It is well known that AekdyCoin is good at string problems as well as number theory problems. When given a string s, we can write down all the non-empty prefixes of this string. For example: s: "abab" The prefixes are: "a", "ab&qu…

链接:http://www.cnblogs.com/jackge/archive/2013/04/20/3032942.html 题意:给定一字符串,求它所有的前缀出现的次数的和.这题很纠结,一开始不知道怎么做,如果直接统计子串在主串中出现的次数,orz···肯定 TLE,后来发现这题可以直接从next数组入手,因为next数组表示的是子串中最长公共前后缀串的长度,如果用dp[i]表示该字符串前i个字符中出 现任意以第i个字符结尾的前缀的次数,它的递推式是 dp[i]=dp[next[i]]+1…

Count the string Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 14096    Accepted Submission(s): 6462 Problem Description It is well known that AekdyCoin is good at string problems as well as…

题目链接:https://vjudge.net/problem/HDU-3336 Count the string Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 11760    Accepted Submission(s): 5479 Problem Description It is well known that AekdyCoi…

Count the string Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 8845    Accepted Submission(s): 4104 Problem Description It is well known that AekdyCoin is good at string problems as well as n…

Count the string Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3797    Accepted Submission(s): 1776 Problem Description It is well known that AekdyCoin is good at string problems as well as nu…

Count New String 题意: 定义字符串函数 \(f(S,x,y)(1\le x\le y\le n)\),返回一个长度为y-x+1的字符串,第 i 位是 \(max_{i=x...x+k-1}S_i\) 设集合\(A = {f(f(S, x_1,y_1),x_2-x_1+1,y_2-x_1+1)|1\le x_1 \le x_2 \le y_2 \le y_2 \le n}\) 求集合A 的大小 \(N\le 1e5\) 字符集大小 <=10 分析: 先放出官方题解 方法一 核心点…

Count the string Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3351    Accepted Submission(s): 1564 Problem Description It is well known that AekdyCoin is good at string problems as well as n…

D - Count the string Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Description It is well known that AekdyCoin is good at string problems as well as number theory problems. When given a string s, we can wr…

Count the string Problem Description It is well known that AekdyCoin is good at string problems as well as number theory problems. When given a string s, we can write down all the non-empty prefixes of this string. For example:s: "abab"The prefi…