摘要: HDU 5877 Weak Pair(弱点对) Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others) Description 题目描述 You are given a rooted tre 阅读全文
posted @ 2016-09-18 23:50 Simon_X 阅读(429) 评论(0) 推荐(0)