可以发现,如果一个整体一起考虑是不能找到一个合适的状态来描述这个情形的. 因此可以考虑寻找整体的反面,也就是将每个维度分开考虑. 不难发现每个维度本质上是一样的,因此不需要考虑不同维度之间的区别. 那么对于每个维度而言,它必须从 \(0\) 出发再回到 \(0\),那么假设它往外走了 \(k\) 步,那么往内也必然走了 \(k\) 步. 不难发现每个维度本质上是在总共的 \(T\) 步中选择了 \(k\) 个位置在这个维度上往外走,再选择 \(k\) 个位置往内走,于是就可以直接考虑 \(dp\…

0x00 样本说明 分析样本是被0b500d25f645c0b25532c1e3c9741667的样本感染得到.感染前的文件是Tcpview.exe,一款windows网络连接查看工具. 感染前后文件对比图示如下: 感染前 感染后 文件大小 106496 字节 818688 字节 文件md5 4B6B70F4A199CF3EAC1554B08804BC4F 041D85ECABF5F2E8366C5E0FDCB705F3 文件图标     分析样本的报毒情况如下: 杀软类型 病毒名 nod32…

http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1394 1394: Virus Replication Time Limit: 1 Sec  Memory Limit: 128 MBSubmit: 135  Solved: 40[Submit][Status][Web Board] Description Input Output Sample Input AAAAA AGCGAA Sample Output 3 HINT Source 分析:…

最近在个只可往他里面发邮件,不能往外上任何互联网的地方工作,用 sublimetext 要装个sublime 插件 jsformat 十分麻烦.用gmail邮箱发总是报病毒. 最后挨个尝试,发现是 jsbeautify 文件夹里的 两个 test 文件夹含有被邮件系统识别为病毒的东西.且在的这家公司我估计和 gmail 的邮箱识别机制相同. 前两天就试了用 qq 邮箱发送,但是qq邮箱并不会拦截和识别为病毒邮件,看来 qq 邮箱还有待提高. Google 了一下未果, Gmail thinks…

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…

由于 使用了 简单游 平台上的挂机工具: 番茄-自动人机对战免费版1217  ,使用了很久,头段时间家里电脑 360提示有病毒,本来我一直忽略的,但 我扫描了一下,大量的这个木马,于是 吧 简单游卸载了,全盘扫描,杀毒,修复了许多文件.许多文件被感染,文件大小都变了,还好 360 可以修复感染文件. 这一次,我是用公司电脑,再次 尝试使用 简单游 的挂机工具,没想到 依旧 是这个病毒 virus.win32.ramnit.B ,又是感染了大量的文件.360 居然没有提醒,还好 我清理电脑垃圾 顺…

传送门: Detect the Virus                                                                                                                                                                                                                                     …

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…

The history of computer virus is the same as computer history. With more and more powerful computers, virus also are smarter and harder to be detected and killed. They have big impact on data security and system usability. We introduce 10 notorious c…

Detect the Virus Time Limit: 2 Seconds      Memory Limit: 65536 KB One day, Nobita found that his computer is extremely slow. After several hours' work, he finally found that it was a virus that made his poor computer slow and the virus was activated…

题目大意:给你一些病毒的特征码,然后再给一些文本,判断每个文本有多少种病毒,不过给的字符串都是加密处理过的,给的每个字符串都有对应一个64以内的一个数(题目里面那个表就是),然后可以把这个64以内的这个数化成6位的二进制数,然后把这些二进制数每8位再化成一个字符,这就是原来的字符,比如 QA== ->编号0 1->二进制010000 000000->每8位变成一个字符 01000000 0000(后面这4个0就是那两个==,可以舍去)-> 64('@').   分析:因为是化成8位…

Multiple outputs from T4 made easy – revisited » DamienG Multiple outputs from T4 made easy – revisited…

virus.win32.parite.H病毒的查杀方法 昨天电脑中了virus.win32.parite.H病毒,搞了2个多小时最终搞定了.以下记录下我的解决方法. 第一步:下载Win32.Parite病毒专杀工具 下载地址:http://download.csdn.net/detail/wuxiaokaixinguo/6333233 第二步:执行流行病毒专杀工具(Spant).exe 急系统急救箱进行系统修复(建议等流行病毒专杀工具(Spant).exe 急系统急救箱进行系统修复) 系统急救箱…

virus.win32.parite.H病毒的查杀方法 昨天电脑中了virus.win32.parite.H病毒,搞了2个多小时最终搞定了.以下记录下我的解决方法. 第一步:下载Win32.Parite病毒专杀工具 下载地址:http://download.csdn.net/detail/wuxiaokaixinguo/6333233 第二步:执行流行病毒专杀工具(Spant).exe watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3V4aWFva2…

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…

UVA 10537 - The Toll! Revisited option=com_onlinejudge&Itemid=8&page=show_problem&category=550&problem=1478&mosmsg=Submission+received+with+ID+14135315" target="_blank" style="">题目链接 题意:给定一个无向图,大写字母是城市,小写字母是…

difkstra + 路径输出 The Toll! Revisited Time Limit: 3000MS Memory Limit: Unknown 64bit IO Format: %lld & %llu [Submit]   [Go Back]   [Status] Description Problem G Toll! Revisited Input: Standard Input Output: Standard Output Time Limit: 1 Second Sindbad…

1355. Bald Spot Revisited Time limit: 1.0 secondMemory limit: 64 MB A student dreamt that he walked along the town where there were lots of pubs. He drank a mug of ale in each pub. All the pubs were numbered with positive integers and one could pass…

A virus is spreading rapidly, and your task is to quarantine the infected area by installing walls. The world is modeled as a 2-D array of cells, where 0 represents uninfected cells, and 1 represents cells contaminated with the virus. A wall (and onl…

A virus is spreading rapidly, and your task is to quarantine the infected area by installing walls. The world is modeled as a 2-D array of cells, where 0represents uninfected cells, and 1 represents cells contaminated with the virus. A wall (and only…

翻译 | Placing Search in Context The Concept Revisited 原文 摘要 [1] Keyword-based search engines are in widespread use today as a popular means for Web-based information retrieval. [2] Although such systems seem deceptively simple, a considerable amount o…

For the next couple months we're going to revisit Build 2017, each post focusing on different aspects and technologies presented. Not every session will be listed, just a select set, hopefully enough to wet your appetite. All the on-demand sessions c…

[CSAcademy]Virus on a Tree 题目大意: 给你一棵\(n(n\le10^5)\)个点的树,一开始点\(1\)有病毒,可以沿着边扩散.你可以事先切掉若干条边,使得病毒扩散不超过\(k\)个结点.告诉你哪些边可以切,问最少需要切掉多少条边. 思路: 从\(1\)开始DFS,碰到一条可以切的边就返回.将得到的边按照子树大小排序,把能加上的边都加回去. 源代码: #include<queue> #include<cstdio> #include<cctype&…

[CC-CMPVIRS]Computer Virus 题目大意: 有一张纸带,从左到右被分成了\(n(n\le10^7)\)个格子,在刚开始,第\(i\)个格子上写着数字\(i\).这张纸带被分成了从左到右的连续的\(m(m\le10^3)\)段,编号较小的段在编号较大的段的左边,且每一个格子都被分给了其中的一段.第\(i\)段有\(d_i\)个格子. 另外,编号较大的段的格子数不小于编号较小的段,即\(d_i\le d_{i+1}\). 刚开始所有格子都是白色的,现在重复以下操作,直到所有格子…

Detect the Virus Time Limit: 2 Seconds      Memory Limit: 65536 KB One day, Nobita found that his computer is extremely slow. After several hours' work, he finally found that it was a virus that made his poor computer slow and the virus was activated…

原文地址:http://i.cnblogs.com/EditPosts.aspx?opt=1. I wrote a first version of this posting on consistency models about a year ago, but I was never happy with it as it was written in haste and the topic is important enough to receive a more thorough trea…

  Virus  We have a log file, which is a sequence of recorded events. Naturally, the timestamps are strictly increasing. However, it is infected by a virus, so random records are inserted (but the order of original events is preserved). The backup log…

4044: [Cerc2014] Virus synthesis Time Limit: 20 Sec  Memory Limit: 128 MB Description Viruses are usually bad for your health. How about fighting them with... other viruses? In  this problem, you need to find out how to synthesize such good viruses. …