摘要: There is a tree with nn nodes. For each node, there is an integer value a_ia​i​​, (1 \le a_i \le 1,000,000,0001≤a​i​​≤1,000,000,000 for 1 \le i \le n1 阅读全文
posted @ 2017-09-16 20:37 mxzf0213 阅读(671) 评论(0) 推荐(0) 编辑