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Problem 1001
关于包围圈
gunpowder
| 2017-08-05 16:14:17
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请问包围圈是否至少需要有3个点 如 1 1 1 2 1 0 1 2 是否合法 1 1 1 3 1 0 1 2 3 1 是否答案为0?
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