maximum prefix 1810 the
【题解】CF gym 104337 G. Guess the Polynomial
statement:https://codeforces.com/gym/104337/problem/G 。 即求 $f(x)=\sum\limits_{i=0}^{p-2}a_ix^i$,其中只有不超过 $n$ 个 $a_i$ 非 $0$ 。 记: $$ \begin{aligned} A_{n ......
The 2019 ICPC China Shaanxi Provincial Programming Contest(2019陕西省赛)
## B. Grid with Arrows 并查集一下。 ```cpp #include "bits/stdc++.h" using namespace std; using i64 = long long; struct UnionFind { int n; vector f; UnionFin ......
The information of Seminars Language
‘The seminar is a common way ofteaching students on university courses in the UK and it is very likely that you will experience seminars on your cours ......
解决docker报错Job for docker.service failed because start of the service was attempted too often
转载自:https://blog.csdn.net/Along_168163/article/details/124118833 docker安装之后重新安装报错如下: Job for docker.service failed because start of the service was at ......
django python manage.py migrate 后报错字段长度超了 django.db.utils.OperationalError: (1118 'Row size too large. The maximum row size for the used table type, not counting BLOBs, is 65535.
现象: 在models.py 将CharField字段的maxlength=修改后,执行ython manage.py migrate 报错django.db.utils.OperationalError: (1118 'Row size too large. The maximum row siz ......
The University of Queensland
The University of Queensland The University of Queensland 是一所位于澳大利亚昆士兰州布里斯班的公立研究型大学,成立于1909年,是澳大利亚八大名校之一。这所大学有 MBA 项目,属于商学院的研究生课程。如果你想了解更多关于这个学校和 MBA ......
[Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found"
[Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found" vi /etc/yum.repos.d/epel.repo enabled=0vi /etc/yum/pluginconf.d/fastest ......
【Docker】报错:Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock
安装完docker,运行指令时,出现了以下错误提示: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get "http://%2Fva ......
CF420E Playing the ball
## Description 程序员不能总是整天坐着编程。有时站起来离开办公桌,休息一下,与同事闲聊,甚至玩一会,也是十分好的主意。F 公司的程序员就特别喜欢一种球类游戏。 让我们想象一个在笛卡尔坐标系平面上玩的游戏。玩家坐落在点 $(0,0)$ 上,选择任意一个方向,扔出球。飞了一会儿的球在距离原 ......
Top-level await 新特性(ERROR: Top-level await is not available in the configured target environment (“chrome87”.....})
Top-level await 新特性 「ECMAScript」提案 Top-level await 由 Myles Borins 提出,它可以让你在模块的最高层中使用 await 操作符。在这之前,你只能通过在 async 函数或 async generators 中使用 await 操作符。To ......
Android studio 安装应用出现 The application could not be installed: INSTALL_FAILED_USER_RESTRICTED 错误
### 错误详情 ``` Installation did not succeed. The application could not be installed: INSTALL_FAILED_USER_RESTRICTED List of apks: [0] '/Users/topjoy/git ......
Unexpected EOF read on the socket问题研究及解决
背景 在图片上传的过程中,后台总是会看到很多这种异常的报错,对于客户端而言是一个超时中断的报错。 org.apache.tomcat.util.http.fileupload.impl.IOFileUploadException: Processing of multipart/form-data ......
ptyhon: remame file using Prefix and suffix
# 创建测试文件 #for i in range(0, 10): #f = open('test/' + str(i) + '.txt', 'a+') #f.close() path = input("请输入路径:") print("该文件夹中的所有文件有:") temp_file_name = [ ......
The Deep Learning Compiler: A Comprehensive Survey
The Deep Learning Compiler: A Comprehensive Survey - [AI编译器综述](#ai编译器综述) - [摘要](#摘要) - [介绍](#介绍) - [背景](#背景) - [深度学习框架](#深度学习框架) - [深度学习硬件](#深度学习硬件) - ......
CodeForces 1508C Complete the MST
[洛谷传送门](https://www.luogu.com.cn/problem/CF1508C "洛谷传送门") [AtCoder 传送门](https://codeforces.com/problemset/problem/1508/C "AtCoder 传送门") 比较需要观察的题。 设 $v ......
Maximum Sum
Maximum Sum time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given an array a1,a2 ......
anolis 8.8 (CentOS 8) yum update error: Problem 1: package mod_ssl-1:2.4.37-56.0.1.module+an8.8.0+11061+87142f8c.6.x86_64 requires , but none of the providers can be installed
#yum update error message: Problem 1: package mod_ssl-1:2.4.37-56.0.1.module+an8.8.0+11061+87142f8c.6.x86_64 requires httpd = 2.4.37-56.0.1.module+an8 ......
js/ts文件中,导入i18n报错:Must be called at the top of a `setup` function
import { useI18n } from 'vue-i18n'; const { t } = useI18n(); 会在非组件情况下报错: 此时我们需要将上述导入方式改为: import i18n from '@/lang/i18n';//@/lang/i18n为语言包位置 const { t ......
mac解决pycharm运行报错NotOpenSSLWarning: urllib3 v2.0 only supports OpenSSL 1.1.1+, currently the 'ssl' module is compiled
mac解决pycharm运行报错NotOpenSSLWarning: urllib3 v2.0 only supports OpenSSL 1.1.1+, currently the 'ssl' module is compiled 第一步:卸载 urllib3 pip3 uninstall url ......
CodeForces 1847F The Boss's Identity
[洛谷传送门](https://www.luogu.com.cn/problem/CF1847F "洛谷传送门") [CF 传送门](https://codeforces.com/problemset/problem/1847/F "CF 传送门") 我们首先观察 $a$ 的形态。令题面中给出的 $ ......
QNX-9—QNX官网文档翻译—Resource Managers—The resource manager library
注:本文翻译自QNX Software Development Platform --> Programming --> Getting Started with QNX Neutrino --> Resource Managershttp://www.qnx.com/developers/docs ......
Restart the journey
在开始新的旅途之前,明确一些事情。 做题方法论比学习方法论重要。 如何解题: 泛化模型,寻找特殊性质。 性质的发现:共性,特殊性,结构。 考虑限制的松紧,为什么只在这个情况下能做。 规约到之前遇见过的问题,需要对基本模型的认知。 从简单的,边界的情况入手。 利用几何/代数直观。 考虑 “剖面”。 枚 ......
【论文解析】EJOR 2011 A clustering procedure for reducing the number of representative solutions in the Pareto Front of multiobjective optimization problems
> 论文名称:A clustering procedure for reducing the number of representative solutions in the Pareto Front of multiobjective optimization problems ### 动机 假 ......
Can't import the named export 'inject' from non EcmaScript module (only default export is available)
最近在开发一个electron应用,需要用到ssh功能。 经过挑选,最终使用的是node-ssh这个包。 然而,使用的过程并不顺利,执行npm run electron:serve运行出错,报错信息如下(仅截取部分): error in ./node_modules/node-ssh/lib/esm ......
P6545 [CEOI2014] The Wall 总结记录--zhengjun
[link](https://www.luogu.com.cn/problem/P6545) 思维好题。 - 找到结论,即包住所有点的充要条件 两次最短路的思想确实很妙。 > 结论:找到 $(0,0)$ 到每个标记方格左上角的最短路,那么一定存在包住这些路径的最优解。 证明考虑反证,比较好证的。 # ......
CentOS grub引导损坏 Minimal BASH-like line editing is supported.For the first word.TAB lists possible command completions.Anywhere else TAB lists possible deyice or file completions.
这是 GRUB boot loader 的命令行提示。它可能出现在以下情况中: 系统没有正确引导 启动项配置不正确 硬盘分区有问题 GRUB 配置有误等 为了解决这个问题,你需要做的是恢复 GRUB。以下是一般步骤,适用于大多数 Linux 发行版(如 Ubuntu): 启动 Live CD - 首 ......
[LeetCode] 2024. Maximize the Confusion of an Exam
A teacher is writing a test with n true/false questions, with 'T' denoting true and 'F' denoting false. He wants to confuse the students by maximizing ......
this version of the Java Runtime only recognizes class file versions up to 55.0
问题: 运行SpringBoot demo时报错: this version of the Java Runtime only recognizes class file versions up to 55.0 at 原因: 编译版本和运行版本不一致,具体原因是编译版本高于运行版本,SpringBo ......
Logistic Regression and its Maximum Likelihood Estimation
# 从 Linear Regression 到 Logistic Regression 给定二维样本数据集 $D = \left\{ (\vec{x}_{1}, y_{1}), (\vec{x}_{2}, y_{2}), \ldots, (\vec{x}_{n}, y_{n}) \right\}$, ......
How To Fix the ERR_OSSL_EVP_UNSUPPORTED Error in Node.js
Fix the ERR_OSSL_EVP_UNSUPPORTED Error There are two ways to fix the ERR_OSSL_EVP_UNSUPPORTED error: Upgrade Node.js by downloading and installing the ......