Problem Description In this problem, you are given a string s and q queries. For each query, you should answer that when all distinct substrings of string s were sorted lexicographically, which one is the k-th smallest.  A substring si...j of the str…

题目链接 思路 想到了,但是木写对啊....代码 各种bug,写的乱死了.... 输出最靠前的,比较折腾... #include <cstdio> #include <cstring> #include <algorithm> #include <iostream> #include <cmath> #include <map> using namespace std; #define N 501000 #define LL __in…

题意:给定一个串长度<=1e5,将其所有的不同的字串按照字典序排序,然后q个询问,每次询问字典序第k小的的起始坐标,并且起始坐标尽量小. 分析: 一开始看错题意,没有意识到是求不同的字串中第k小的,果断不知道怎么做,感觉如果题目改成这样,似乎还有点难度,至少对我来说. 好了,这个题目是考虑不同的字串,首先后缀数组处理,也就是讲后缀按照字典序排序,对于每个后缀开始的字串,如h[i],容易知道i和i-1的后缀的LCP长度为h[i]那么i中除开前h[i]个字串,之后的字串在i-1之前都是没有出现过的,…

后缀数组+RMQ+二分 后缀数组二分确定第K不同子串的位置 , 二分LCP确定可选的区间范围 , RMQ求范围内最小的sa Boring String Problem Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 661    Accepted Submission(s): 183 Problem Description In thi…

题目 Source http://acm.hdu.edu.cn/showproblem.php?pid=5008 Description In this problem, you are given a string s and q queries. For each query, you should answer that when all distinct substrings of string s were sorted lexicographically, which one is…

练习一下字符串,做一下这道题. 首先是关于一个字符串有多少不同子串的问题,串由小到大排起序来应该是按照sa[i]的顺序排出来的产生的. 好像abbacd,排序出来的后缀是这样的 1---abbacd     第一个串产生的6个前缀都是新的子串 2---acd          第二个串除了和上一个串的前缀1 3-1=2 产生了2个子串 3---bacd        4-0=4 4---bbacd      5-1=4 5---cd           2-0=0 6---d          …

Boring String Problem Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1848    Accepted Submission(s): 492 Problem Description In this problem, you are given a string s and q queries. For each qu…

hdu 3374 String Problem 最小表示法 view code#include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #include <map> #include <string> using namespace std; const int N = 10010; int n; char s[105]; map<…

String Problem Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2706    Accepted Submission(s): 1140 Problem Description Give you a string with length N, you can generate N strings by left shift…

HDU 3374 String Problem (KMP+最大最小表示) String Problem Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1602    Accepted Submission(s): 714 Problem Description Give you a string with length N, you c…