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As a traditional event in the past years, join the IOI 2026 Prediction Game!
比赛归档: IOI 2009 - Bulgaria
| 比赛归档 | #（赛） | #（题） | |
|---|---|---|---|
| Day 1 | A B C D | 4 | |
| Day 2 | A B C D | 4 |
As a traditional event in the past years, join the IOI 2026 Prediction Game!
| 比赛归档 | #（赛） | #（题） | |
|---|---|---|---|
| Day 1 | A B C D | 4 | |
| Day 2 | A B C D | 4 |