2016年10月11日
POJ 1655 Balancing Act （树状dp入门）
摘要： Description Consider a tree T with N (1 <= N <= 20,000) nodes numbered 1...N. Deleting any node from the tree yields a forest: a collection of one or 阅读全文
posted @ 2016-10-11 10:44 抓不住Jerry的Tom 阅读(375) 评论(0) 推荐(0)