Passwords are a common tool in human society for protecting personal garbage. Some of our friends have lost access to their financial accounts or even their Human Qualification Certificates by exposin

When I was using Arch Linux, one of my favorite packages was snap-pac, which works elegantly with pacman to create snapshots before and after any update. 当我在用 Arch Linux 的时候，我最喜欢的软件包之一是 snap-pac，它可以和

ProblemLink of Problem SolutionThis is an interesting constructive problem. Step 1: Analysis Illegal SituationFirst we need to figure out in what kind of situation, it is an impossible task. Our targe

Intro: Get LCS (Longest Common Sunsequence) in O(NM)Let me beriefly explain the common way to get LCS in textbook. Let A and B are strings, consider using dynamic programming, dp[i][j] represents LCS

What is 3D to 2D Rendering?3D to 2D rendering is the process of automatically converting three-dimensional models into two-dimensional images using a computer. It’s a fundamental technique in computer

Introduction: Why?It seems you’re describing a world many of us can only dream of – one free from the daily deluge of digital communication. Imagine the luxury of a life unburdened by countless logins

Problem 题面Give a number $N$, find the largest number $k$ satisfy the following requirements smaller than $N$: Sum of all digits of $k$ is prime Each digits of $k$ is larger than or equals to the pre

Why We Need an FTQC Resource EstimatorOn NISQ (Noisy Intermediate-scale Quantum) devices, measuring the resource cost of an algorithm is very intuitive. By counting the number of gates the algorithm

为什么需要FTQC资源计数器在NISQ(Noisy Intermediate-scale Quantum)设备上，衡量一个算法消耗的资源是非常直观的。通过算法使用的门的数量，物理比特的数量，电路的深度，物理硬件的各种错误率与保真度就可以大致的评估一个算法。但在FTQC(Fault Tolerant Quantum Computing)上事情却复杂一些。最关键的不同在于FTQC使用纠错码的方式通过设

Why You Need a Privacy-Focused Email Avoid Over-Centralization and Protect Your Real Identity: Most people currently use a setup consisting of a Gmail account plus a work or school email. Both are st