HDU 3887 Counting Offspring
摘要：
Counting Offspring Problem Description You are given a tree, it’s root is p, and the node is numbered from 1 to n. Now define f(i) as the number of no 阅读全文
posted @ 2016-08-29 13:19 焰 阅读(140) 评论(0) 推荐(0) 编辑