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为什么5个硬币的情形翻转2次不是最优的?感觉答案有问题……

Posted by MIRKING at 2008-05-24 17:38:49 on Problem 3210 and last updated at 2008-05-24 17:46:10
5个硬币不计重复有3种情况:
xxxxx
xxxxo
xxxoo
无论对于哪种情况,只翻转2次必然可以使之全为正面或反面。

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