---
categories: Graph algorithms
---

## Problems
- [Erdős Numbers](https://open.kattis.com/problems/erdosnumbers)
- [Erratic Ants](https://open.kattis.com/problems/erraticants)
- [Dominoes 2](https://open.kattis.com/problems/dominoes2)
- [Beehives](https://open.kattis.com/problems/beehives2)

## External links
- [0-1 BFS [Tutorial]](http://codeforces.com/blog/entry/22276)