[USACO5.5]矩形周长Picture

Description: 给你n个矩形,求它们周长的并 Hint: $n \le 5000$ Solution: 分两种情况算,横的和竖的 横的就用2\ 覆盖区间段数\ 长度 竖的相邻扫描线相减就行 cpp include include include include include includ
posted @ 2019-03-28 17:18  cloud_9  阅读(143)  评论(0)  编辑  收藏  举报