跳房子,埋炸彈。 - 拼圖

By Olga
at 2010-05-18T13:59
at 2010-05-18T13:59
Table of Contents
01 02 03 04 05 06 07 ..................41 42 43 44 45
一共有45個格子
跳格子的跳法必須是1~9只能各用一次,
ex:先跳一格,再跳兩格,再跳三格,...,最後跳九格,一定都會剛好落在第45格上。
證明或反證:
無論用任意方式在1~44格裡,埋下8顆炸彈,
都一定存在一種跳法可以安全跳到最後而不踩到炸彈。
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