摘要：
D. Once Again... You are given an array of positive integers a1, a2, ..., an × T of length n × T. We know that for any i > n it is true that ai = ai - 阅读全文
摘要：
C. GCD Table C. GCD Table The GCD table G of size n × n for an array of positive integers a of length n is defined by formula Let us remind you that t 阅读全文