D. Data Center Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/560/problem/B Description The startup "Booble" has shown explosive growth and now it needs a new data center with the capacity of m petabytes. Booble can b…

A. Nano alarm-clocks Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100637/problem/A Description An old watchmaker has n stopped nano alarm-clocks numbered with integers from 1 to n. Nano alarm-clocks count time in hours, and…

A. Nano alarm-clocks Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100637/problem/A Description An old watchmaker has n stopped nano alarm-clocks numbered with integers from 1 to n. Nano alarm-clocks count time in hours, and…

Codeforces Round #296 (Div. 1)C. Data Center Drama Time Limit: 2 Sec  Memory Limit: 256 MBSubmit: xxx  Solved: 2xx 题目连接 http://codeforces.com/contest/528/problem/C Description The project of a data center of a Big Software Company consists of n compu…

E. Data Center Maintenance time limit per test 1 second memory limit per test 512 megabytes input standard input output standard output BigData Inc. is a corporation that has n data centers indexed from 1 to n that are located all over the world. The…

 2017 JUST Programming Contest 2.0 题目链接:Codeforces gym 101343 J.Husam and the Broken Present 2 J. Husam and the Broken Present 2 time limit per test:1.0 s memory limit per test:256 MB input:standard input output:standard output After you helped Husam…

Problem H. Hell on the MarketsTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=86821#problem/H Description Most financial institutions had become insolvent during financial crisis and went bankrupt or…

CodeForces 816B Karen and Coffee(前缀和,大量查询) Description Karen, a coffee aficionado, wants to know the optimal temperature for brewing the perfect cup of coffee. Indeed, she has spent some time reading several recipe books, including the universally ac…

基础架构 拓扑图 Switching Path L3 routing at aggregation layer L2 switching at access layer L3 switch融合了三种功能: RP, router processor, 处理路由协议 SP, switch processor, 处理L2协议 ASIC, Application-specific integrated circuit专用集成电路,用于重写header的 对于traffic forwarding有几种方法…

有个安全性有下面几种概念: Threat:威胁 Vulnerability: 安全隐患 Attack: 攻击 有关Threat 常见的威胁有下面几种 DoS(Denial of Service拒绝服务攻击) Breach of confidential information 破解机密信息 Data theft or alteration 数据盗用和篡改 Unauthorized use of compute resources 未授权访问 Identity theft 身份盗用 有关安全隐患…