of
[LeetCode] 2660. Determine the Winner of a Bowling Game
You are given two 0-indexed integer arrays player1 and player2, that represent the number of pins that player 1 and player 2 hit in a bowling game, re ......
Cannot read properties of null (reading 'parentElement')问题的解决
问题描述 出现了一堆这种报错，echarts真的，我的一生之敌~~~~~ 问题解决 发现，我使用输入框，将文本内容传递到后端，然后再传回到这个界面，就直接引起了整体的报错，在我去掉输入框时， 这个错误就被解决啦~~~ 所以，我就直接将条件输入的文本框与图表分开了，这样就能够解决上面那个问题啦！ ......
【五期李伟平】CCF-A（S&P'20）The Value of Collaboration in Convex Machine Learning with Differential Privacy
Nan W., et al. “The Value of Collaboration in Convex Machine Learning with Differential Privacy.” 2020 IEEE Symposium on Security and Privacy. 304-317 ......
特殊的bug：element 0 of tensors does not require grad and does not have a grad_fn
很多帖子都说了，设置requires_grad_()就行。 但是我这次遇到的不一样，设置了都不行。 我是这种情况，在前面设置了torch.no_grad():，又在这个的作用域下进行了requires_grad_()，这是不起作用的。 简单版： with torch.no_grad(): model ......
CF768G The Winds of Winter题解
我们考虑暴力咋做，每次得到一个森林之后，必定是从最大的树上摘一棵子树，挪到最小的树上，所以此时的答案为 \(max(siz_{mx}-x,siz_{mn}+x,siz_{次大值} )\)，于是发现 \(x=\frac{siz_{mx}-siz_{mn}}{2}\) 时答案最优，所以只需找到这个值的前 ......
Quake recovery starts with a bowl of hot beef noodles 地震恢复从一碗热牛肉面开始
In freezing temperatures, a simple bowl of beef noodles brings hope to thousands of residents who lost their homes in the magnitude-6.2 earthquake in ......
of type [class java.lang.String] to [class java.util.Date]
报错：javax.el.ELException: Cannot convert [2023-11-14 22:35:34] of type [class java.lang.String] to [class java.util.Date] 问题分析：相应数据的类型不正确 bean层写的是 ： pr ......
docker 启动报错 library initialization failed - unable to allocate file descriptor table - out of memory
docker 启动报错 library initialization failed - unable to allocate file descriptor table - out of memory 1.报错日志 library initialization failed - unable to ......
『LeetCode』4. 寻找两个正序数组的中位数 Median of Two Sorted Arrays
『1』合并两个正序数组 我的想法： 先借鉴归并排序的关键步骤将两个数组合并，然后根据数组长度是奇数还是偶数返回中位数。 实现代码： class Solution { // Using the Key Thinking of Merge Sort // M is the length of nums1 ......
React 项目启动在 chrome 上报错 之 Uncaught TypeError: Cannot read property ‘forEach‘ of undefined
chrome上报错如下： 原因：安装React Developer Tools导致的，关闭这个插件就行 ......
【pwn】[ZJCTF 2019]EasyHeap --fastbin攻击，house of spirit
首先查看一下附件的保护情况 可以看到，got表是可修改的状态 接着看主函数的逻辑 非常典型的菜单题，接着分析每一个函数的作用 unsigned __int64 create_heap() { int i; // [rsp+4h] [rbp-1Ch] size_t size; // [rsp+8h] ......
C++标准库std::string的find_first_not_of 方法介绍：
C++标准库 std::string 的 find_first_not_of 方法介绍： 例如： stra.find_first_not_of(s_fmt_a) 在字符串 stra 中找到第一个 不在 s_fmt_a 字符串中出现过的字符。 stra = "abc", abc 字符 都在 s_fmt ......
责任链模式 Chain Of Responsibility
一、定义 为请求创建一个接收此次请求对象的链 特点：类中包含一个和自己同类型类的对象 二、适用场景 一个请求的处理需要多个对象当中的一个或几个协作处理 三、优缺点 1、优点 请求的发送者和接收者（请求的处理）解耦 责任链可以动态组合 2、缺点 责任链太长或者处理时间过长，影响性能 责任链有可能过多 ......
Nacos启动：[NACOS HTTP-POST] The maximum number of tolerable server reconnection errors has been reached
一、表象 二、分析 源码： public HttpRestResult<String> httpPost(String path, Map<String, String> headers, Map<String, String> paramValues, String encode, long re ......
The Missing Semester of Your CS Education----shell工具和脚本
一.shell脚本 1.$的关键字 $0 - 脚本名 $1 到 $9 - 脚本的参数。 $1 是第一个参数，依此类推。 $@ - 所有参数 $# - 参数个数 $? - 前一个命令的返回值 $$ - 当前脚本的进程识别码 !! - 完整的上一条命令，包括参数。常见应用：当你因为权限不足执行命令失败时 ......
What do you think of Crazy Shopping on Novermber?
What do you think of Crazy Shopping on Novermber? As an AI language model, I do not have personal opinions or feelings about shopping on November or a ......
What do you think of Online and Classroom Class advantages and disadvantages?
What do you think of Online and Classroom Class advantages and disadvantages? Online and classroom classes each have their own set of advantages and d ......
Why the developed country choose the countries of southeast Asia to build processing factory used their labour force?
The developed countries choose countries in Southeast Asia to build processing factories and utilize their labor force for various reasons. Some of th ......
CentOS7 yum错误：One of the configured repositories failed (Unknown)
一、现象 二、原因 可能会有其他原因造成该问题（如，网络问题）。我这边的问题是红框中指定镜像重复，导致yum命令执行失败。 三、解决 cd /etc/yum.repos.d 排查重复的repo并将其删除。 ......
Nacos启动：[NACOS HTTP-POST] The maximum number of tolerable server reconnection errors has been reached
一、表象 二、分析 源码： public HttpRestResult<String> httpPost(String path, Map<String, String> headers, Map<String, String> paramValues, String encode, long re ......
CF1912J Joy of Pokémon Observation记录
题目链接：https://codeforces.com/contest/1912/attachments/download/23419/icpc-nerc-2023-statements.pdf 题意简述 求方程 \(\sum \limits_{i =1}^{s} l_i x_i = t\) 的非负 ......
Nacos启动：[NACOS HTTP-POST] The maximum number of tolerable server reconnection errors has been reached
一、表象 二、分析 源码： public HttpRestResult<String> httpPost(String path, Map<String, String> headers, Map<String, String> paramValues, String encode, long re ......
Feedback Control of Dynamic Systems_P2
187. Problems for Section 5.4: Design Using Dynamic Compensation 5.21 Let \[G(s) = \frac{1}{s^{2} + 7s + 12}\ \text{~}\text{and}\text{~}\ D_{c}(s) = K ......
Feedback Control of Dynamic Systems_P1
GLOBAL EDITION 1. Feedback Control of Dynamic Systems EIGHTH EDITION Franklin \(\cdot\) Powell \(・\) Emami-Naeini Table of Laplace Transforms Number \ ......
[ARC107F] Sum of Abs
[ARC107F] Sum of Abs 发现点数比较少，考虑最小割 我们最大可能的答案为 \(\sum|b_i|\) ，现在考虑减去多余答案 首先点可以不选，于是拆点，之间边权为 \(a_i+|b_i|\) 钦定割完之后，和 \(S\) 连通的点最终取正数，和 \(T\) 连通的点最终取负数，于是 ......
IDEA中出现java file outside of source root
该问题出现原因是，该文件不可编译，需要设置一下sourcesRoot, 一般设置java文件夹为sourceRoot,否则原来的package路径需要更改 ......
Sum of XOR Functions 题解
题意 给定一个数 \(n\) 和一个包含 \(n\) 个数的序列 \(a\)，求出以下式子模 \(998244353\) 的值： \(\sum_{i=1}^{n}\sum_{j=i}^{n} f(i,j)\times (j-i+1)\)。 其中 \(f(i,j)\) 的值为 \(a_{i}\oplu ......
Nacos启动：[NACOS HTTP-POST] The maximum number of tolerable server reconnection errors has been reached
一、表象 二、分析 源码： public HttpRestResult<String> httpPost(String path, Map<String, String> headers, Map<String, String> paramValues, String encode, long re ......
Bias of an estimator
Bias of an estimator Difference between an estimator's expected value from a parameter's true value For broader coverage of this topic, see Bias (stat ......
CARAFE: Content-Aware ReAssembly of FEatures 可学习的上采样
CARAFE: Content-Aware ReAssembly of FEatures * Authors: [[Jiaqi Wang]], [[Kai Chen]], [[Rui Xu]], [[Ziwei Liu]], [[Chen Change Loy]], [[Dahua Lin]] DO ......