题目连接:hdu 3695 Computer Virus on Planet Pandora 题目大意:给定一些病毒串,要求推断说给定串中包括几个病毒串,包括反转. 解题思路:将给定的字符串展开,然后匹配一次后反转后再匹配一次. #include <cstdio> #include <cstring> #include <queue> #include <vector> #include <iostream> #include <algor…

Computer Virus on Planet Pandora Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 256000/128000 K (Java/Others)Total Submission(s): 2578    Accepted Submission(s): 713 Problem Description     Aliens on planet Pandora also write computer progra…

Computer Virus on Planet Pandora Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 256000/128000 K (Java/Others) Total Submission(s): 4090    Accepted Submission(s): 1072 Problem Description     Aliens on planet Pandora also write computer prog…

Computer Virus on Planet Pandora Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 256000/128000 K (Java/Others)Total Submission(s): 2975    Accepted Submission(s): 833 Problem Description     Aliens on planet Pandora also write computer progra…

题意:有n种病毒序列(字符串),一个模式串,问这个字符串包括几种病毒. 包括相反的病毒也算.字符串中[qx]表示有q个x字符.具体见案列. 0 < q <= 5,000,000尽然不会超,无解 3 2 AB DCB DACB 3 ABC CDE GHI ABCCDEFIHG 4 ABB ACDEE BBB FEEE A[2B]CD[4E]F   Sample Output 0 3 2 Hint In the second case in the sample input, the revers…

Problem's Link Mean: 有n个模式串和一篇文章,统计有多少模式串在文章中出现(正反统计两次). analyse: 好久没写AC自动机了,回顾一下AC自动机的知识. 本题在构造文章的时候需要仔细一点,其他没什么Trick,和普通AC自动机做法一样: build Trie  --->  build Fail_Ptr ---> matching_and_count Time complexity: O(N*L+M) Source code:  /* * this code is m…

F - Computer Virus on Planet Pandora Time Limit:2000MS     Memory Limit:128000KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 3695 Appoint description:  System Crawler  (2014-11-05) Description     Aliens on planet Pandora also write…

  Computer Virus on Planet Pandora Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 1353   Accepted: 256 Description Aliens on planet Pandora also write computer programs like us. Their programs only consist of capital letters (‘A’ to ‘Z’…

HDU-3695 Computer Virus on Planet Pandora 题意:电脑中病毒了, 现在n钟病毒指令, 然后有一个电脑指令, 看一下这个电脑指令中了几个病毒, 如果电脑种了某一个病毒, 那么就有子串是病毒指令, 或者 子串的反串是病毒指令, 现在问电脑指令一共感染了多少病毒. 题解:AC自动机,然后正向匹配一遍, 反向匹配一遍. 代码: #include<bits/stdc++.h> using namespace std; #define LL long long #d…

Description Aliens on planet Pandora also write computer programs like us. Their programs only consist of capital letters (‘A’ to ‘Z’) which they learned from the Earth. On planet Pandora, hackers make computer virus, so they also have anti-virus sof…