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Victutu · 2019年10月31日

问一道题:NO.PZ2017092702000095

问题如下图:

    

选项:

A.

B.

C.

解释:


不是有两个值都超过了200么?

1 个答案

星星_品职助教 · 2019年11月01日

同学你好,

这是一个三期二叉树,所以题干中说的“at expiration”的时候指得是在第三期,考虑t=3时最后的四种情况即可,中间的不用考虑,加油。

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