| Problem | Solutions | Attempts | First Solved |
|---|---|---|---|
| A. Robot Restaurant | 0 | 0 | Unsolved |
| B. Sum of Prime Numbers | 4 | 5 | 0:18:32 |
| C. Surveillance | 0 | 0 | Unsolved |
| D. Palindrome | 1 | 4 | 1:37:12 |
| E. House of cards | 5 | 8 | 0:40:51 |
| Problem | Solutions | Attempts | First Solved |
|---|---|---|---|
| A. Robot Restaurant | 0 | 0 | Unsolved |
| B. Sum of Prime Numbers | 4 | 5 | 0:18:32 |
| C. Surveillance | 0 | 0 | Unsolved |
| D. Palindrome | 1 | 4 | 1:37:12 |
| E. House of cards | 5 | 8 | 0:40:51 |
