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representing the number of k in the query interval [l,r]If Opt=3 is Operation 3, then there are two numbers pos,k to change the number of POS positions to KIf Opt=4 is Operation 4, then there are three numbers l,r,k representing the precursor of k in the query interval [l,r]If the opt=5 is Operation 5, then there are three l,r,k to indicate the successor of K in the query interval [l,r].Output format:For the operation 1,2,4,5 each output row, indicating the query resultInput and Output Sample i

De Morgan Law Let learning Liunx's small partners around the headache, now I use the force of the primitive to straighten out this law for everyone.650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/85/E7/wKiom1etwHLSIrxXAAAskZ0cql4503.jpg "title=" de Morgan's law. jpg "alt=" wkiom1etwhlsirxxaaaskz0cql4503.jpg "/>As can be seen from the picture,A=4+3B=3+2Non-a=2+1Non-b=4+1A and b means that both A and B are in place, A and b are colored block

Llinxu Mandatory lock default is not open, want to let Linux support mandatory lock, not only when the mount is required to add-o mand, andThe files you want to lock are also required to set permissions.1. The proposed lock industry is called a cooperative lock, for this type of lock, the kernel knowledge provides the addition of lock and detect whether lock operation, but does not provide lock control andWork together, that is, if an application operates on a file, there is no detection of lock

Linux series of many operating systems are using MD5 encryption user password, encryption process is one-way, so to crack can only use brute force crack method.Below to share a program to crack the root user password.The program iterates through each password in the dictionary file, matches the password in the/etc/shadow, and returns success if the same.#!/usr/bin/env pythonImport CryptImport SysImport reDIC = [' Cookies ',' Test ',' Fuckyou ']Passwor

The command vim can start the VIM editor normally we use Vim in the form of a vim target file path if the target file exists, use VIM to open the file if the destination file does not exist, then create and open the file. Vim has three modes: 1, Command mode ESC2, Insert mode i3, ex mode : After Vim starts, it enters command mode by default, and any mode can be returned to command mode by pressing ESC. Common commands for Command mode are as follows: I insert text before the cursor o

This is my first shell Script, write chaos, experiment, or is available, and now on my own Web server running up!! ~~#!/bin/bash# this shellscript to prevent SSH brute force hack #auther:aaronguo#date:jan82016#version:1.2# Specifies the shell's log file logfile= "/var/log/blocked_ip" # gets the current time, used for grep/var/log/secure. (format: MMNBSP;DD NBSP;HH) timenow=$ (date ' +%b%e%h ') # if 20 connections fail within the current hour, record

Topic: Given a tree, each node has a color, many times asked the number of colors on a path, forcing onlinePositive solution is a block array, forcing the online Mo team will be tle to die, want to ac this problem don't lookIt's not hard to run a tree on the plain--but force onlineSo we can consider forcing the online Mo team algorithmDivide the tree into O (N^1/3) blocks, each block size O (N^2/3)Record the answers between each of the two pieces, the

A criminal Investigation Brigade has analyzed a mystery involving six suspects:(1) A, B at least one person committed the crime; (2) A, E, F Three have at least two persons involved in the crime, (3) A, D cannot be accomplices, (4) B, C or both, or is unrelated to the case, (5) C, D and only one person, (6) If D is not involved in the crime, then E may not participate in the crime. The brute force method is used to design an algorithm to find out the

Hand has a personality can not very good machine, want to dress a system a bit wasteful, but 4G memory is actually recognized only 3.7G, can not reach the minimum 4G limit of exsi, unable to install. Finally, a workaround is found that is validated for ESXi 6.0.Originated in: ESXi 5.x version prompts for insufficient memory resolution (5.5 forces more than 4G of memory)1. Insert the CD or U disk, start the installation, has been normal process to welcome screen, press ALT+F12. Login interface Ac

PermanentlyThe requested resource has been permanently moved to a new location, and any future references to this resource should use one of several URIs returned by this response307 Temporary RedirectThe requested resource is now temporarily responding to requests from different URIs. Because such redirects are temporary, the client should continue to send subsequent requests to the original addressAs we can see from the above, 301 jumps are permanent redirects, while 307 are temporary redirec

http://www.cyberciti.biz/faq/howto-linux-renew-dhcp-client-ip-address/' m using Ubuntu Linux. How to force Linux to reacquire a new IP address from the DHCP server? What's the command in Linux equivalent to Windows ' " ipconfig /renew command?You need to use the Dynamic Host Configuration Protocol Client i.e. dhclient command. The client normally doesn ' t release the current lease as it isn't required by the DHCP protocol. Some cable ISPs require the

Yesterday noon, the leader suddenly threw me a Linux server, let me configure a site Directory FTP servicePermissions can be uploaded, downloadable, so that they cannot jump to the parent directoryI think this simple ah, so I follow the fixed four-dimensional, useradd, passwd, modify conf file, modify permissions, and finally restartThe result is silly, has not been connected, reported 530 error, I was more stupid practice has been created, delete users--| |In Baidu struggling to find the answer

Perfmap is a front-end performance heat map that is used to analyze front-end performance and generate Web page resource loading based on resource timing APIs. The color of the heat map and the first millisecond value indicate when the image of the page is loaded, which is a good indicator of the user experience. The second value in parentheses is the time that the browser loads a particular image.GitHub Home Plugin DownloadRelated articles that may be of interest to you Web development in

Note: Open the following batch file, input you want to force chat number, press ENTER to start forced chat, the premise must open your QQ Copy Code code as follows: @Echo off @mode Con cols=55 lines=6 Echo Today is%date%, now Beijing time:%time% Title forced QQ Chat with others Color 4f Echo China Batch Alliance welcome you---www.mybat.cn Echo. Echo. Mplay32.exe/play/close C:\WINDOWS\Media\ringin.wav : Send set/p num= Please enter

We sometimes encounter situations where downloading a PDF file, if not processed, opens the PDF file directly in the browser, and then you need to save the download file by saving it. This article will be implemented through PHP to download the pdf file directly. Implementation principle: We only need to modify the page HTTP header, the Content-type set to Force-download, the problem can be solved. Please look at the code: Copy Code code as f

1, in the Alert_lxdb.log log report 600 errors Errors in FILE/U01/APP/ORACLE/ADMIN/LXDB/UDUMP/LXDB_ORA_50379.TRC: Ora-00600:internal error code, arguments: [Kkslhsh1], [101], [], [], [], [], [], [] Note that this problem may result in a very large TRC file and cause the file system to be full! 2, the root cause of the problem: Set the cursor_sharing = Force At present it seems that although the system does not have this setting, it is highly po

The previous article introduces the use of the Force assistant in the simulator, one-click installation Application tutorial, this article describes how to use the Force Assistant Management Simulator application: 1, after the installation of the application is still stored in your computer, you can follow the image shown in the following method to open: 2, each application has a separate folder, c

For each webmaster, in addition to the internal optimization of the site, outside the chain work has undoubtedly become a necessary means to upgrade our site rankings, especially for novice webmaster, many do not know SEO internal optimization, so the center of gravity Misting outside the chain of work above, so that the increase in the chain crazy to enhance the weight The weight of high ranking natural good. From here we can fully understand the importance of the chain. But for the outer chain

of the few people. Simplified in the industry there are various forms of expression, in addition to methodologies (for example, domain-driven development, object-oriented programming, design pattern decoupling), there are different forms and levels of abstraction (e.g., C programming language in assembly language, C + + programming language in C programming language, various software platforms and frameworks). Interestingly, these representations have brought greater complexity on the simplifi

The Web site contains more than just web pages, and sometimes you need to provide files that users can download. Putting your files on the server and attaching links to the pages is just the first step, and you also need to be aware that the HTTP response headers affect file downloads. This kind of situation is often encountered on the Internet, when downloading JPG or txt files, directly plus the file link, click and do not jump out of the choice to save pop-up box, but in the Web browser dire