题目链接 题意:每个文本串的出现次数 分析:入门题,注意重复的关键字算不同的关键字,还有之前加过的清零.   新模板,加上last跑快一倍 #include <bits/stdc++.h> struct AC { static const int NODE = 10000 * 50 + 5; static const int SIZE = 26; int ch[NODE][SIZE], fail[NODE], last[NODE]; int end[NODE]; int sz; void cl…

Keywords Search Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 59360    Accepted Submission(s): 19520 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): 44687    Accepted Submission(s): 14103 Problem Description In the modern time, Search engine came into the life of everybody li…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2222 思路分析:该问题为多模式匹配问题,使用AC自动机解决:需要注意的问题是如何统计该待查询的字符串包含的关键字: 假设待查找的字符串为str[0..n],则str[i…j]可能为某一个关键字:假设当前正在匹配字符str[k],则以str[i..k]为关键字的所有可能 可能的关键字的最后一个字符为str[k],使用fail指针进行跳转并判断以str[k]结尾的该结点是否为关键字最后一个结点,重复进行…

HDU 2222 Keywords Search(查询关键字) Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others) [Description] [题目描述] In the modern time, Search engine came into the life of everybody like Google, Baidu, etc. Wiskey also wants to br…

Keywords Search Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 57353    Accepted Submission(s): 18820 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): 50451    Accepted Submission(s): 16236 Problem Description In the modern time, Search engine came into the life of everybody lik…

点击打开链接题目链接 Keywords Search Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 42838    Accepted Submission(s): 13488 Problem Description In the modern time, Search engine came into the life of eve…

Keywords Search Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 85068    Accepted Submission(s): 29646 Problem Description In the modern time, Search engine came into the life of everybody lik…

AC自动机基础题. #include <iostream> #include <cstdio> #include <cstring> #include <cstdlib> #include <queue> using namespace std; #define MAXL 1000005 #define TRIEN 26 ]; typedef struct Trie { int n; Trie *fail; Trie *next[TRIEN];…