点灯游戏是一个十分有趣的智力游戏:有一行N行N列的灯,开始时全部是灭的,当你点击其中一盏灯是他的上下左右(若存在的话)状态全部改变,现在要求你在限定的时间内以最少地步数,将全部的灯点亮.-Lighting game is a very interesting puzzle: there is a line N line N out the lights, start all off, when you click one of the lights of his upper and lower