摘要: 题目链接: "POJ 3090" Description A lattice point $(x, y)$ in the first quadrant ($x$ and $y$ are integers greater than or equal to $0$), other than the or 阅读全文
posted @ 2019-09-19 19:54 wuli涛涛 阅读(218) 评论(0) 推荐(0) 编辑