| Problem | Solutions | Attempts | First Solved |
|---|---|---|---|
| A. Very Hard! | 701 | 718 | 0:00:31 |
| B. Right to Vote | 636 | 685 | 0:02:14 |
| C. In Search of a Friend | 293 | 396 | 0:06:59 |
| D. Time to Prove | 26 | 148 | 0:21:36 |
| E. Help! | 234 | 306 | 0:11:35 |
| F. Mission Top Ten | 128 | 180 | 0:24:08 |
| G. Maximum Among Divisors | 254 | 268 | 0:22:04 |
