shadow the dog and
CF1152F2 Neko Rules the Catniverse (Large Version) 题解
发现挨位考虑填哪个不太现实，考虑值域。 令 $dp_{i,j,st}$ 表示考虑到 $i$，此时序列长度为 $j$，$i-m$ 到 $i-1$ 填空状态为 $st$ 的方案数，考虑选/不选数即可： $dp_{i,j,st}\times (\text{popcount}(st)+1)\to dp_{i ......
arcgis注册postgresql失败。postgres be sure the databse client software is installed and configured correct
解决： 将PostgreSQL\9.1\bin目录下的Libpq.dll,Libeay32.dll, Libintl-8.dll, Ssleay32.dll复制一份放在ArcGIS Server安装目录的Server\bin***意：这里拷贝的文件需要都是64位的。 重启arcgis server服 ......
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.
###问题提示： ` NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and runn ......
【863】Calculate records based on the same value
Suppose we have a dataframe, it has a column of "country". It lists different names of country's names, and for one country maybe it has multiple reco ......
Codeforces 1621H - Trains and Airplanes
这能 3500？ 对于一组在 $u$ 上的询问，考虑每种线路 $x$，假设 $1\to u$ 路径上线路 $x$ 的长度为 $len$，那么不难发现收罚款的次数只有两种可能：$\lfloor\dfrac{len}{T}\rfloor$ 或者 $\lfloor\dfrac{len}{T}\rfloor ......
Perkins Engines: Reliable Power in Harsh Environments and High-Strength Operations
Perkins Engines: Reliable Power in Harsh Environments and High-Strength OperationsHello everyone! Today I would like to share with you a powerful engi ......
发布-订阅（Publish-and-Subscribe）模型
发布-订阅（Publish-and-Subscribe）模型是一种消息传递模式，用于在软件系统中实现异步通信和解耦。它基于发布者（发布消息的实体）和订阅者（接收和处理消息的实体）之间的解耦原则。 在发布-订阅模型中，发布者和订阅者之间不直接交互，而是通过一个称为消息代理或消息中间件的组件来进行通信。 ......
CF1842G Tenzing and Random Operations 思考
借鉴了一下 namelessgugugu 的想法，妙妙题。 [link](https://www.luogu.com.cn/blog/namelessgugugu/solution-cf1842g) 这个神奇工具的构造确实挺妙的，非常好的思维题，在此记录一下 ### 代码 ```cpp #inclu ......
cpp generate uuid via rand() and test speed which is 4 times+ faster than libuuid
// main.cpp #include <algorithm> #include <chrono> #include <cstdio> #include <cstdlib> #include <cstdint> #include <ctime> #include <fstream> #includ ......
Linux系统Apache报错httpd: Could not reliably determine the server's fully qualified domain name, using localhost.localdomain. Set the 'ServerName' directive globally to suppress this message
解决办法： 在配置文件中加一句ServerName localhost:端口号 # echo "ServerName localhost:8068" >> /etc/httpd/conf/httpd.conf 重启Apache即可解决。 ......
HTTP/2 stream 1 was not closed cleanly before end of the underlying stream解决
通过git clone 文件时报错 HTTP/2 stream 1 was not closed cleanly before end of the underlying stream 解决： git config --global http.versioin HTTP/1.1 重新git clon ......
Codeforces 1172F - Nauuo and Bug
是 Ynoi 捏。 建一棵线段树，线段树上每个节点维护一个长度为 $len$ 的 DP 数组 $f_i$ 表示 $v$ 最少需要多少才能使得从左往右将 $v$ 与区间中的数进行图中的相加操作后会减掉至少 $i$ 次 $p$。 如果我们能预处理出 $f_i$，那么查询是容易的，直接找到对应的区间然后 ......
升级EF7连接SQL server出错SqlException: A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - 证书链是由不受信任的颁发机构颁发的。)
今天把项目里的Microsoft.EntityFrameworkCore.SqlServer和Microsoft.EntityFrameworkCore.Tools从6.0.6升级到了最新的7.0.9。一运行程序出错了。 ![img](https://img2023.cnblogs.com/blog ......
Linux系统Apache添加监听端口后无法启动服务并报错：Job for httpd.service failed because the control process exited with error code. See "systemctl status httpd.service" and "journalctl -xeu httpd.service" for details.
导言：这是SE Linux安全机制导致的。 解决方法： 1.查看当前httpd端口 # semanage port -l|grep http 2.将对应端口加入SE Linux，以8068为例 # semanage port -a -t http_port_t -p tcp 8068 3.再次查看 ......
linux SSH client and terminal termius
介绍一款SSH终端神器，termius 优美的界面，高效的性能，免费版本足够我们使用。支持 mac , windows 双平台！ 官网：https://www.termius.com/ 下载地址：https://termius.com/download/ 主界面：  from table_a where my_date between '20230715' and '20230717'; ``` 上面的SQL我们发现只统计了20230715、20230716的数据，没有17日的数据。难道BETWEEN AND不包含边 ......
解决 Https 站点请求 Http 接口服务后报 the content must be served over HTTPS 错误的问题
之前将自己所有的 `Http` 站点全部更新为 `Https` 站点，但是在请求后台接口服务的时候还是 `Http` 请求，导致部署之后，直接在控制台报 `This request has been blocked; the content must be served over HTTPS;` 的... ......
"Management" by Stephen P. Robbins and Mary Coulter现代管理科学理论
现代管理科学理论： **Major Approaches to Management** 3000 BC – 1776: Early Management 1911 – 1947 Late: Classical Approach 1700s – 1950s: Behavioral Approach ......