Solution to Gym-103081 Mentors (SWERC 2020 Problem F)
A combinatorics problem on tree. Read more
I Write $\sin(x)$ Not Tragedies
A combinatorics problem on tree. Read more
A very brief record on how to build and customize a Hexo blog, migrate from WordPress, and deploy it on Cloudflare Pages. Read more
Definitions, examples using Maybe and [], laws, and more. Read more
早年在 QQ 音乐收藏了600+首歌,后来因为各种原因转用Spotify。很想把歌单导出,但网路上现有的脚本基本都失效了,歌单转换平台 Soundiiz 也并不支持 QQ 音乐这个平台。 Read more
View the problem here. Read more
因为自己脑子有问题把系统搞炸了,在朋友帮助下进行了一个重装系统。简记过程。 Read more
莫队算法是基于分块思想的区间查询离线算法。带修莫队支持单点修改。树上莫队则是使用欧拉序将树序列化后,套用莫队算法。 Read more
Logica is a logic language for data manipulation developed by Google. It can be compiled into several SQL dialects, including BigQuery, SQLite and PostgreSQL. SQL, as a programming language, has several design flaws and suffers from bad readability especially when it comes to complex data queries. Logica has been aimed at mitigating those problems with SQL, and this post attempts to show that it does a quite good job in enhancing code readability and reusability, taking the SQL Murder Mystery as an example. Read more