문제: https://www.acmicpc.net/problem/2702 문제In sixth grade, students are presented with different ways to calculate the Least Common Multiple(LCM) and the Greatest Common Factor (GCF) of two integers. The LCM of two integers a and b is the smallest positive integer that is a multiple of both a and b. The GCF of two non-zero integers aand b is the largest positive integer that divides both a and b..