原文链接 https://www.cnblogs.com/cly-none/p/ECFINAL2018J.html 题意:给出一个长度为\(n\)的字符串\(s\),要求给\(s\)的每个后缀\(s[i:]\)分配权值\(k_i\)(实数),满足\(0 \leq k_i \leq 1\),且\(\sum_i k_i = 1\).再此基础上,最大化 \[ \min_{i=1}^n \left( \sum_{j=1}^n k_j {\rm {lcp}} (s[i:],s[j:]) \right) \

2018ECfinal J. Philosophical Balance 题目大意: 给出一个字符串 \(s\) ,你需要给每一个 \(i\) 一个 \([0,1]\) 之间的权值 \(k_i\) ,且满足 \(\sum k_i=1\) .并且最小化 \[ \max_{i=1}^n(\sum_{j=1}^nlcp(suf(s,j),suf(s,i))\times k_j) \] 先证明一个比较简单的结论,把 \(s\) 的后缀树建出来,考虑后缀树的每一个子树,如果子树的根是 \(s\) 的一个后

目录 The 2018 ICPC Asia-East Continent Final A.Exotic - Ancient City(思路 并查集) J.Philosophical - Balance(后缀数组/后缀自动机 零和博弈) The 2018 ICPC Asia-East Continent Final 比赛链接 A.Exotic - Ancient City(思路 并查集) https://www.bilibili.com/video/av38542305 A 题面在这儿(或者去牛客

Counterfeit Dollar Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 36206   Accepted: 11561 Description Sally Jones has a dozen Voyageur silver dollars. However, only eleven of the coins are true silver dollars; one coin is counterfeit ev

NPOI 是 POI 项目的 .NET 版本.POI是一个开源的Java读写Excel.WORD等微软OLE2组件文档的项目. 使用 NPOI 你就可以在没有安装 Office 或者相应环境的机器上对 WORD/EXCEL 文档进行读写.NPOI是构建在POI 3.x版本之上的,它可以在没有安装Office的情况下对Word/Excel文档进行读写操作.使用 NPOI 你就可以在没有安装 Office 或者相应环境的机器上对 WORD/EXCEL 文档进行读写.NPOI是构建在POI 3.x版本

Description Sally Jones has a dozen Voyageur silver dollars. However, only eleven of the coins are true silver dollars; one coin is counterfeit even though its color and size make it indistinguishable from the real silver dollars. The counterfeit coi

解法(背包DP问题) (下为转) 其实感觉 像此题这种类型的并不属于dp范畴 虽然程序看起来使用的是递推这一过程,但总不能说开个二重循环就是dp吧 如果只从求解上来讲(不考虑数据值的范围), 只有枚举这唯一途径, 而此题的复杂度为O(20^20), 大约等于 10^26, 微机是很难在短时间内求解的. 而此题还有另一个限制, 就是数据值的范围, 虽然状态数那么多, 但是它们的范围有限这个时候, 状态产生大量重复, 于是, 程序可以优化为压缩这些重复状态, 从而减少开销 在实现的过程中, 确实划分

LB(Load balance)负载均衡集群 LVS-[NAT+DR]单实例实验 LVS+keeplived实验 LVS是Linux Virtual Server的简写,意即Linux虚拟服务器,是一个虚拟的服务器集群系统. 逻辑可分为: 1调度层 (Director):它是整个集群对外面的前端机,负责将客户的请求发送到一组服务器上执行,而客户认为服务是来自一个IP地址(我们可称之为虚拟IP地址)上的. 2[服务器池(server pool)/集群层(Real server)]:是一组真正执行客

Balance Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 13717   Accepted: 8616 Description Gigel has a strange "balance" and he wants to poise it. Actually, the device is different from any other ordinary balance. It orders two arms

C. Balance 题目链接 http://codeforces.com/contest/17/problem/C 题面 Nick likes strings very much, he likes to rotate them, sort them, rearrange characters within a string... Once he wrote a random string of characters a, b, c on a piece of paper and began

The Balance Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5706    Accepted Submission(s): 2311 Problem Description Now you are asked to measure a dose of medicine with a balance and a number o

Balance Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 9240 Accepted: 5670 Description Gigel has a strange "balance" and he wants to poise it. Actually, the device is different from any other ordinary balance. It orders two arms of n

Balance Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 11947 Accepted: 7464 Description Gigel has a strange "balance" and he wants to poise it. Actually, the device is different from any other ordinary balance. It orders two arms of

The Balance Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4497    Accepted Submission(s): 1808 Problem Description Now you are asked to measure a dose of medicine with a balance and a number o

Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 9163   Accepted: 5617 Description Gigel has a strange "balance" and he wants to poise it. Actually, the device is different from any other ordinary balance. It orders two arms of negli

The Balance Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 7212    Accepted Submission(s): 2978 Problem Description Now you are asked to measure a dose of medicine with a balance and a number

K - Balance Time Limit:1000MS     Memory Limit:30000KB     64bit IO Format:%I64d & %I64u Submit Status Description Gigel has a strange "balance" and he wants to poise it. Actually, the device is different from any other ordinary balance. It

题目连接:hdu_5616_Jam's balance 题意: 给你一些砝码,和一些要被称出的重量,如果这些砝码能称出来输出YES,否则输出NO 题解:我们想想,这题求组合方式,我们这里可以直接用母函数艹过去,这里我写的枚举子集的方式,其实就是母函数的形式 #include<cstdio> #define F(i,a,b) for(int i=a;i<=b;i++) ?-a:a;} ],dp[][]; int main(){ int t,n,m,sum,x; scanf("%d

题目网址:http://acm.hdu.edu.cn/showproblem.php?pid=5616 题目: Jam's balance Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1810    Accepted Submission(s): 754 Problem Description   Jim has a balance

The Balance Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 135 Accepted Submission(s): 88   Problem Description Now you are asked to measure a dose of medicine with a balance and a number of weig