摘要： " 题目链接 " Problem Description Eddy begins to like painting pictures recently ,he is sure of himself to become a painter.Every day Eddy draws pictures i 阅读全文

摘要： " 题目链接 " Description You are given a bunch of wooden sticks. Each endpoint of each stick is colored with some color. Is it possible to align the stick 阅读全文

摘要： " 题目链接 " Description You have just moved from Waterloo to a big city. The people here speak an incomprehensible dialect of a foreign language. Fortuna 阅读全文

摘要： " 题目链接 " Description Given n, a positive integer, how many positive integers less than n are relatively prime to n? Two integers a and b are relativel 阅读全文

摘要： " 题目链接 " Description Given a big integer number, you are required to find out whether it's a prime number. Input The first line contains the number of 阅读全文

摘要： " 题目链接 " Description Many people like to solve hard puzzles some of which may lead them to madness. One such puzzle could be finding a hidden prime nu 阅读全文

摘要： " 题目链接 " Description 两只青蛙在网上相识了，它们聊得很开心，于是觉得很有必要见一面。它们很高兴地发现它们住在同一条纬度线上，于是它们约定各自朝西跳，直到碰面为止。可是它们出发之前忘记了一件很重要的事情，既没有问清楚对方的特征，也没有约定见面的具体位置。不过青蛙们都是很乐观的，它们 阅读全文

摘要： " 题目链接 " Description You, as a member of a development team for a new spell checking program, are to write a module that will check the correctness of 阅读全文

摘要： " 题目链接 " Problem Description 有N对双胞胎，他们的年龄分别是1，2，3，……，N岁，他们手拉手排成一队到野外去玩，要经过一根独木桥，为了安全起见，要求年龄大的和年龄小的排在一起，好让年龄大的保护年龄小的，然后从头到尾，每个人报告自己的年龄，就得到了一个年龄的序列。比如有4 阅读全文

摘要： " 题目链接 " Problem Description Zty很痴迷数学问题.。一天，yifenfei出了个数学题想难倒他，让他回答1 / n。但Zty却回答不了^_^. 请大家编程帮助他. Input 第一行整数T，表示测试组数。后面T行，每行一个整数 n (1 include include 阅读全文