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Category: IOI 2019 中国国家集训队训练赛（北大集训 2018）
| Category | #(Cont.) | #(Prob.) | |
|---|---|---|---|
| Day 1 | A B C | 3 | |
| Day 2 | A B C | 3 | |
| Day 3 | A B C | 3 | |
| Day 4 | A B C | 3 |