1001: [BeiJing2006]The wolf grabbed the rabbit
Time Limit: 15 Sec Memory Limit: 162 MBSubmit: 28885 Solved: 7540[Submit][Status][Discuss]
Description
Now the children’s favorite “Pleasant Goat and Grey Wolf” is that Grey Wolf can’t catch sheep, but it’s better to catch rabbits.
And now the rabbits are stupid. They have only two nests. Now, as the wolf king, you face a grid of terrain below.
The upper left corner is (1,1), and the lower right corner is (N, M) (N=4, M=5 above). There are three types of roads.
1:(x,y)<==>(x+1,y)
2:(x,y)<==&g...
It’s August 31, 2018.
Recently, I saw a friend built a GitHub.EverydaySportRepo and his own fitness card for two years, so he made up his mind to exercise well and lose weight.
objective
The coach said 1 kilograms of fat, but 7000kcal. So I don’t expect to lose too fast. According to the coach’s advice, the goal isThree months, thin 6kg。that is2018November 31st 2013Weight to achieve59.8kg。
Because I always don’t insist on doing things, so I don’t know if this is a flag Bo.
Because clusters are not interworking, manual migration is adopted.
1、Download target cluster data
hadoop fs -get /apps/hbase/data/data/default/*c4be21d3000064c0 /mnt/data
2、Remote replication of data, you can compress it.
scp ***
3、Uploading data to HDFS must switch to HBase users, otherwise there will be errors.
su hdfs
hadoop fs -put /app/hbase/* /apps/hbase/data/data/default/
4、Restore metadata, etc.
hbase hbck Only do a checkupHBase HBCK-fixMeta Generate the meta table according to the.Regioninfo in the region directory.HBase HBCK-fixAssignments Assign the region recor...
ARCUsed in conjunction with non ARC in a project.
1，Select the Targets in the project and select the Target you want to operate.2，Select Build Phases, double-click the file that requires ARC in Complie Sources, and enter: – fobjc – arc in the input box, and – fno – objc – arc if you don’t want ARC
There is no problem with mixing. It doesn’t matter if ARC code continues to insist on who will apply for release. Previous libraries did not have time to rewrite.
And I don’t know what third-party code you’re using. Generally speaking, there...
802.11b/gOr 802.11b/g/n generally supports 13 channels.
Channel is also called channel, frequency band, is a wireless signal (electromagnetic wave) as the transmission carrier of data signal transmission channel. Wireless networks (routers, AP hotspots, and computer wireless network cards) can run on multiple channels. All kinds of wireless network devices should be completed within the coverage of wireless signals.We use different channels to avoid interference between signals. Channel partition of 2.4GHz (=2400MHz) frequency band. There are actually 14 channels (Fourteenth channels are show...
This version is based on spring cloud.Finchley.RELEASE） spring boot ( 2.0.4.RELEASE )
Crater 1:spring cloud starts from 2.0., and the dependency packet that needs to be introduced will change. The biggest feature is spring-cloud-starter-.netflix,Many dependent components have more than one Netflix when configuring Maven.Not before.）
Tramp Pit 2: if the version of spring cloud does not match the version of the dependent component, it will go wrong directly. Maven dependency is generally not found in the corresponding jar package.
ps ： If you do not determine the version number correspon...
Evolution of database architecture
In the era of less business data, we can use a single-machine database to meet the business use. With more and more business requests, the amount of data in the database increases rapidly. At this time, the single-machine database can no longer meet the performance requirements of the business, and the database master-slave replication architecture comes into being.
Master-slave replication separates the write operation from the read operation of the database, uses multiple slaver replication to process the read request, Master to process the write reques...
The following demo introduces the use of reflection mechanism to read notes.
First, custom annotations, one to annotate classes, and another to annotate properties, such as the following demo
package Annotation;
import java.lang.annotation.ElementType;import java.lang.annotation.Retention;import java.lang.annotation.RetentionPolicy;import java.lang.annotation.Target;
public class TestAnn { @Target(value= {ElementType.TYPE }) @Retention(RetentionPolicy.RUNTIME) public @interface ann{//Used to convert class names to table names. String value();} @Target(value= {ElementType.FIELD }) ...
