PuzzleUp 2010 (6) Sixteen Numbers - 拼圖

時限：2010/08/19（四）19:00～08/25（三）18:59



答案可上傳５次，但每改１次扣２０分（基本分為１００分）
在比賽期間內可隨時回答，但只有在時限內回答者有額外加分

◆Sixteen Numbers


You are going to place all numbers from 1 to 16 on a 4x4 chessboard such that
all consecutive number pairs (1-2, 2-3, ..., 15-16) will be on the
neighboring cells (left-right-top-down).

In how many different ways can this be done?

If the question was asked for a 2x2 chessboard, the answer would be 8.

你要把1到16的每個數字分別填入一個4*4的棋盤

並且要讓所有連續的數對都在棋盤上相鄰(1要跟2相鄰 2要跟3相鄰 ...15要跟16相鄰)

請問共幾種方法?

如果這題改成2*2的棋盤 那麼答案是8種.

==============================================================================






我猜3*3的話答案是40種 4*4答案是別鬧了 這怎麼可能告訴你

--