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2018年6月11日
洛谷P3038 牧草种植 [树链剖分]
摘要： 题目传送门 牧草种植 题目描述 Farmer John has N barren pastures (2 <= N <= 100,000) connected by N-1 bidirectional roads, such that there is exactly one path betwee 阅读全文
posted @ 2018-06-11 21:58 HolseLee 阅读(190) 评论(0) 推荐(0) 编辑