cn/vjudge/problem/viewProblem.action?id=18806 [思路] 欧拉回路. 把每一种颜色看作结点,每一个珠子看作边,构图后求欧拉回路即用所有的珠子构成一条项链. 需要注意的是ans的加入是逆序的,G记录的是边出现的次数. [代码] #include<cstdio> #include<queue> #include<vector> #includ…

Problem Description I have N precious stones, and plan to use K of them to make a necklace for my mother, but she won't accept a necklace which is too heavy. Given the value and the weight of each precious stone, please help me find out the most valu…

Necklace of Beads Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 7763   Accepted: 3247 Description Beads of red, blue or green colors are connected together into a circular necklace of n beads ( n < 24 ). If the repetitions that are pro…

题目链接:http://acm.scu.edu.cn/soj/problem/4440/ 题目大意:给一个n*m的方格,求周长小于等于k的矩形有多少个. 解题思路:我之前直接暴力,显然超时,所以后来发现,可以用等差数列的求前n项和公式来代替一层for循环,这样就只有一重循环了,不会超时. AC代码: #include <cstdio> #include <cmath> #include <cstring> #include <algorithm> #incl…

题目链接:http://acm.scu.edu.cn/soj/problem/4436/ 题意:给你n个整数,求这n个数的平方根和是否是一个整数: 解题思路:如果这题每个数给他算出来,必然费时间,可能还会超精度,所以巧妙的方法就是判断这些整数是否全是完全平方数,如果有一个不是,则他们的平方根和肯定不是一个整数. AC代码: #include <cstdio> #include <cmath> #include <cstring> #include <algorit…

ZeptoLab Code Rush 2015 D. Om Nom and Necklace [题意] 给出一个字符串s,判断其各个前缀是否是 ABABA…ABA的形式(A和B都可以为空,且A有Q+1个,B有Q个,Q给定). [官方题解] 对于前缀P,我们可以把它拆成P=SSSS…SSSST,其中T是S的前缀.显然可以用KMP算法,时间复杂度是O(n). 当T=S:P=SSS…S.假设S出现了R次.如果转换为ABABAB…ABABA的形式,A和B是由几个S组成,而且最后的A一定是P的一个后缀.由…