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比赛归档: National Olympiad in Informatics 2020
| 比赛归档 | #（赛） | #（题） | |
|---|---|---|---|
| (Singapore) National Olympiad in Informatics 2020 Preliminary Contest | A B C | 3 | |
| (Singapore) National Olympiad in Informatics 2020 Qualification | A B C D | 4 | |
| NOI 2020 Final Contest | A B C D E | 5 |