- my leetcode, only taking contests now.
- my codeforces, mainly practice on codeforces.
- google kickstart, for later
- Algorithms目录下存放算法&数据结构 Algorithms & Data Structures
- 语言相关笔记，以及模板在notes目录下
- 不同网站oj的刷题存在相应网站域名命名的文件夹下
- oi wiki
- topcoder: Competitive Programming Tutorials
- E-Maxx Algorithms in English
- web.ntnu.edu.tw/~algo
- labuladong 的算法教程
- search "Gym algorithm" in codeforces
