Gealo

摘要： Problem Description A string is called a square string if it can be obtained by concatenating two copies of the same string. For example, "abab", "aa" 阅读全文

摘要： Description A prefix of a string is a substring starting at the beginning of the given string. The prefixes of "carbon" are: "c", "ca", "car", "carb", 阅读全文

摘要： Problem Description You are given two sequence {a1,a2,...,an} and {b1,b2,...,bn}. Both sequences are permutation of {1,2,...,n}. You are going to find 阅读全文

摘要： Problem Description Ignatius最近遇到一个难题,老师交给他很多单词(只有小写字母组成,不会有重复的单词出现),现在老师要他统计出以某个字符串为前缀的单词数量(单词本身也是自己的前缀). Input 输入数据的第一部分是一张单词表,每行一个单词,单词的长度不超过10,它们代表 阅读全文

摘要： Problem Description Given a list of phone numbers, determine if it is consistent in the sense that no number is the prefix of another. Let’s say the p 阅读全文

摘要： Problem Description Given two positive integers a and b,find suitable X and Y to meet the conditions: X+Y=a Least Common Multiple (X, Y) =b Input Inpu 阅读全文

摘要： Problem Description B君和G君聊天的时候想到了如下的问题。给定自然数l和r ,选取2个整数x,y满足l <= x <= y <= r ,使得x|y最大。其中|表示按位或，即C、 C++、 Java中的|运算。 Input 包含至多10001组测试数据。第一行有一个正整数，表示数据 阅读全文

摘要： 我们称一个有向图G是传递的，当且仅当对任意三个不同的顶点a,,若G中有 一条边从a到b且有一条边从b到c ,则G中同样有一条边从a到c。 我们称图G是一个竞赛图，当且仅当它是一个有向图且它的基图是完全图。换句 话说，将完全图每条边定向将得到一个竞赛图。下图展示的是一个有4个顶点的竞赛图。现在，给你两 阅读全文

摘要： Problem Description Chinese always have the railway tickets problem because of its' huge amount of passangers and stations. Now goverment need you to 阅读全文

摘要： Problem Description For a number,if the length of continuous odd digits is even and the length of continuous even digits is odd,we call it odd-even nu 阅读全文