flexibility the enabling focuses
【每日一题】Problem 289B. Polo the Penguin and Matrix
[原题](https://codeforces.com/problemset/problem/289/B) #### 解决思路 1. 题目要求将所有元素通过 **+-** 的方式变成同一个元素 $e$，那么就需要找到一个点，计算小于（或大于）$e$ 的所有点所需变化总次数 2. 因此可以将二维数组转 ......
E:[IU] : Failed to open the configuration file! Exiting...
This is outside Qt's scope, the message is not printed by Qt. From the linked discussion it would seem that the message is output by the Intel graphic ......
What does the term epoch mean? Why it is so important?
在人工智能中，"epoch"（中文称为"训练轮次"或"周期"）是指训练神经网络时将整个训练数据集通过神经网络进行一次正向传播和反向传播的过程。 每个"epoch"包含一次前向传播和一次后向传播，用于更新神经网络的参数。在每个"epoch"中，神经网络对整个训练数据集进行一次学习和优化，以逐渐提高模型 ......
智能计算理论：Please write down the procedure of PSO algorithm.
粒子群优化（Particle Swarm Optimization，PSO）算法是一种基于种群的优化算法，灵感来源于鸟群或鱼群的社会行为。下面是PSO算法的一般过程： 初始化粒子群：创建一个粒子群，其中每个粒子表示问题的一个潜在解。在搜索空间内随机初始化粒子的位置和速度。 评估适应度：根据每个粒子的 ......
【题解】#373. 「USACO1.1」Friday the Thirteenth 题解（2023-07-01更新）
# #373. 「USACO1.1」Friday the Thirteenth 题解 ## **[题目传送门](https://qoj.fzoi.top/problem/373)** **欢迎大家指出错误并联系这个蒟蒻** ## 更新日志 - **2023-02-01 17:20 文章完成** - ......
[OSPP开源之夏-2023] 结合NWR实现Flexible Raft
- Feature Name: Implementing Flexible Raft with NWR - Author: yzw 1294566108@qq.com - Date: 2023-06-28 - Issue Link: https://github.com/sofastack/sofa ......
Table flags are 0 in the data dictionary but the flags in file ./ibdata1 are 0x4800!
# 1、问题截图 cat /var/log/mysql/error.log ``` sql 2019-01-28T09:49:57.076019Z 0 [ERROR] [FATAL] InnoDB: Table flags are 0 in the data dictionary but the f ......
Wild Patterns: Ten Years After the Rise of Adversarial Machine Learning---reading
# Wild Patterns: Ten Years After the Rise of Adversarial Machine Learning reading - 攻击目标 - 安全破坏 - 完整性破坏: 逃避检测，而不影响正常的系统运行 - 可用性破坏: 使得合法用户不能正常使用系统 - 隐私 ......
The proxy difference between mitmproxy and fiddle
# Description 1. A bank webside , I can caught the https flows when to use fiddle ; 2. And I caught fail of the https flows when to use mitmproxy , - ......
Educational Codeforces Round 151 F. Swimmers in the Pool
### 一.前言 本来打算打打这个比赛玩玩，结果同学找我打游戏王去了，就没打现场(逃) 因为是一道不错的数学题，来写写补题的题解 这里点名批评 @[HOLIC](https://codeforces.com/profile/HOLlC) 喂给我的假题意，让我查错大半天，最后发现题意错了还重新推了好多 ......
E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied) E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root?
错误： E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied) E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/ ......
Vue3 vite：is a JavaScript file. Did you mean to enable the 'allowJs' option?
描述 今天在vue3+vite下进行打包时,突然vscode报了一个error。 大概的意识是询问是否启用“allowJS”选项，因为该文件在程序内是指定用于编译的根文件。 提示信息已经很明确了，下面从网上摘抄了下什么是 allowJS 选项。 allowJs是1.8中新提供的选项。TypeScri ......
Cross-thread operation not valid: Control 'txtMessage' accessed from a thread other than the thread it was created on.
Winform TextBox Cross-thread operation not valid: Control 'txtMessage' accessed from a thread other than the thread it was created on. (330条消息) 解决Cros ......
CentOS7 开机异常Failed to open /sysroot/etc/fstab:Input 和 mysql无法启动 Ignoring the redo log due to missing MLOG
出现问题，系统进不去； 参考： 亲测有效 https://blog.csdn.net/Nightwish5/article/details/119640728 ......
讲座笔记2：Fairness with Censorship: Bridging the Gap between Fairness Research and Real-world Deployment
Fairness with Censorship: Bridging the Gap between Fairness Research and Real-world Deployment 主讲人：Wenbin Zhang Censorship: 会有信息的缺失 原因： Study ends - n ......
How To Install and Enable SSH Server on Debian 10
https://devconnected.com/how-to-install-and-enable-ssh-server-on-debian-10/ How To Install and Enable SSH Server on Debian 10 written by Schkn This tu ......
Tips: How to Get the Currently Selected HTML Content in Major Browsers
```js function getSelectionHtml() { const sel = window.getSelection(); if (sel.rangeCount) { var container = document.createElement("div"); for (var i ......
npm install报gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.没有python环境
1 gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable. 2 gyp ERR! stack at PythonFinder.failNoPython (/Us ......
mysql: [Warning] Using a password on the command line interface can be insecure.
https://zhuanlan.zhihu.com/p/542166965 ......
java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '}' at line 1
# 问题 报错代码 ``` org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.sql.SQLSyntaxErrorException: You have an err ......
MySqlException(0x80004005) Reading from the stream has failed 远程主机强迫关闭了一个现有的连接
不同客户端电脑连接服务器数据库，通过navicat管理工具可以正常连上，但是通过程序连接提示MySqlException(0x80004005) Reading from the stream has failed 远程主机强迫关闭了一个现有的连接(注意:部分电脑通过程序也是可以正常连接服务器数据库 ......
Hack The Box-Starting Point-Crocodile
## 答案： 1. 任务1：What Nmap scanning switch employs the use of default scripts during a scan? `-sC` ![image](https://img2023.cnblogs.com/blog/1367845/2023 ......
gdb.exe: warning: Couldn't determine a path for the index cache directory.
GDB 调试中出现的警告 D:\\gitee\\luatos-soc-2022\\out\\example_copy> arm-none-eabi-gdb example.elf C:\\SysGCC\\bin\\arm-none-eabi-gdb.exe: warning: **Couldn't ......
【GiraKoo】VS提示Some bytes have been replaced with the Unicode substitution character
# 【问题解决】VS提示Some bytes have been replaced with the Unicode substitution character VS提示Some bytes have been replaced with the Unicode substitution char ......
Hack The Box-Starting Point-Sequel
## 答案 1. 任务1：During our scan, which port do we find serving MySQL? `3306` ![image](https://img2023.cnblogs.com/blog/1367845/202306/1367845-20230628121 ......
Mysql用户建立触发器报错You do not have the SUPER privilege and binary logging is enabled
分析原因：是log_bin_trust_function_creators值为off导致，因为Table中有Trigger，如果不创建Trigger，不会出现这样的错误信息，但Trigger必须创建临时解决办法:用root用户登录： mysql -u root -pmysql>set global ......
has been blocked by CORS policy: The request client is not a secure context and the resource is ...
该报错原因为：Chrome浏览器禁止外部请求访问本地，被CORS策略阻止解决方案：1、打开chrome的设置： chrome://flags/#block-insecure-private-network-requests2、将 Block insecure private network requ ......
Hack The Box-Starting Point-Appointment
## 答案 1. 任务1：What does the acronym SQL stand for? `Structured Query Language` ![image](https://img2023.cnblogs.com/blog/1367845/202306/1367845-2023062 ......
Vue报错之 Property or method "XXX" is not defined on the instance but referenced during render
原因1：真的没定义， 原因2：定义了，但是需要检查大小写是否一致 ......
SAP Restful ABAP Programming 和 HTML Over the wire 的一些对比
Restful ABAP Programming(简称RAP)旨在找到 SPA 和 MPA 之间的`最佳平衡点`。 RAP 丰富了 JSON 本身或初始 OData 请求的元数据中的响应，并且视图和模型是先前在 CDS 中定义的后台 annotation： ![](https://img-blog. ......