urbanization problem china in
洛谷 P9061 [Ynoi2002] Optimal Ordered Problem Solver
洛谷传送门 QOJ 传送门 考虑操作了若干次，所有点一定分布在一个自左上到右下的阶梯上或者在这个阶梯的右（上）侧。此处借用 H_W_Y 的一张图： 考虑如何计算答案。对于一次询问 \((X, Y)\)，如果它在阶梯左下方不用管它，否则考虑容斥，答案即为 \(x \ge X, y \ge Y\) 的点 ......
CF1910I Inverse Problems
题目链接：https://codeforces.com/contest/1910/problem/I 题意 有一个 \(n\) 个字符的字符串 \(S\)，你需要不断从中删除一个长度为 \(k\) 的子串，直到串的长度变为 \(n \mathbin{\rm mod} k\)，求能够产生的字典序最小的 ......
Codeforces 1909I - Short Permutation Problem
介绍一下 k 老师教我的容斥做法。 考虑固定 \(m\) 对所有 \(k\) 求答案。先考虑 \(k=n-1\) 怎么做。我们将所有元素按照 \(\min(i,m-i)\) 为第一关键字，\(-i\) 为第二关键字从小到大插入，即按照 \(n,n-1,n-2,\cdots,m+1,m,1,m-1,2 ......
【MySQL优化】小表驱动大表 IN和EXISTS的合理利用
//假设一个for循环 for($i = 0; $i < 10000; $i++) { for ($j = 0; $i < 50; $j++) { } } // 更优 for($i = 0; $i < 50; $i++) { for ($j = 0; $i < 10000; $j++) { } } ......
SciTech-BigDataAIML-Tensorflow-Introduction to modules, layers, and models
Introduction to modules, layers, and models Model: To do machine learning in TensorFlow, you are likely to need to define, save, and restore a model. ......
SciTech-BigDataAIML-Tensorflow-Introduction to graphs and tf.function
Graphs are data structures that contain: a set of tf.Operation objects, which representing units of computation; and tf.Tensor objects, which represen ......
如何在无窗口模式下运行GPG——如何在命令行模式下使用gpg生成秘钥：How to make gpg prompt for passphrase on CLI——GPG prompt for password in command line
参考： Unable to generate a key with GnuPG (agent_genkey failed: No such file or directory) ["No such file or directory" when generating a gpg key](https ......
SciTech-BigDataAIML-Tensorflow-Introduction to Gradients and Automatic Differentiation
In this guide, you will explore ways to compute gradients with TensorFlow, especially in eager execution. Automatic Differentiation and Gradients Auto ......
D. Mathematical Problem
原题链接 题解链接 code #include<bits/stdc++.h> using namespace std; int main() { int t; cin>>t; while(t--) { int n; cin>>n; if(n==1) { puts("1"); continue; } ......
Problem I Like
\(\LARGE{\frac{\frac{\int_{0}^{+\infty}e^{-s}s^5ds }{2} +\frac{\int_{0}^{+\infty}e^{-\frac{t^2}{2}}dt}{\int_{0}^{+\infty}\sin t^2dt} (\frac{\sum_{n=0} ......
SciTech-BigDataAIML-Tensorflow-Introduction to Tensors
https://tensorflow.google.cn/guide/tensor Introduction to Tensors Tensors are multi-dimensional arrays with a uniform type (called a dtype). tf.dtypes ......
利用强化学习算法解释人类脑对高维状态的抽象表示：how humans can map high-dimensional sensory inputs in actions
论文： 《Using deep reinforcement learning to reveal how the brain encodes abstract state-space representations in high-dimensional environments》 地址： http ......
CF1916D Mathematical Problem
思路 很不错的人类智慧题。 拿到以后，完全没有思路，看到数据范围，感觉是什么 \(n^2\log n\) 的逆天做法，但是又完全没思路，看后面的题感觉没希望，就在这道题死磕。 先打了个暴力程序，发现平方数太多，没什么规律，就拿了个 map 统计一下那些出现数字方案拥有的平方数比较多 程序如下： #i ......
appium报错DeprecationWarning: desired_capabilities argument is deprecated and will be removed in future versions. Use options instead.
不再用desired_capabilities，用options代替 原来的 desired_caps = { "platformName": "ios", "platformVersion": "11.4", "deviceName": "iPhone 6 Plus", "noReset": Tr ......
上海 110 报警后，警察出警时间规定 All In One
上海 110 报警后，警察出警时间规定 All In One
公安部《110报警服务工作规范化标准》
处警人员在接到处警指令后要做到快速反应。 凡危及公民人身、财产安全的重大、紧急报警、求助，在市区，必须5分钟内到达现场；在郊区，必须10分钟内到达现场。
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Applied Statistics - 应用统计学习 - numpy array交换两行 ？ How to Swap Two Rows in a NumPy Array (With Example)
https://www.statology.org/qualitative-vs-quantitative-variables/ https://www.statology.org/numpy-swap-rows/ How to Swap Two Rows in a NumPy Array (Wit ......
多组学数据整合 | Multifaceted SOX2-chromatin interaction underpins pluripotency progression in early embryos
最近这篇Science文章不错，Multifaceted SOX2-chromatin interaction underpins pluripotency progression in early embryos - 15 December 2023 需要复刻里面的一些思路、解法和可视化。 复刻【 ......
BigDataAIML-Kaggle-How to Calculate Principal Component Analysis (PCA) from Scratch in Python
How to Calculate Principal Component Analysis (PCA) from Scratch in Python https://www.kaggle.com/code/aurbcd/pca-using-numpy-from-scratch PCA using N ......
【HBase】:Could not start ZK with 3 ZK servers in local mode deployment.
Could not start ZK with 3 ZK servers in local mode deployment. Aborting as clients (e.g. shell) will not be able to find this ZK quorum. 控制台报错： 这个错误表明 ......
Only the invariant culture is supported in globalization-invariant mode. See https://aka.ms/GlobalizationInvariantMode for more information
错误信息：全球化不变模式只支持不变文化。看见https://aka.ms/GlobalizationInvariantMode了解更多信息 修改引用配置即可：<InvariantGlobalization>true</InvariantGlobalization> 改为false Only the ......
使用idea执行testng单元测试时，控制台报 no tests found in the class xxx 异常
我遇到的情况是，使用idea在一个测试类中进行测试的时候，前一个单元测试用例还正常执行，到下一个就报了no test found in the class xxx 原因暂时未知，但目前来看是idea的问题，可以尝试点击File->Invalidate Caches...然后在弹窗点击Invalida ......
.in'ig.status: error: cannot find input file: `
交叉编译 libaac 库，源码下载地址 https://sourceforge.net/projects/faac/ 解压 unzip faac-1.28.zip cd faac-1.28.zip 执行./bootstrap 时出现如下错误 # ./bootstrap -bash: ./boots ......
Research in Computational Molecular Biology : 18th Annual International Conference, RECOMB 2014, Pittsburgh, PA, USA, April 2-5, 2014, Proceedings | Clc
Research in Computational Molecular Biology : 18th Annual International Conference, RECOMB 2014, Pittsburgh, PA, USA, April 2-5, 2014, Proceedings | C ......
cocoaPod 执行 pod install 时出现警告：The `XX [Release]` target overrides the `CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES` build setting defined in `xcconfig'.
最近执行 Pod install 安装命令时，控制台输出警告信息： [!] The `XXX [Debug]` target overrides the `CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES` build setting def ......
APaaS 企业级低代码平台 All In One
APaaS 企业级低代码平台 All In One
Application Platform as a Service / 应用程序平台即服务
PaaS
Platform as a Service / 平台即服务
FaaS
Function as a Service / 函数即服务
ServerL... ......
Shell - Input and run multiple lines in terminal
zzh@ZZHPC:/zdata/Github/zimplebank$ ( > ls -1 db/migration/*.up.sql | while read file > do > echo $file > done > ) db/migration/000000_init_schema.up. ......
D - Money in Hand
有点像完全背包，但也不是因为有数量的限制，是01背包的变式，每个硬币选与不选，最后看看能不能达到x。 #include<bits/stdc++.h> using namespace std; int t[100],w[100],dp[10005]; int main(){ int n,m; cin> ......
Shape search in Visio doesn't work
from http://visguy.com/vgforum/index.php?topic=9021.0 This problem is as old as Visio itself I guess :- Visio shape search depends on Windows search ( ......
【五期李伟平】CCF-A（TMC'22）Enabling Long-Term Cooperation in Cross-Silo Federated Learning: A Repeated Game Perspective
Zhang, Ning , Q. Ma , and X. Chen . "Enabling Long-Term Cooperation in Cross-Silo Federated Learning: A Repeated Game Perspective." (2022). 针对重复执行跨筒仓联 ......