Technical writing and random thoughts.

Study notes of Olympiad in Informatics.

An educational and research network.

An experimental network.

A database for Chinese OI participants.

Online judge system for Shijiazhuang No.2 High School.

A pure, modern and simple theme for Gridea.

A pure, modern and simple theme for Hexo.

Blog of @Showfom.

Luogu Remote Judge module for Universal Online Judge.

A one-click blogging solution for OIers.

A tool for batch submitting URLs to the Internet Archive.

A rating badge for Codeforces.

A rating badge for AtCoder.