| 题目编号 | 标题 | 来源/分类 | 解决 | 提交 | |
| A | Cipher | Central Europe 1995 | 2 | 36 | |
| B | Paths on a Grid | Ulm Local 2002 | 18 | 110 | |
| C | Trees Made to Order | East Central North America 2001 | 1 | 1 | |
| D | Number Sequence | Tehran 2002, First Iran Nationwide Internet Programming Contest | 3 | 30 | |
| E | Instant Complexity | Southwestern European Regional Contest 1997 | 1 | 2 | |
| F | Three powers | Waterloo local 2004.06.12 | 1 | 1 |