HDU6185 Covering【矩陣快速冪】
To protect boys and girls from getting hurt when playing happily on the playground, rich boy Bob decided to cover the playground using his carpets.
Meanwhile, Bob is a mean boy, so he acquired that his carpets can not overlap one cell twice or more.
He has infinite carpets with sizes of1×2and2×1, and the size of the playground is4
Can you tell Bob the total number of schemes where the carpets can cover the playground completely without overlapping?
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