(China) National Olympiad in Informatics 2017
Problems
| Integer | 5 / 12 | 2400 | |
| Earthworms queue | 4 / 4 | 2000 | |
| Pool | 8 / 20 | 2700 | |
| Game | 4 / 4 | 2200 | |
| Vegetables | 3 / 6 | 2400 |
| Integer | 5 / 12 | 2400 | |
| Earthworms queue | 4 / 4 | 2000 | |
| Pool | 8 / 20 | 2700 | |
| Game | 4 / 4 | 2200 | |
| Vegetables | 3 / 6 | 2400 |