public class Vampire {
    public static int a (int n) {
        return n/1000;

    }
    public static int b (int n) {
        return (n / 100) - 10;

    }

    public static int c (int n) {
        return(n / 10) % 10;
    }

    public static int d(int n) {
        return n%10;
    }

    public static int number(int i , int k) {
        return (i*10) + k;
    }

    public static  void test (int i , int j ,int k) {
        if( i == (j * k))
            System.out.println(i);
    }
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        for (int i =1000 ; i<= 9999 ; i++) {
            test(i, number(a(i), b(i)), number(c(i), d(i)));
            test(i, number(a(i), b(i)), number(d(i), c(i)));
            test(i, number(a(i), c(i)), number(b(i), d(i)));
            test(i, number(a(i), c(i)), number(d(i), b(i)));
            test(i, number(a(i), d(i)), number(b(i), c(i)));
            test(i, number(a(i), d(i)), number(c(i), b(i)));
            test(i, number(b(i), a(i)), number(c(i), d(i)));
            test(i, number(b(i), a(i)), number(d(i), c(i)));
            test(i, number(b(i), c(i)), number(d(i), a(i)));
            test(i, number(b(i), d(i)), number(c(i), a(i)));
            test(i, number(c(i), a(i)), number(d(i), b(i)));
            test(i, number(c(i), b(i)), number(d(i), a(i)));




        }


    }

}