A brain teaser question (转载)# BrainTeaser - 大脑工作室
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【 以下文字转载自 Quant 讨论区 】
发信人: JetMax (JetMax), 信区: Quant
标 题: A brain teaser question
发信站: BBS 未名空间站 (Sun Dec 16 14:03:40 2007)
Given a grid, each square in the grid has a light bulb and a button.
Everytime you press the button in a square, the light in this square and all
those in the immediately directly adjacent squares (i.e., the up, down,
left, and right squares; note that diagnally adjacent squares do not count)
are turned off. All lights are on initially.
Then question is: what is the minim
发信人: JetMax (JetMax), 信区: Quant
标 题: A brain teaser question
发信站: BBS 未名空间站 (Sun Dec 16 14:03:40 2007)
Given a grid, each square in the grid has a light bulb and a button.
Everytime you press the button in a square, the light in this square and all
those in the immediately directly adjacent squares (i.e., the up, down,
left, and right squares; note that diagnally adjacent squares do not count)
are turned off. All lights are on initially.
Then question is: what is the minim
