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是不是 m*(k!) 个状态更加自然? 这样时间复杂度是O( m*(k!) ) 空间复杂度是 O(mk)

Posted by bobobo at 2009-10-03 01:37:45 on Problem 2978
比 O( m*(2^k)*k ) 易于理解 且状态数更少 赫赫

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