[HDU2222]Keywords Search Problem Description In the modern time, Search engine came into the life of everybody like Google, Baidu, etc.Wiskey also wants to bring this feature to his image retrieval system.Every image have a long description, when use…

Problem Description In the modern time, Search engine came into the life of everybody like Google, Baidu, etc.Wiskey also wants to bring this feature to his image retrieval system.Every image have a long description, when users type some keywords to…

HDU2222 Keywords Search Problem Description In the modern time, Search engine came into the life of everybody like Google, Baidu, etc. Wiskey also wants to bring this feature to his image retrieval system. Every image have a long description, when us…

AC自动机模板题,给你n个模式串和一个文本串,问你有几个模式串在文本串出现过. 注意防止重复统计 这里推荐一波郭大爷的介绍,简单易懂. http://www.bilibili.com/video/av6295004/ 这个视频里的hdu2222代码好像有点问题,我现在这份代码已经更改. #include<cstdio> #include<cstring> #include<queue> using namespace std; queue<int>q; in…

题目链接:https://cn.vjudge.net/problem/HDU-2222 题意 给一些关键词,和一个待查询的字符串 问这个字符串里包含多少种关键词 思路 AC自动机模版题咯 注意一般情况不需要修改build方法,就像kmp里的getfail一样 一般的题目就是改改insert,query 一开始写的模版总是有问题,懒得改了 直接找的kuangbin的模版[原创]AC自动机小结 注意数组和指针的效率差不了多少,此题同一个算法的指针形式(296ms)比数组(187ms)慢110ms 说…

HDU2222 传送门 题目分析 裸题:注意构建自动机用的是模式串,思想和kmp很类似. code: #include<iostream> #include<cstdio> #include<cstring> using namespace std; const int N = 1e4 + 5, M = 55, L = 1e6 + 5; int T, n, tot, vst[N * M], vt; char t[M], s[L]; struct node{ int tr…

https://vjudge.net/problem/HDU-2222 题意:给几个模式串和一个文本串,问文本串中包含几个模式串. 思路:贴个板子不解释. #include<cstdio> #include<cstring> #include<queue> using namespace std; const int N=26; const int MAXN=500005; struct Trie{ int next[MAXN][N],fail[MAXN],end[MA…

地址:http://acm.split.hdu.edu.cn/showproblem.php?pid=2222 题目: Keywords Search Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 56558    Accepted Submission(s): 18493 Problem Description In the mo…

本文版权归ljh2000和博客园共有,欢迎转载,但须保留此声明,并给出原文链接,谢谢合作. 本文作者:ljh2000作者博客:http://www.cnblogs.com/ljh2000-jump/转载请注明出处,侵权必究,保留最终解释权!   Problem Description In the modern time, Search engine came into the life of everybody like Google, Baidu, etc.Wiskey also wants…

http://acm.hdu.edu.cn/showproblem.php?pid=2222 注意: 1. keyword可以相同,因此计算时要累计:cur->num++. 2. 同一个keyword在str中出现多次的话,只计算一次,所以算过后需要将num设为-1(表示已经计算了). 对于 25shehesayshrheryasherhs5shehesaysherheryasherhs sher中包含:she,he,her,sher四个关键字,计算顺序:she->he->e->s…