(China) National Olympiad in Informatics 2017
Problems
| Integer | 4 / 9 | 2400 | |
| Earthworms queue | 3 / 3 | 2000 | |
| Pool | 7 / 14 | 2700 | |
| Game | 3 / 3 | 2200 | |
| Vegetables | 2 / 4 | 2400 |
| Integer | 4 / 9 | 2400 | |
| Earthworms queue | 3 / 3 | 2000 | |
| Pool | 7 / 14 | 2700 | |
| Game | 3 / 3 | 2200 | |
| Vegetables | 2 / 4 | 2400 |