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original poster: isee

[组合] 沿数轴前进,拾或放硬币

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zhcosin posted 2017-9-7 12:15
回复 20# kuing
是哒

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zhcosin posted 2017-9-7 13:33
回复 20# kuing
严格来说,你的结果是对的,因为题目的操作的a步骤中,包含了翻转硬币后前进一步的动作。

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