the

cpp test write content speed to ssd and usual disk respectively 1M,10M,100M rows data,the fact has illustrated the write speed of ssd is 4-5 times faster than usual disk

#include <chrono> #include <ctime> #include <fstream> #include <iomanip> #include <iostream> #include <sstream> #include <thread> #include <uuid/uuid. ......
speed write usual disk respectively

git add 时报错 warning: in the working copy of 'package-lock.json', LF will...

来源:https://blog.csdn.net/qq_43842093/article/details/128471953 问题: 执行 git add . 时报错: 原因: 换行符的问题, Windows下换行符和Unix下的换行符不一样,git会自动转换。 解决办法: 执行如下命令: git ......
package-lock 时报 warning package working

Some details for the Shell which I think is important

拼接字符串, 在定义好变量之后, 输出时候的拼接, 注意无意输出一些空格 。 比如: #!/bin/bash a1="China" a2="${a1}, Japan and Korean are the three important countries in east asia. \n" a3=" ......
important details Shell which think

Apr 2021-Lucid Dreaming for Experience Replay: Refreshing Past States with the Current Policy

本文提出了用于经验回放的清醒梦(LiDER),一个概念上的新框架,允许通过利用智能体的当前策略来刷新回放体验。 ......

[刷题笔记] ybt1250:The Castle

[Problem](http://ybt.ssoier.cn:8088/problem_show.php?pid=1250) ### Solution 显然bfs,只不过扩散的时候需要判断墙 那么如何判断墙呢?题目只给出了每个方块墙方向的和 原来的思路是可以暴力,很复杂但是可做,代码就不给了。 后来 ......
笔记 Castle 1250 ybt The

「解题报告」CF768G The Winds of Winter

真的不难,为啥是 3300\*。还是模拟赛 T3,很气啊,为什么不先看这个题。 首先贪心很容易发现一定是将当前子树大小最大的那棵树的某个子树移动到最小的那个树内。那么我们记移动的这个子树的大小为 $x$,所有树中最小的树大小为 $a$,最大的为 $c$,次大的为 $b$,那么我们就是在最小化 $\m ......
报告 Winter Winds 768G 768

2023-06-03 Couldn't find a tree builder with the features you requested: lxml. Do you need to install a parser library?

运行一个py文件,问题定位到: html=self.get_html(url) soup=BeautifulSoup(html,'lxml') 解决方案:打开cmd,运行下面代码: pip install lxml 等待安装成功,再次运行py文件就不会报这个错了。 ......
requested you features builder install

P1545 [USACO04DEC] Dividing the Path G 题解

丢一发好理解又好写的线段树优化dp。 [题目传送门](https://www.luogu.com.cn/problem/P1545 "题目传送门") ### 简要题意 给定一个长为 $l$ 的线段,求出尽量少的不相交区间覆盖整段线段,要求题目给的所有子区间只被 $1$ 个区间覆盖。 ### 分析 显 ......
题解 Dividing P1545 USACO 1545

首次进入Mysql修改密码报“The MySQL server is running with the --skip-grant-tables option so it cannot execute”--九五小庞

第一次安装完mysql,修改默认密码的时候,报“The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement”。 先刷新mysql然后再重新修改密码即可。 mys ......

[LeetCode] 2101. Detonate the Maximum Bombs

You are given a list of bombs. The range of a bomb is defined as the area where its effect can be felt. This area is in the shape of a circle with the ......
LeetCode Detonate Maximum Bombs 2101

How to fix the for...in loop errors in Python All In One

How to fix the for...in loop errors in Python All In One Python 3 TypeError: string indices must be integers ......
errors Python in loop How

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 ......

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

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