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重述一下题目

Posted by heavyshower at 2020-11-03 20:22:06 on Problem 3134
感觉题目说得有点不够清楚,我来重述一下题意。起始有一个集合{1} 和起始值 s = 1, 每次从集合中选择一个数,与 s 作加或减运算,结果必须是正数,然后把 s 改写成该数,并向集合中加入 s。问要得到 n 最少需要几步。

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