摘要：
A-maze-ing 题目传送门：滴滴滴 Long long age, a wise but barbaric king made a plan to convert the arena to a maze so that he could get pleasure from watching hi 阅读全文
摘要：
Constructing Roads Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 26772 Accepted: 11764 Description There are N villages, which are number 阅读全文