摘要：
转载自：树的直径题目： Cow MarathonTime Limit: 2000MS Memory Limit: 30000K Total Submissions: 5325 Accepted: 2614 Case Time Limit: ... 阅读全文
摘要：
Problem Description lcy gives a hard puzzle to feng5166,lwg,JGShining and Ignatius: gave a and b,how to know the a^b.everybody objects to this BT prob 阅读全文