riba2534

动物王国中有三类动物A,B,C，这三类动物的食物链构成了有趣的环形。A吃B， B吃C，C吃A。现有N个动物，以1－N编号。每个动物都是A,B,C中的一种，但是我们并不知道它到底是哪一种。第一种说法是"1 X Y"，表示X和Y是同类。第二种说法是"2 X Y"，表示X吃Y。此人对N...

In 12th Zhejiang College Students Games 2007, there was a new stadium built in Zhejiang Normal University. It was a modern stadium which cou...

The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication tech...

You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected...

There are N villages, which are numbered from 1 to N, and you should build some roads such that every two villages can connect to each other...

You are assigned to design network connections between certain points in a wide area. You are given a set of points in the area, and a set o...

The Head Elder of the tropical island of Lagrishan has a problem. A burst of foreign aid money was spent on extra roads between villages som...

TT and FF are ... friends. Uh... FF is a bad boy, he is always wooing TT to play the following game with him. This is a very humdrum game. T...

Today is Ignatius' birthday. He invites a lot of friends. Now it's dinner time. Ignatius wants to know how many tables he needs at least. Yo...