|
本帖最后由 newkid 于 2012-9-13 03:23 编辑
#8
The squares are drawn on a sheet of paper as shown in the first figure. Your task is to cut the edges of the squares. What is the maximum number of edges that can be cut without having the sheet separated into two or more pieces?
在一张纸上画有正方形格子,如图1所示。你的任务是切割这些正方形的边。如果不想让这张纸被分成两片(或者更多),最多能够切几条边?
![]()
在例子中,被切割的边是24条。
这道题可能要从小图研究起,找出规律。肉眼看至少可以切60条(全部纵向或横向,不要切到底,2+4+6+8+10+10+8+6+4+2)
|
|