题目链接:https://vjudge.net/problem/HDU-4763 Theme Section Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4264    Accepted Submission(s): 2056 Problem Description It's time for music! A lot of popu…

Theme Section Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5091    Accepted Submission(s): 2550 Problem Description It's time for music! A lot of popular musicians are invited to join us in t…

地址:http://acm.hdu.edu.cn/showproblem.php?pid=4763 题目: Theme Section Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3491    Accepted Submission(s): 1623 Problem Description It's time for music!…

Theme Section Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1114    Accepted Submission(s): 579 Problem Description It's time for music! A lot of popular musicians are invited to join us in t…

题目描述 给定一个字符串S,要求你找到一个最长的子串,它既是S的前缀,也是S的后缀,并且在S的内部也出现过(非端点) 题解 CF原题不解释....http://codeforces.com/problemset/problem/126/B KMP的失配函数fail[i]的值就是s[0..i]的最长前缀且是后缀的长度~~~,因此我们从S的末尾位置开始沿着失配函数跑即可,对于当前fail[i],判断前缀s[0-i]是否在s[i+1..length(s)-i]是否出现即可~~~~如果存在则是最长子串的…

题意:求最长的子串E,使母串满足EAEBE的形式,A.B可以任意,并且不能重叠. 题目链接:http://acm.split.hdu.edu.cn/showproblem.php?pid=4763 思路:这题对next数组可以说是考察的非常的细,也是通过这道题,也让我对next数组有了更深刻的了解.或者说之前只是云里雾里.(题外话就到这).首先我们求出该字符串的Next数组,我们都知道对于Next[i]是从串首开始长度为i的子串的前缀与后缀相同的最大长度.那么我们标记字符串的中间位置,就是已该位…

kmp中next数组的含义是:next[i]表示对于s[0]~s[i-1]这个前缀而言,最大相等的前后缀的长度是多少.规定next[0]=-1. 迭代for(int i=next[i];i!=-1;i=next[i]) 就可以得到某个前缀所有长度相等的前后缀的长度. 这题你就暴力枚举整个字符串的所有相等的前后缀,然后暴力判中间的部分是否存在即可.当然使用next数组会很简便. #include<cstdio> #include<cstring> using namespace st…

Theme Section Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1995 Accepted Submission(s): 943 Problem Description It's time for music! A lot of popular musicians are invited to join us in the mus…

Theme Section Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 574    Accepted Submission(s): 308 Problem Description It's time for music! A lot of popular musicians are invited to join us in th…

题目: It's time for music! A lot of popular musicians are invited to join us in the music festival. Each of them will play one of their representative songs. To make the programs more interesting and challenging, the hosts are going to add some constra…