摘要：
题目： Problem Description Today is Ignatius' birthday. He invites a lot of friends. Now it's dinner time. Ignatius wants to know how many tables he need 阅读全文
摘要：
题目： Problem Description Mr Wang wants some boys to help him with a project. Because the project is rather complex, the more boys come, the better it w 阅读全文
摘要：
题目: Description The Head Elder of the tropical island of Lagrishan has a problem. A burst of foreign aid money was spent on extra roads between villag 阅读全文
摘要：
题目： Problem Description There are N villages, which are numbered from 1 to N, and you should build some roads such that every two villages can connect 阅读全文
摘要：
题目： Problem Description 上次Gardon的迷宫城堡小希玩了很久（见Problem B），现在她也想设计一个迷宫让Gardon来走。但是她设计迷宫的思路不一样，首先她认为所有的通道都应该是双向连通的，就是说如果有一个通道连通了房间A和B，那么既可以通过它从房间A走到房间B，也可 阅读全文