1011. World Cup Betting (20) 时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue With the 2010 FIFA World Cup running, football fans the world over were becoming increasingly excited as the best players from the best teams doing battl…

1006. Sign In and Sign Out (25) 时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue At the beginning of every day, the first person who signs in the computer room will unlock the door, and the last one who signs out will lock the door…

1041. Be Unique (20) 时间限制 100 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue Being unique is so important to people on Mars that even their lottery is designed in a unique way. The rule of winning is simple: one bets on a number chosen fr…

1046. Shortest Distance (20) 时间限制 100 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue The task is really simple: given N exits on a highway which forms a simple cycle, you are supposed to tell the shortest distance between any pair of exit…

1008. Elevator (20) 时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue The highest building in our city has only one elevator. A request list is made up with N positive numbers. The numbers denote at which floors the elevator will st…

1048. Find Coins (25) 时间限制 50 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue Eva loves to collect coins from all over the universe, including some other planets like Mars. One day she visited a universal shopping mall which could accept a…

1032. Sharing (25) 时间限制 100 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue To store English words, one method is to use linked lists and store a word letter by letter. To save some space, we may let the words share the same sublist if the…

1029. Median (25) 时间限制 1000 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue Given an increasing sequence S of N integers, the median is the number at the middle position. For example, the median of S1={11, 12, 13, 14} is 12, and the median…

1009. Product of Polynomials (25) 时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue This time, you are supposed to find A*B where A and B are two polynomials. Input Specification: Each input file contains one test case. Each case oc…

xdg-open 命令可以用来在Ubuntu下快速打开各类文件. 下面是从 manual 文档里截取的内容: 可以知道,该命令的功能是在图形界面下按照用户的平时习惯打开各类文件,甚至是链接. 这样,我们就可以方便的在命令行窗口打开各类文件而不用再做繁琐的鼠标点击了. Ubuntu使用愉快. 版权声明:本文为博主原创文章,未经博主允许不得转载.…

1002. A+B for Polynomials (25) 时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue This time, you are supposed to find A+B where A and B are two polynomials. Input Each input file contains one test case. Each case occupies 2 lines, an…

1011 World Cup Betting (20)(20 分)提问 With the 2010 FIFA World Cup running, football fans the world over were becoming increasingly excited as the best players from the best teams doing battles for the World Cup trophy in South Africa. Similarly, footb…

1011 World Cup Betting (20)(20 分) With the 2010 FIFA World Cup running, football fans the world over were becoming increasingly excited as the best players from the best teams doing battles for the World Cup trophy in South Africa. Similarly, footbal…

1011 World Cup Betting (20)(20 分) With the 2010 FIFA World Cup running, football fans the world over were becoming increasingly excited as the best players from the best teams doing battles for the World Cup trophy in South Africa. Similarly, footbal…

With the 2010 FIFA World Cup running, football fans the world over were becoming increasingly excited as the best players from the best teams doing battles for the World Cup trophy in South Africa. Similarly, football betting fans were putting their…

1005. Spell It Right (20) 时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue Given a non-negative integer N, your task is to compute the sum of all the digits of N, and output every digit of the sum in English. Input Specification: E…

1001. A+B Format (20) 时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue Calculate a + b and output the sum in standard format -- that is, the digits must be separated into groups of three by commas (unless there are less than four d…

1007. Maximum Subsequence Sum (25) 时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue Given a sequence of K integers { N1, N2, ..., NK }. A continuous subsequence is defined to be { Ni, Ni+1, ..., Nj} where 1 <= i <= j <= K. The …

1012. The Best Rank (25) 时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue To evaluate the performance of our first year CS majored students, we consider their grades of three courses only: C - C Programming Language, M - Mathematic…

Currency Exchange Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 22180 Accepted: 8015 Description Several currency exchange points are working in our city. Let us suppose that each point specializes in two particular currencies and perfor…

Self Numbers Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 22101   Accepted: 12429 Description In 1949 the Indian mathematician D.R. Kaprekar discovered a class of numbers called self-numbers. For any positive integer n, define d(n) to…

如果愿意在Linux环境方面花费些时间,首先就应该知道日志文件的所在位置以及它们包含的内容.在系统运行正常的情况下学习了解这些不同的日志文件有助于你在遇到紧急情况时从容找出问题并加以解决. 以下介绍的是20个位于/var/log/ 目录之下的日志文件.其中一些只有特定版本采用,如dpkg.log只能在基于Debian的系统中看到. /var/log/messages - 包括整体系统信息,其中也包含系统启动期间的日志.此外,mail,cron,daemon,kern和auth等内容也记录在var…

youtube下载神器:https://github.com/rg3/youtube-dl 我擦咧 vim插件:https://github.com/Valloric/YouCompleteMe vim插件配置:https://github.com/spf13/spf13-vim ----------------Mac完整项目---------- 电台:https://github.com/myoula/sostart 豆瓣FM:https://github.com/turingou/douba…

B. Sagheer, the Hausmeister time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Some people leave the lights at their workplaces on when they leave that is a waste of resources. As a hausmeiste…

UIView 视图类,视图都是UIView或者UIView子类 UIWindow 窗口类,用于展示视图,视图一定要添加window才能显示 注意:一般来说,一个应用只有一个window 创建一个UIWindow对象 UIScreen 屏幕类 [UIScreen mainScreen]主屏幕 [[UIScreen mainScreen]bounds]获得主屏幕大小 如: 1.创建工程 2.把ARC改为MRC 3.window的属性由string改为retain 4.重写dealloc方法,对_wi…

1.Foundation框架中提供了很多的集合类如:NSArray,NSMutableArray,NSSet,NSMutableSet,NSDictionary,NSMutableDictionary但是这些类只能存放OC对象类型的数据 2.如果要存放基本数据类型,必须先将基本暑假类型包装成对象类型然后再用集合类进行存储,OC中提供的包装类是NSNumber,NSValue.其中NSNumber继承于NSValue. 3.NSNumber主要针对于基本数据类型的包装,NSValue主要针对结构体…

Free Kick Time Limit: 2 Seconds      Memory Limit: 65536 KB In a soccer game, a direct free kick is also awarded to the opposing team if a player commits any of the offences. A direct free kick in an immediate distance is a nightmare of the goalie. I…

1.  在多重循环中,如果有可能,应当将最长的循环放在最内层,最短的循环放在最外层,以减少 CPU 跨切循环层的次数. 2.  如果循环体内存在逻辑判断,并且循环次数很大,宜将逻辑判断移到循环体的外面. 3.  即使程序真的不需要default 处理,也应该保留语句 default : break. 4.  C 语言用#define 来定义常量(称为宏常量). C++ 语言除了 #define 外还可以用 const 来定义常量(称为 const 常量). 5.  const 与 #define…

hadoop集群性能低下的常见原因 (一)硬件环境 1.CPU/内存不足,或未充分利用 2.网络原因 3.磁盘原因 (二)map任务原因 1.输入文件中小文件过多,导致多次启动和停止JVM进程.可以设置JVM重用. 2.数据倾斜:大文件且不可分割,导致处理这些文件的map需要很长时间. 3.数据本地化效果差. (三)reduce任务的原因 1.reduce任务数量过大或过小 2.数据倾斜:一部分key的记录数量太大,导致某些reduce执行过慢 3.缓慢的shuffle和排序 (四)hadoop…

转自:http://www.ibm.com/developerworks/cn/data/library/techarticles/dm-0602zhoudp/ 引言 传统的数据整合方式需要大量的手工编码,而采用 IBM WebSphere DataStage 进行数据整合可以大大的减少手工编码的数量,而且更加容易维护.数据整合的核心内容是从数据源中抽取数据,然后对这些数据进行转化,最终加载的目标数据库或者数据仓库中去,这也就是我们通常所说的ETL过程.IBM WebSphere DataSta…