solution family sets of

Design of A Basic Computer Model With Stack Function

This post introduces how to design a basic computer model which can achieve commmon stack functions. ......
Computer Function Design Basic Model

Two Types of Spells

贪心题,先假设全部都是w[i],然后你发现最多可以放电之咒个数的两倍,贪心加上这么多w[i](从大到小),但是你发现不能全是电之咒。 后面的限制不好用数据结构维护,考虑让数据结构维护的东西天然满足这个限制,那么直接删去一个电之咒然后选就行了。 那么肯定删去最小的电之咒。 维护的东西有: \[\sum ......
Spells Types Two of

完蛋!我被 Out of Memory 包围了!

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Memory Out of

[翻译]——How the MySQL Optimizer Calculates the Cost of a Query (Doc ID 1327497.1)

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Calculates 1327497.1 the Optimizer 1327497

XXII Open Cup named after E.V. Pankratiev, Grand Prix of Daejeon 部分题解

省流:A、B、C、E、H、K、L。 D 和 I 之后可能会看心情补,剩下的题大概这辈子都不会做了。 A. Points 有两个由二维平面上的点组成的可重点集 \(U,V\)。如下定义 \(D(U,V)\): 当 \(U,V\) 中存在一个为空时,\(D(U,V) = -1\)。 否则 \(D(U,V ......
题解 Pankratiev Daejeon 部分 Grand

并查集(Union Find Set)

1 基本介绍 并查集是一种用来判断两个元素之间是否有关系的集合。 它的基本思想为:对于两个元素,如果他们之间有关系,则将其连接,以此形成一颗树。 对于任意两个节点,如果它们有相同的根节点,则它们之间有关系。 2. 建立步骤 给定n个点,以及m个关系。 1. 初始状态 将每个节点的根节点都指向自己 f ......
Union Find Set

报错:bucketId out of range: -1 (state=,code=0)

一、背景 datax同步postgre库表数据到hive表,同步完成后select报错 java.io.IOException: java.lang.IllegalArgumentException: Bucket ID out of range: -1 二、代码 1.hive 建表语句 creat ......
bucketId range state code out

查询列表时参数有限制提示The server supports a maximum of 2100 parameters.

1 public ActionResult Export(SAPPRItemSearchVM searchvm) 2 { 3 searchvm.SetFilter(MyPRItemReader, this.GetWorkingUser(true)); 4 5 IList<SAPPRItemDTO> ......
parameters supports 参数 maximum server

How to prevent salinization of land

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salinization prevent land How to

P9821 [ICPC2020 Shanghai R] Sum of Log

原题链接 题意,求: \[\sum_{i=0}^{X}\sum_{j=[i=0]}^{Y}[i\&j=0]\lfloor\log_2(i+j)+1\rfloor \]为简洁,记 \(\lg(x)=\lfloor\log_2(x)\rfloor,n=\max(X,Y)\) 由于 \(i\&j=0\) ......
Shanghai P9821 9821 2020 ICPC

cf1834E. MEX of LCM(维护右端点计算区间lcm)

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端点 区间 1834 MEX LCM

Entering China's strategies of water pollution and identifying an effective measure, as well as its working principle and impact

Water Pollution Control Strategies in China(Some examples) (1)China’s strategy for controlling water pollution focused first on reducing the discharge ......

[LeetCode] 1535. Find the Winner of an Array Game

Given an integer array arr of distinct integers and an integer k. A game will be played between the first two elements of the array (i.e. arr[0] and a ......
LeetCode Winner Array 1535 Find

Treatment of soil salinization

Treatment of soil salinization Strengthen agricultural management, as far as possible reasonable planting. We can improve water conservancy and streng ......
salinization Treatment soil of

CF390B Inna, Dima and Song Solution

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Solution 390B Inna Dima Song

qt---主进程加载一个子进程的方法以及其中遇到“Calling a private constructor of class 'QString'”

.pro QT += core gui greaterThan(QT_MAJOR_VERSION, 4): QT += widgets CONFIG += c++17 # You can make your code fail to compile if it uses deprecated API ......
进程 个子 constructor Calling private

Viper —— configuration solution for Go

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configuration solution Viper for Go

Proj. Unknown: Deciding Differential Privacy of Online Algorithms with Multiple Variables

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The sultion of P4959

problem & blog 首先我们看到 \(x,y\) 有可能为负数,所以我们先把它旋转到第一象限。 然后我们发现如果 \(x_a \ge x_b\) 且 \(y_a \ge y_b\) 那么 \(b\) 点就是无效的,应为他肯定可以被以左下角为 \((0,0)\),右上角为 \((x_a,y_ ......
sultion P4959 4959 The of

set通常用法

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set

A Template of Literature Survey For Reading Papers

Introduction Recently, I'm reading some papers and I had searched for many blogs about paper reading. To my disappointment, most of them are not organ ......
Literature Template Reading Survey Papers

初识Setting 应用WIFI设置

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Setting WIFI

[LeetCode] 2265. Count Nodes Equal to Average of Subtree

Given the root of a binary tree, return the number of nodes where the value of the node is equal to the average of the values in its subtree. Note: Th ......
LeetCode Average Subtree Count Equal

A Template of Daily Log For Recording Your Project

Daily Log 1 Author: Zhihao Li Date: November 2, 2023 Project: Robotics Stage I: Prepare the environment Records And Backups Configure Model Virtual En ......
Recording Template Project Daily Your

启动nginx报错nginx: [emerg] unexpected end of file, expecting "}" in /usr/local/nginx/conf/nginx.conf:

启动nginx报错:“nginx: [emerg] unexpected end of file, expecting “}” in /usr/local/nginx/conf/nginx.conf:118”重启nginx时,报这么个错: [root@localhost conf]# /usr/lo ......
nginx conf quot unexpected expecting

[PG] Another example of FCSA

function actual arguments and cadidates T = (193341, 23, 23) C = [(193341, 1700, 1700), (1700, 1700, 1700), (1043, 1700, 1700)] query type information ......
Another example FCSA PG of

Java拾贝第十四天——集合之Set

Set Set是Collection的子接口,其定义如下: public interface Set<E> extends Collection<E> 与List相同,此接口也使用了泛型,使用时必须指定具体的类型。 Set常见的实现子类:HashSet、TreeSet HashSet HashSet ......
Java Set

debian 11 安装docker-ce 出现异常 “Hash Sum mismatch Hashes of expected file”

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docker-ce mismatch expected debian Hashes