题解 | #小乐乐与欧几里得#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long n = sc.nextLong();
        long m = sc.nextLong();
        long x = m > n ? n : m;  // 最小公倍数
        while (m%x != 0 || n%x != 0) {
            x--;
        }
        long y = m * n / x;
        System.out.println(x + y);
    }
}