Agri-Net Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 56948   Accepted: 23615 Description Farmer John has been elected mayor of his town! One of his campaign promises was to bring internet connectivity to all farms in the area. He nee…

VisualSVN Server可以用WMI接口管理(Windows Management Instrumentation). VisualSVN Server安装的计算机中,位于%VISUALSVN_SERVER%\WMI下的MOF文件描述了该接口.可以用C#代码控制管理VisualSVN Server. 我机器VisualSVN安装在D盘,MOF文件存在位置:D:\Program Files\VisualSVN Server\WMI\VisualSVNServer.mof 下面一些代码供参考…

DZY Loves Chemistry time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output DZY loves chemistry, and he enjoys mixing chemicals. DZY has n chemicals, and m pairs of them will react. He wants to pou…

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…

一.规划 (一)硬件资源 10.171.29.191 master 10.173.54.84  slave1 10.171.114.223 slave2 (二)基本资料 用户:  jediael 目录:/opt/jediael/ 二.环境配置 (一)统一用户名密码,并为jediael赋予执行所有命令的权限 #passwd # useradd jediael # passwd jediael # vi /etc/sudoers 增加以下一行: jediael ALL=(ALL) ALL (二)创建…

Pie Time Limit: 5000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 109 Accepted Submission(s): 52   Problem Description My birthday is coming up and traditionally I'm serving pie. Not just one pie, no, I have a…

A Knight’s Journey Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 34085 Accepted: 11621 Description Background The knight is getting bored of seeing the same black and white squares again and again and has decided to make a journey around…

目录 1. 条款与条件 2. 功能 3. 元数据.评级与排名 4. 位置 5. 推送通知 6. 游戏中心 7. 广告 8. 商标与商业外观 9. 媒体内容 10. 用户界面 11. 购买与货币 12. 抓取与聚合 13. 设备损害 14. 人身攻击 15. 暴力 16. 令人反感的 17. 隐私 18. 色情 19. 宗教.文化与种族 20. 竞赛.赌金.抽奖以及奖券 21. 慈善与援助 22. 法律要件 1. 条款和条件 1.1 为App Store开发程序,开发者必须遵守程序许可协议(PLA…

A. Karen and Morning time limit per test 2 seconds memory limit per test 512 megabytes input standard input output standard output Karen is getting ready for a new school day! It is currently hh:mm, given in a 24-hour format. As you know, Karen loves…

1.Shell$ExitCodeException 现象:运行hadoop job时出现如下异常: 14/07/09 14:42:50 INFO mapreduce.Job: Task Id : attempt_1404886826875_0007_m_000000_1, Status : FAILED Exception from container-launch: org.apache.hadoop.util.Shell$ExitCodeException:  org.apache.hado…