进击的黑仔

摘要： 题目描述 You are given a string S consisting of lowercase English letters. Another string T is initially empty. Determine whether it is possible to obtain 阅读全文

摘要： 题目描述 There are N towns located in a line, conveniently numbered 1 through N. Takahashi the merchant is going on a travel from town 1 to town N, buying 阅读全文

摘要： Problem Description 有两堆石子，数量任意，可以不同。游戏开始由两个人轮流取石子。游戏规定，每次有两种不同的取法，一是可以在任意的一堆中取走任意多的石子；二是可以在两堆中同时取走相同数量的石子。最后把石子全部取完者为胜者。现在给出初始的两堆石子的数目，如果轮到你先取，假设双方都采取 阅读全文

摘要： Farmer John knows that an intellectually satisfied cow is a happy cow who will give more milk. He has arranged a brainy activity for cows in which the 阅读全文

摘要： 问题 J: Palindromic Password 题目描述 The IT department at your school decided to change their password policy. Each password will have to consist of N 6-di 阅读全文

摘要： Contest1290 - 2018组队训练赛第十五场 阅读全文