摘要： Description ：Freddy Frog is sitting on a stone in the middle of a lake. Suddenly he notices Fiona Frog who is sitting on another stone. He plans to vi... 阅读全文

摘要： Description ：BackgroundHugo Heavy is happy. After the breakdown of the Cargolifter project he can now expand business. But he needs a clever man who t... 阅读全文

摘要： DescriptionStockbrokers are known to overreact to rumours. You have been contracted to develop a method of spreading disinformation amongst the stockb... 阅读全文

摘要： DescriptionGiven a connected undirected graph, tell if its minimum spanning tree is unique.Definition 1 (Spanning Tree): Consider a connected, undirec... 阅读全文

摘要： DescriptionFarmer John has been elected mayor of his town! One of his campaign promises was to bring internet connectivity to all farms in the area. H... 阅读全文

摘要： Problem DescriptionThe doggie found a bone in an ancient maze, which fascinated him a lot. However, when he picked it up, the maze began to shake, and... 阅读全文

摘要： Description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。有人用两种说法对这N个动物所构成的食物链关系进行描述：第一种说法是"1 X Y"，表示X和Y... 阅读全文

摘要： Problem Description某省调查乡村交通状况，得到的统计表中列出了任意两村庄间的距离。省政府“畅通工程”的目标是使全省任何两个村庄间都可以实现公路交通（但不一定有直接的公路相连，只要能间接通过公路可达即可），并要求铺设的公路总长度为最小。请计算最小的公路总长度。Input测试输入包含若... 阅读全文

摘要： 题目描述我们把十进制整数依次写成一个字符串，123456789101112…请问第n位数码是多少？输入第一行是一个整数T(T≤10000)，表示样例的个数。 每行输入一个整数n(1≤n≤788888899)。输出每行输出一个样例的结果。样例输入21788888899样例输出11#include#in... 阅读全文

摘要： Problem DescriptionThe "Harry Potter and the Goblet of Fire" will be on show in the next few days. As a crazy fan of Harry Potter, you will go to the ... 阅读全文