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不可能

guwangyan(瞎说话)

HTHTTHH 到 HTHTHTT

n=7个硬币
k=3 需要3个反面
t=Total翻面次数

如果你需要达成结果：需要翻t×2==k*奇数+（n-k)*偶数
等式左面为偶数右面为奇数
所以不成立

(#11451442@0)
Last Updated: 2018-3-29
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