Xenia the beginner mathematician is a third year student at elementary school. She is now learning the addition operation.
The teacher has written down the sum of multiple numbers. Pupils should ca...
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其他好文 时间：
2014-07-22 23:05:53
阅读次数：
382
The circle line of the Berland subway has n stations. We know the distances between all pairs of neighboring stations:
d1 is
the distance between the 1-st and the 2-nd
station;
d2 is
the d...
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其他好文 时间：
2014-07-22 23:05:14
阅读次数：
302
在ADO.NET对象模型中，Connection对象代表了与数据源之间的连接。
.NET框架中有两个Connection对象：一个是OleDbConnection,用于大多数的数据库连接，一个是SqlConnection，是MS开发的专门用于针对SQLServer的连接。在创建Connection对象之前，你必须先引用System.Data.OleDb或者System.Data.SqlC...
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数据库 时间：
2014-07-22 23:04:14
阅读次数：
412
Problem D
Predator II
Time limit: 2 seconds
Oh No!!! The predator has entered the room again. But this time it is a different kind of room.
The room is a square of size 1000...
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其他好文 时间：
2014-07-22 23:03:13
阅读次数：
358
安装ccs_setup_5.1.1.00028.exe后（无论是自己装eclipse还是在原来的基础上安装eclipse的插件），ccs5的应用无法打开，错误为：An
error has occurred.See the log file .\workspace\.metadata\.log.本现象...
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其他好文 时间：
2014-05-01 20:57:36
阅读次数：
888
Problem DescriptionIgnatius has just come back
school from the 30th ACM/ICPC. Now he has a lot of homework to do. Every teacher
gives him a deadline o...
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其他好文 时间：
2014-05-01 20:49:40
阅读次数：
563
1D people lived in a 1D country. Everything in the country was one-dimensional, and everything was simple and clear: just one axis and two directions — forward and backward. Even a 1D world has proble...
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其他好文 时间：
2014-04-29 13:44:22
阅读次数：
284
jdbc驱动到官网下载，放在jdk的相关目录下面，或者jar文件加入到工程下面
package test_mysql;
import java.sql.*;
import java.util.Set;
public class testjdbc {
public static Connection getConnection() throws ClassNotFoundException, S...
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数据库 时间：
2014-04-29 13:22:20
阅读次数：
428
The blonde Angela has a new whim: internet chats. Of course, as any blonde, she writes her messages using the upper case. You are the moderator of Angela's favorite chat and you're fed up with her upp...
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其他好文 时间：
2014-04-29 13:17:21
阅读次数：
293
FAILED: Error in metadata: java.lang.RuntimeException: MetaException(message:org.apache.hadoop.hive.serde2.SerDeException org.apache.hadoop.hive.hbase.HBaseSerDe: columns has 3 elements while hbase.columns.mapping has 4 elements (counting the key if implic...
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其他好文 时间：
2014-04-29 13:17:21
阅读次数：
387
