One day Dima and Alex had an argument about the price and quality of laptops. Dima thinks that the more expensive a laptop is, the better it is. Alex disagrees. Alex thinks that there are two laptops, such that the price of the first laptop is less (…

D - A Lot of Games CF#260 Div2 D题 CF#260 Div1 B题 Codeforces Round #260 CF455B D. A Lot of Games time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Andrew, Fedor and Alex are inventive guys. No…

http://codeforces.com/contest/456/problem/B CF#260 div2 B Fedya and Maths Codeforces Round #260 B. Fedya and Maths time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Fedya studies in a gymnasi…

Boredom CF#260 div2 C. Boredom Codeforces Round #260 C. Boredom time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Alex doesn't like boredom. That's why whenever he gets bored, he comes up wit…

题目链接:http://codeforces.com/contest/456/problem/A 解题报告:有n种电脑,给出每台电脑的价格和质量,要你判断出有没有一种电脑的价格小于另一种电脑但质量却大于另一台电脑的情况. 把输入排个序就可以了,但是我比赛的时候排序只是按照价格排序了,锁定代码之后发现了这个错误,但已经改不了了,但是最后居然AC了,说明CF的数据也是有问题的. #include<cstdio> #include<cstring> #include<iostrea…

A. Laptops time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output One day Dima and Alex had an argument about the price and quality of laptops. Dima thinks that the more expensive a laptop is, the…

[codeforces 260]B. Ancient Prophesy 试题描述 A recently found Ancient Prophesy is believed to contain the exact Apocalypse date. The prophesy is a string that only consists of digits and characters "-". We'll say that some date is mentioned in the P…

知识太全面了,摘抄摘不完,还是粘过来加上注释和笔记吧. 重点以及断句用加粗,注释用红括号. 一.CF卡技术及规格 一.CF卡技术及规格 1.CF卡简史 随着数码产品的高速普及,近年来闪存卡也进入了高速发展时期,得到了越来越广泛的应用,相机.手机.掌上电脑.随身听上处处都可能用到闪存卡.闪存卡有很多种类,常见的有CF卡.SD卡.MMC卡.记忆棒.SM卡.xD卡等,其中CF卡已经有了相当长的历史,由于其建立标准的时间长.兼容性好.容量大.价格低等原因而得到了广泛的应用,是通用性 最强的存储卡之一.…

凌晨收到同事电话,反馈应用程序访问Oracle数据库时报错,当时现场现象确认: 1. 应用程序访问不了数据库,使用SQL Developer测试发现访问不了数据库.报ORA-12570 TNS:packet reader failure 2. 使用lsnrctl status检查监听,一直没有响应,这个是极少见的情况. 3. 检查数据库状态为OPEN,使用nmon检查系统资源.如下一张截图所示,CPU利用率不高,但是CPU Wait%非常高.这意味着I/O不正常.可能出现了IO等待和争用(IO…

A. Laptops 题目意思: 给定n台电脑,第i台电脑的价格是ai ,质量是bi ,问是否存在一台电脑价格比某台电脑价格底,但质量确比某台电脑的质量高,即是否存在ai < aj 且 bi > bj ? 解题思路: 这题一定要看题目,a都是1~n的不同数,b也是1~n的不同数,此题只需要判断ai 是否等于bi ,如果ai != bi 的话,则输出“Happy Alex”,如果所有的ai  == bi 则输出“Poor Alex” 证明:先将a按照从小到大排序,当i<j时ai <…