| Problem Name | Online Judge | Year | Contest | Difficulty Level | |
|---|---|---|---|---|---|
| 1 | Dijkstra? | Codeforces | Codeforces Alpha Round #20 (Codeforces format) | 1 | |
| 2 | Labyrinth | TJU | 1 | ||
| 3 | The Postal Worker Rings Once | UVA | 1 | ||
| 4 | Distinct Subsequences | SPOJ | 1 | ||
| 5 | Tobo or not Tobo | Live Archive | 2008 | Africa/Middle East - Arab and North Africa | 2 |
| 6 | XYZZY | UVA | 2 | ||
| 7 | Pick up sticks | UVA | 2 | ||
| 8 | Full Tank? | UVA | 3 |