题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4787 题目大意: 给你若干个单词,查询一篇文章里出现的单词数.. 就是被我水过去的...暴力重建AC自动机- -然后暴力查找.. #include <cstdio> #include <cstring> #include <algorithm> #include <queue> #include <map> #include <string&g…

题链: http://acm.hdu.edu.cn/showproblem.php?pid=4787 题解: AC自动机(强制在线构造) 题目大意: 有两种操作, 一种为:+S,表示增加模式串S, 另一种为:?S,表示查询S中有多少子串为已经给出的模式串. (同时由于输入根据上一次的答案加密 ,所以强制在线) (事先提一下,对于多次给出的相同模式串,是要去重的,至于怎么去重,就随便用trie树或者map+string就好了.) 进入正题: 难道真的要让AC自动机变得在线起来么? 其实还是用普通A…

Description Now Coach Pang is preparing for the Graduate Record Examinations as George did in 2011. At each day, Coach Pang can: "+w": learn a word w "?p": read a paragraph p, and count the number of learnt words. Formally speaking, co…

Lost's revenge Time Limit: 15000/5000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 3757    Accepted Submission(s): 1020 Problem Description Lost and AekdyCoin are friends. They always play "number game"(A bor…

GRE Words Revenge 题意和思路都和上一篇差不多. 有一个区别就是需要移动字符串.关于这个字符串,可以用3次reverse来转换, 前面部分翻转一下, 后面部分翻转一下, 最后整个串翻转一下就好了. 注意就是多组测试,需要初始化. #include<bits/stdc++.h> using namespace std; #define Fopen freopen("_in.txt","r",stdin); freopen("_ou…

HDU4787 GRE Words Revenge 题意: \(N\)次操作,每次记录一个\(01\)串或者查询一个\(01\)串能匹配多少个记录的串,强制在线 题解: 在线的AC自动机,利用分块来降低复杂度,建两个AC自动机,一个大的一个小的,每次往小的里面加字符串,当小的自动机的大小大于一定值之后把小的自动机和大的自动机合并,然后清空小的自动机 每次询问把小的自动机和大的自动机的答案加在一起即可 TIPS:不能把\(fail\)边直接作为子节点来建图,因为之后还要加字符串进去 //#prag…

题目 Source http://acm.hdu.edu.cn/showproblem.php?pid=4787 Description Now Coach Pang is preparing for the Graduate Record Examinations as George did in 2011. At each day, Coach Pang can: "+w": learn a word w "?p": read a paragraph p, an…

Lost's revenge Time Limit: 15000/5000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 2262    Accepted Submission(s): 565 Problem Description Lost and AekdyCoin are friends. They always play "number game"(A bori…

Minimum's Revenge Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 283    Accepted Submission(s): 219 Problem Description There is a graph of n vertices which are indexed from 1 to n. For any pai…

Lost and AekdyCoin are friends. They always play "number game"(A boring game based on number theory) together. We all know that AekdyCoin is the man called "nuclear weapon of FZU,descendant of Jingrun", because of his talent in the fie…