| Problem Name | Online Judge | Contest | Difficulty Level | |
|---|---|---|---|---|
| 1 | Potentiometers | UVA | 2 | |
| 2 | Race Against Time | SPOJ | 2 | |
| 3 | K-query II | SPOJ | 3 | |
| 4 | Array Transformer | UVA | 4 | |
| 5 | DZY Loves Fibonacci Numbers | Codeforces | Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) | 6 |
| 6 | Lucky Array | Codeforces | Codeforces Beta Round #91 (Div. 1 Only) | 7 |