The question ：
https://www.cnblogs.com/cjyyb/p/9065801.html
Answer key ：
[CF662C] Binary Table（FWT） More articles about
- 【CF662C】Binary Table（FWT）
[CF662C]Binary Table(FWT) Topic Luogu CF translate : There is one \(n*m\) Table for (\(n<=20,m<=10^5\)), There's one in each table \(0/1\), Every time ...
- Codeforces663E Binary Table（FWT）
subject Source http://codeforces.com/contest/663/problem/E Description You are given a table consisting o ...
- CF662C Binary Table （FWT Board questions ）
Reviewed one FWT, It's easy to find out ... There's no time to write , Just put on a blog :Great_Influence The blog of Pay attention to this sentence ans[i]=∑j⊗k=if[j]∗dp[k]ans[i]= ∑_{j⊗k=i} ...
- CF662C Binary Table【FWT】
CF662C Binary Table The question : Give a \(n\times m\) Of \(01\) matrix , You can reverse one row or one column at a time , After several reversals , At least how many \(1\) \(n\le 20, m\ ...
- CF662C Binary Table enumeration FWT
Topic Luogu topic ( Although Luogu has been a little slow lately ) Answer key It was observed that the data range of rows and columns varied widely , And there are only a few rows 20, Enumeration is fully supported , So we consider enumerating which rows flip . For the first i Column , We'll take what it represents 01 String extraction , Expressed as \( ...
- [CF662C Binary Table][ Pressure +FWT]
CF662C Binary Table Together FWT The board of - It's hard to think about it There is one \(n\) That's ok \(m\) List of tables , Every element is \(0/1\), Each operation can select a row or a column , hold \(0/1\) ...
- MySQL-- When mysqldump --single-transaction encounter alter table（1）
Part of the production environment uses mysqldump --single-transaction Backup the database at night , And my colleague happened to execute alter table operation , The operation partially succeeded and partially failed , Why? ? ##=== ...
- 【CF850E】Random Elections（FWT）
[CF850E]Random Elections(FWT) Topic Luogu CF Answer key Understand the problem is a problem ... Obviously three people are equivalent , So just think about one person winning the other two . So in the process of winning the other two ...
- 「WC2018」 State division （FWT）
「WC2018」 State division (FWT) I went to get an upgraded blog theme , It's much better than before . thank @Wider But if I have a reading mode, I don't know why \(\text{LATEX}\) Out-of-service , So I deleted this function . ...
Random recommendation
- HTML Event properties _03
Global event properties HTML 4 One of the new features of can make HTML Event triggers behavior in the browser , For example, when a user clicks on a HTML Element to start a segment JavaScript. If you want to learn more about event attributes , Please visit Jav ...
- sudo Configuration temporary get root jurisdiction
Ordinary users in the system sometimes need root Permission to perform an operation , If used su - root You have to know root Password , It's not safe , So there is sudo,root It can be done to /etc/sudoers Do a certain configuration , Let ordinary users ...
- IOS in frame And bounds The difference between
Article summary :http://www.sendong.com/news1733.html bounds It means this view The coordinates and sizes in its own coordinate system and frame It means this view In it superview The coordinate system of ...
- multipathd dead but pid file exists
structure RAC Errors in the environment Baidu has not found a solution for a long time ,Google For a moment , Finally, a feasible solution was found Solution:- yum update device-mapper glibc -y [root@HE2 ...
- Reprint ~shell brief introduction
Shell Itself is a function of C A program written in a language , It is used by users Unix/Linux The bridge , Most of the work of users is done through Shell Accomplished .Shell It's a command language , Another programming language . As a command language , It explains interactively ...
- eclipse in project facet problem
It usually appears elsewhere import On the project , Only the project folder has a Red Cross , Everything else is normal , Now, I'd like to summarize my personal solutions : There are several possibilities : 1, Whether the encoding settings are consistent , That is, the original code of your project and now eclipse Is the default encoding used ...
- ReentrantLock Source code
ReentrantLock And Synchronized The difference is that the latter is JVM Realization , The former is JDK Realization , Belong to Java object , When using it, there must be a clear lock (Lock) And unlock (Release) Method , Otherwise, it may cause deadlock ...
- The illustration HTTP Chapter six
HTTP message 1>HTTP message 2>HTTP Request message In the request ,HTTP Message by method .URI.HTTP edition .HTTP Header field . Message body ( Not necessarily ) And so on . 3>HTT ...
- spark in RDD Transformation operation and action operation of
This article is mainly about spark in RDD Basic operation of .RDD yes spark Unique data model , talk about RDD We'll talk about elastic distributed data sets , What directed acyclic graph , This article will not expand these profound concepts for the time being , While reading this article , You can just RDD When ...
- wpf Control to add a background picture
Method 1 ,xaml in : < Control > < Control .Background> <ImageBrush ImageSource="/WpfApplication1;compon ...