AC自动机模板,注意!ch,Fail,lab数组的大小不是n而是节点个数,需要认真计算! #include <iostream> #include <algorithm> #include <cstdio> #include <cstring> #include <cmath> #include <ctime> #include <cstdlib> #include <queue> using namespac…

题目链接:https://cn.vjudge.net/contest/280743#problem/A 题目大意:首先给你T组测试样例,然后给你n个字符串,最后再给你一个模式串,然后问你这一些字符串中是模式串的子串的有多少个? 具体思路:AC自动机模板题,先说一下各个数组的作用吧,ch数组是字典树中的数组,val也是字典树中的数组,储存的是从根节点到当前这个节点是不是有字符串.fail和last就是AC自动机中的数组了,fail数组的作用就是从根节点到当的节点形成的字符串的后缀是一个新的路径的前…

只是记录一下代码 AC自动机算法的教程请移步这里 还有这里 指针看着懵逼的还可以看一下这里 #include<iostream> #include<cstdio> #include<queue> #include<cstring> #define maxn 10010 #define maxl 1000100 using namespace std; int n; char s[maxl]; struct ac_automation { int tot; s…

[题目链接] https://loj.ac/problem/10057 [题意] 原题来自:HDU 2222 给定  n 个长度不超过 50 的由小写英文字母组成的单词准备查询,以及一篇长为 m 的文章,问:文中出现了多少个待查询的单词.多组数据. [题解] 模板题 [代码] #pragma GCC optimize(2) #include<queue> #include<cstdio> #include<cstring> #include<iostream>…

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…

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…

Keywords Search Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 50435    Accepted Submission(s): 16233 Problem Description In the modern time, Search engine came into the life of everybody li…

Keywords Search Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 46676    Accepted Submission(s): 14858 Problem Description In the modern time, Search engine came into the life of everybody lik…

Keywords Search Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 79383    Accepted Submission(s): 27647 Problem Description In the modern time, Search engine came into the life of everybody lik…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2222 Keywords Search Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 65272    Accepted Submission(s): 21782 Problem Description In the modern ti…