摘要： 题目链接：https://vjudge.net/contest/226823#problem/D The Bad Luck Island is inhabited by three kinds of species: r rocks, s scissors and p papers. At some 阅读全文

摘要： 题目链接：https://vjudge.net/contest/226823#problem/C You play a computer game. Your character stands on some level of a multilevel ice cave. In order to m 阅读全文

摘要： 题目链接：https://vjudge.net/contest/226823#problem/B Little Vova studies programming in an elite school. Vova and his classmates are supposed to write n p 阅读全文

摘要： 题目链接：https://vjudge.net/contest/224393#problem/E Vanya is doing his maths homework. He has an expression of form , where x1, x2, ..., xn are digits fr 阅读全文