balance 1503a bits the
org.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: 16 in the jsp file: /monday-01.jsp
``` org.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: 16 in the jsp file: /monday-01.jsp System.out canno ......
Codeforces 1444E - Finding the Vertex
非常神秘的一道题，当之无愧的 *3500。 首先考虑转化题意。考虑一种决策树，由于我们每次问一条边之后，相当于会根据信息删掉两个连通块中的一个，因此一种决策树实际上对应了原树的一棵边分树。而为了让最坏情况下的询问次数最少，我们目标实际上是最小化边分树的深度。 考虑借鉴 [P5912 JAS](htt ......
【Shell】Display the ddl for all users in Oracle DB with bash script
脚本说明： 1、普遍用于 使用expdp/impdp 数据泵进行的数据(全库或者特定schemas)迁移 2、适用于无PDB的Oracle环境 3、适用于RAC,SI,ADG 以及多实例的环境 使用方法： 创建脚本为 display_all_users_ddl.sh 然后将正文内容贴入 并保存，然后 ......
webpack报错处理:The extension in the request is mandatory for it to be fully specified.
完整的报错提示如下: BREAKING CHANGE: The request './module2' failed to resolve only because it was resolved as fully specified(probably because the origin is s ......
MySQL OEM报警Increase the binlog_cache_size variable dynamically and monitor the ratio of Binlog_cache_disk_use to Binlog_cache_use .
Increase the binlog_cache_size variable dynamically and monitor the ratio of Binlog_cache_disk_use to Binlog_cache_use . When it reaches an acceptable ......
Exploring the Role of Preclinical Toxicology Tests in Vaccine Development
The difficulty of drug safety evaluation in vaccines is that the vaccine does not directly exert preventive or therapeutic effects but acts by inducin... ......
parser.add_argument()已经设置了默认值，但调试时仍然报错：main.py: error: the following arguments are required: data
报错的代码： ` parser.add_argument('data', type=str, default='/home/user1/datasets/cifar10', help='path to dataset') ` 在data前加"--"，修改后的代码： ` parser.add_argu ......
The Open Graph protocol(开放图谱协议)的介绍及应用
### 介绍 `Open Graph 协议`使任何网页都可以成为社交中的丰富对象。例如，用于 `Facebook` 以允许任何网页具有与 `Facebook `上任何其他对象相同的功能。 以下是把链接分享到`钉钉`，钉钉识别后显示的效果：  Call getNextException to see other errors in the batch.
 **字段内容超过数据库字段设置的长度导致的插入错误的提示信息** 如何定位是哪个字段长度不够长？ mysql的话 ......
The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement
The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement 默认情况下，启动MySQL数据库实例期间，会读取所有的权限表条目到内存中，后续被缓存到内存中的权限条 ......
B. Complete The Graph
B. Complete The Graph ZS the Coder has drawn an undirected graph of $n$ vertices numbered from $0$ to $n - 1$ and $m$ edges between them. Each edge of ......
How to change the default Python2 to Python3 on Linux All In One
How to change the default Python2 to Python3 on Linux All In One
在 Linux 中如何把默认的 Python2 更改为 Python3
.bashrc / .zshrc alias
symbolic link 符号链接
......
K8S异常之Unable to connect to the server: x509: certificate has expired or is not yet valid【转】
一、问题：k8s证书过期 [root@nb001 ~]# kubectl get node Unable to connect to the server: x509: certificate has expired or is not yet valid: current time 2022-12 ......
cryptohack wp （CRYPTO ON THE WEB篇）（持续更新)
#Token Appreciation  ``` import jwt jwt_token = "eyJ0eXAi ......
the way to make jupyter output cell has a dark background in vscode
# the issue to be fixed As shown in the picture, jupyter output cell has a bright background, even it's ask to use dark background.  **发表时间：**2021(NeurIPS 2021) **文章要点：**这篇文章提出一个tandem learni ......
CF1819C The Fox and the Complete Tree Traversal
# [$\color{purple}\text{The Fox and the Complete Tree Traversal}$](https://www.luogu.com.cn/problem/CF1819C) 比较有意思的一题。先考虑一个序列的权值。对长度为 $len$ 的序列排序，价值为 ......
git拉取代码出现“remote: The project you were looking for could not be found.”错误分析
如果输入的远程地址正确，那么极大可能是用户未登录或多个用户登录无法正确获取你想要的用户，如下图所示， 由于之前有同事在我电脑登录git账号，所以在windows凭据中保存了2个git账号，而默认使用的第一个账号的远程库中不存在我想要的目标仓库数据，就出现了“remote: The project y ......
AtCoder Regular Contest 132 F Takahashi The Strongest
[洛谷传送门](https://www.luogu.com.cn/problem/AT_arc132_f "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/arc132/tasks/arc132_f "AtCoder 传送门") 没见过这种在新运算 ......
Redis 的bitmap byte转位bit
### bitmap 我们知道redis的bitmap本身不是一种数据结构，底层实际上依靠字符串进行存储，可以借助字符串进行位操作，由于redis的字符串最大内存位512MB，所以bitmap的bit位也是有上限的，8 * 1024 * 1024 * 512 = 2^32，由于C语言字符串的末尾都有 ......
How to find the TLS used for the SQL Server connection
本文是How to find the TLS used for the SQL Server connection这篇英语文章的翻译，此文出处请见于文章底部链接：原文出处[1] 对于客户，我做了一些研究，如何找出SQL Server数据库会话连接使用了哪一种TLS协议。唯一的方式就是创建一个扩展事件 ......
IDEA配置jdk（或者IDEA代码报错The SDK is not specified for module）
参考：https://blog.csdn.net/mask_boys/article/details/117385087 今天敲代码时，出现一个错误，那就是The SDK is not specified for module，意思是没有为模块添加SDK，所以会出现如下错误 如何解决这个问题呢： 首 ......
MYSQL设置密码时显示Failed! Error: SET PASSWORD has no significance for user 'root'@'localhost' as the authentication method used doesn't store authentication d
用这个命令进入mysql sudo mysql 在sql命令行输入以下命令回车，你就可以把密码改成mynewpassword ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password by 'mynewpassword ......
MYSQL设置密码时显示Failed! Error: SET PASSWORD has no significance for user 'root'@'localhost' as the authentication method used doesn't store authentication d
用这个命令进入mysql sudo mysql 在sql命令行输入以下命令回车，你就可以把密码改成mynewpassword ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password by 'mynewpassword ......
The server encountered an internal error that prevented it from fulfilling this request.
``` org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnection ......
Git拉取代码报错：Can't Update No tracked branch configured for branch dev or the branch doesn't exist.To make your branch track a remote branch call
错误： 解决方法： 第一步： git pull origin(远程仓库名称) develop(远程分支名称) --allow-unrelated-histories 第二步： git branch --set-upstream-to origin(远程仓库名称)/develop(远程分支名称) de ......
printk - The standard C library routine printf()
如下库我试过，只用定义下out_char函数即可，重定向一下 out_char 1 /* 2 * File: printk.c 3 * Purpose: The standard C library routine printf(), but without 4 * all the baggage. ......
Nginx_启动时报错：Job for nginx.service failed because the control process exited with error code. See "systemctl stat
一、报错如下Job for nginx.service failed because the control process exited with error code. See "systemctl status nginx.service" and "journalctl -xe" for d ......