I'd like to share my reusable c++ libs I've been using for codeforce contests.
https://github.com/duc0/ContestNeko
Some existing utilities:
- Binary search
- Lowest common ancestor
- Binary Indexed Tree
- Segment Tree
- Heavy light decomposition
- Convex hull
- Prime generator
- Simple matrix algebra
- ...
You are free to use it in contests (subject to codeforces's policy I guess) and any contributions are more than welcome!
