题解 | #求最小公倍数#

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);
        int m = console.nextInt();
        int n = console.nextInt();
        int result = getCM(m, n);
        System.out.println(result);
    }

    private static int getCM(int m, int n) {
        int min = Math.min(m,n);  //3
        int max = Math.max(m,n);  //7
//        int max = m > n ? m : n;
        for (int i = min; i <= min*max; i++) {   //3 21
            if (i % m == 0 && i % n == 0) {
                return i;
            }
        }
        return -1;
    }
}