2013年7月8日
USCAO section 4.1 Fence Loops（最短路，最小环，5级）
摘要： Fence LoopsThe fences that surround Farmer Brown's collection of pastures have gotten out of control. They are made up of straight segments from 1 through 200 feet long that join together only at their endpoints though sometimes more than two fences join together at a given endpoint. The result 阅读全文
posted @ 2013-07-08 19:32 剑不飞 阅读(208) 评论(0) 推荐(0)