oi

🌟 Wiki of OI / ICPC for everyone. （某大型游戏线上攻略，内含炫酷算术魔法）

Hydro - Next generation high performance online-judge platform - 新一代高效强大的信息学在线测评系统 (a.k.a. vj5)

算法竞赛课件分享

The IDE for competitive programming 🎉 | Fetch, Code, Compile, Run, Check, Submit 🚀

OI / ACM-ICPC essays and learning materials

我的信息学竞赛讲课课件

🌟复习考研的那些事儿(清华912考研)～～

A database for Chinese OI participants.

🌺Algorithm papers, coursewares, documents, notes and other materials are constantly being updated.

为了 OI 比赛而生的基于 Lemon + LemonPlus 的轻量评测系统 | 三大桌面系统支持

我的 OI 课件

A problem list for luogu OJ.

High-Performance Data Generator for competitive programming (Olympiad in Informatics) use.

Jiangnan Online Judge

🔖一款基于C++的OI/ACM比赛出题解题辅助工具⭐

🍭lzyrapx 's algorithmic library. Some templates for ACMer, OIer, Algorithm enthusiast.

The answers for luogu.com.cn for you in different languages.

A simple judging environment for Olympiad in Informatics

📱 Practice algorithms anytime, anywhere | Native Android IDE for Competitive Programming | C++/Java/Python support | ✨ Syntax highlighting, code completion & local execution ⚡