## Problems
- [Dynamic connectivity contest](http://codeforces.com/gym/100551)
- [Urban Geography](http://acm.timus.ru/problem.aspx?space=1&num=2055) [^1]

## See also
- [Union-find data structure]()
- [Link-cut tree]()

## External links
- [Dynamic connectivity problem](http://codeforces.com/blog/entry/15296)

[^1]: <http://codeforces.com/blog/entry/18944>