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以下是一个大佬的总结Authorlcy注明出处，摘自 https://www.cnblogs.com/chaosheng/archive/2012/01/26/2329583.html(1) n条直线最多分平面问题 题目大致如:n条直线，最多可以把平面分为多少个区域。 析:可能你以前就见过这题目，这充其量是一道初中的思考题。但一个类型的题目还是从简单的入手，才容易发现规律。当有n-1条...

POJ-1979There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From a tile, he can move to one of four adjacent tiles. B...