learning summary second the

1819B - The Butcher (思维)

大意:有一个大矩形,每次可以横着切或者竖着切,给你n个小矩形,问你原来的大矩形的宽高 思路:可以发现,最多有两种可能,找到所给矩形的宽和高的最大值,模拟check() 知识点:LL H=*max_element(a.begin(), a.end());数组最大值 ve.emplace_back(H, ......
思维 Butcher 1819B 1819 The

The 'Access-Control-Allow-Origin' header contains multiple values'*, *', but only one is allowed.

**报错内容** The 'Access-Control-Allow-Origin' header contains multiple values '*, http://192.168.237.131', but only one is allowed. Have the server send ......

强化学习基础篇[2]:SARSA、Q-learning算法简介、应用举例、优缺点分析

# 强化学习基础篇[2]:SARSA、Q-learning算法简介、应用举例、优缺点分析 # 1.SARSA SARSA(State-Action-Reward-State-Action)是一个学习马尔可夫决策过程策略的算法,通常应用于机器学习和强化学习学习领域中。它由Rummery 和 Niran ......
优缺点 算法 Q-learning learning 基础

Machine Learning 【note_02】

# note_02 Keywords: Classification, Logistic Regression, Overfitting, Regularization ## 1 Motivation Classification: - "binary classification": $y$ ca ......
Learning Machine note 02

ubuntu报错:The following signatures couldn't be verified because the public key is not available 解决办法

当在ubuntu中加入了第三方源,没有设置公钥 更新索引的时候就会提示 ```bash The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 082AB56BA ......

w task 2 - the tasks

Understand the task Break the task into parts Methods, techniques lots of practices feedback Four scoring criteria task response coherence and cohesio ......
tasks task the

Machine Learning 【note_01】

Declaration (2023/06/02): This note is the first note of a series of machine learning notes. At present, the main learning resource is *the 2022 Andre ......
Learning Machine note 01

选修-2-Where does the error come from?

[CLICK](https://blog.csdn.net/qq_38689352/article/details/114776396) # 1. Error的来源 error实际来源于`bias`和`variance`. ![image](https://img2023.cnblogs.com/b ......
Where error does come from

LORD OF THE ROOT靶场渗透实战

### 知识点 **1. 端口碰撞** 端口碰撞(Port Knocking)是一种安全技术,用于隐藏和保护网络服务器。**该技术通过发送一系列特定的数据包,来触发服务器开放指定端口**。在没有收到这些特定数据包的情况下,服务器的端口会一直处于关闭状态,从而增强服务器的安全性。 通常,端口碰撞技术将 ......
靶场 实战 LORD ROOT THE

HDU1028 Ignatius and the Princess III

## Description ![](https://s1.ax1x.com/2023/06/01/p9ztpdJ.png) 题意:给出 $n(1\le n\le 120)$,求出 $n$ 的整数划分方案数。 ## Solution 先考虑一个简单的问题:从 $1\sim n$ 的数字取出若干个数字 ......
Ignatius Princess 1028 HDU III

airflow standalone problem fix: The webserver is already running under PID 3244

## problems with airflow standalone to start server with error: `The webserver is already running under PID 3244`. Try to list full server listening i ......
standalone webserver airflow problem already

Resource [logback.xml] occurs multiple times on the classpath.

15:16:57,390 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy] 15:16:57,390 |-INFO in ch.qos.logback. ......
classpath Resource multiple logback occurs

MySQL 8错误日志出现"The table /home/work/mysql_3306/tmp/#sqla2b_298b06_4d is fu11!"

############## 了解MySQL 8.0.26的错误日志出现"The table /home/work/mysql_3306/tmp/#sqla2b_298b06_4d is fu11!"的bug,暂时通过修改临时表的存储引擎为内存引擎解决 MySQL8.0.13 开始引入新的临时内存表 ......
quot 错误 sqla2b MySQL mysql

echarts更新数据后报错 There is a chart instance already initialized on the dom

产生原因 使用Echarts插件的时候,多次加载会出现There is a chart instance already initialized on the dom.的警告,表示DOM上已经初始化了一个图表实例。 解决方案 定义一个全局变量,在初始化之前先判断该实例是否存在,若存在,先销毁。 va ......
initialized instance echarts already 数据

D. The BOSS Can Count Pairs

D. The BOSS Can Count Pairs You are given two arrays $a$ and $b$, both of length $n$. Your task is to count the number of pairs of integers $(i,j)$ su ......
Count Pairs BOSS The Can

IDEA中slf4j和logback冲突,快速排除(LoggerFactory is not a Logback LoggerContext but Logback is on the classpath)

pom文件中右击 ctrl+f 输入点击定位 选中shift+delet,直接排除 或者手动输入排除 ......

「解题报告」CF1152F2 Neko Rules the Catniverse (Large Version)

发现有互不相等的限制,那就考虑一下连续段 DP。每次从小到大考虑每个数是否填,填的话填到哪里即可。 容易发现题目中的限制相当于要求每一个连续段的右边填的数不能与它差出 $m$,且容易发现每个段的差的要求一定不相等,那么我们可以直接 $2^m$ 状压记录每个连续段的差值要求。然后再记录一下是否已经确定 ......
Catniverse Version 报告 1152F Large

pip安装解决报错:WARNING: Running pip as the ‘root‘ user can result in broken permissions and conflicting

一、问题描述今天使用pip安装库的时候和一些模块的时候,出现了一下报错信息: 大概意思就是:提示以“root”用户身份运行 pip 可能会导致权限损坏和冲突,因此我们需要创造一个虚拟的环境区执行它 二、解决方法1、创建一个虚拟环境 (superset) [root@bigdata111 ~]# py ......
conflicting permissions pip WARNING Running

【Oracle】Show the change history of tbs' size

注意: 脚本都从dba_hist_tbspc_space_usage系统视图获取数据,但是这个系统视图中保存的数据的时间是依赖AWR采样数据保留期限的。 所以你从这个系统视图可能查找不出很早之前的表空间数据使用情况,如果需要历史的表空间使用数据,可能需要定期采集数据并存储到起来。 In non mu ......
history Oracle change Show size

Computing the depth plane

......
Computing depth plane the

If you use STDIN or specify a URL pointing to a plain text file, the system places the contents into a file called Dockerfile, and any -f, --file option is ignored.

docker build | Docker Documentation https://docs.docker.com/engine/reference/commandline/build/ In most cases, it’s best to put each Dockerfile in an ......
file Dockerfile the contents pointing

How to fix the problem that Raspberry Pi cannot use the root user for SSH login All In One

How to fix the problem that Raspberry Pi cannot use the root user for SSH login All In One 如何修复树莓派无法使用 root 用户进行 SSH 登录的问题 ......
Raspberry the problem cannot login

【Azure K8S】演示修复因AKS密钥过期而导致创建服务不成功的问题(The provided client secret keys for app ****** are expired)

问题描述 在Azure Kubernetes 服务中,创建一个Internal Load Balancer服务,使用以下yaml内容: internallb.yaml apiVersion: v1 kind: Service metadata: name: ilb-myapp annotations ......
密钥 provided expired client secret

【Oracle】Generate the tablespace creation in a time

此脚本的使用场景是需要使用datapump方式进行数据迁移时,需要在目标数据库上创建对应的表空间,这时对于表空间数量比较多的系统, 比如peoplesoft来说,手工单独创建表空间会是一个比较麻烦的事情。 以下脚本在源数据库上运行,获取表空间的创建脚本,然后只需对路径相应修改即可使用。 -- 获取表 ......
tablespace Generate creation Oracle time

How to modify the username and password of Raspberry Pi All In One

How to modify the username and password of Raspberry Pi All In One 如何修改树莓派的用户名和密码 ......
Raspberry password username modify How

引入druid查询数据库时间只要超过10秒会报错Communications link failure,The last packet successfully received from the server was xxx milliseconds ago(已解决)

在写项目时候发现springboot(springcloud)项目使用多数据源引入druid的时候,只要查询数据库时间超过10s就会报错: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failur ......

GPT-Investigation on the Implementation of Rockchip Product's Audio and Video Codec Function

## 1 Is this function of Rockchip product developed on Linux? Yes, this function of Rockchip product is developed on Linux. According to the datasheet ......

论文阅读 | Learn from Others and Be Yourself in Heterogeneous Federated Learning

**在异构联邦学习中博采众长做自己** 代码:https://paperswithcode.com/paper/learn-from-others-and-be-yourself-in **摘要** 联邦学习中有异质性问题和灾难性遗忘。首先,由于非I.I.D(相同独立分布)数据和异构体系结构,模型在 ......

April 2023-Memory-efficient Reinforcement Learning with Value-based Knowledge Consolidation

本文基于深度q网络算法提出了记忆高效的强化学习算法来缓解这一问题。通过将目标q网络中的知识整合Knowledge Consolidation到当前q网络中,所提算法减少了遗忘并保持了较高的样本效率。 ......

The 2023 Guangdong Provincial Collegiate Programming Contest

# A - 算法竞赛 ```cpp #include using namespace std; #define int long long void solve(){ int st , n , ed; cin >> st >> n; map cnt; for( int i = 1 , x ; i > ......