ProgBasics07Nested-Loops-MoreExercisesY05TheSongOfTheWheel

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int M = Integer.parseInt(scanner.nextLine());
        int A = 0;
        int B = 0;
        int C = 0;
        int D = 0;
        int number = 0;
        for (int a = 1; a <= 9; a++)
            for (int b = 1; b <= 9; b++)
                for (int c = 1; c <= 9; c++)
                    for (int d = 1; d <= 9; d++) {
                        if (M == a * b + c * d) {
                            if (a < b && c > d) {
                                System.out.printf("%d%d%d%d ", a, b, c, d);
                                number++;
                                if (number == 4) {
                                    A = a;
                                    B = b;
                                    C = c;
                                    D = d;
                                }
                            }

                        }

                    }
        System.out.println();

        if (number >= 4) {
            System.out.printf("Password: %d%d%d%d", A, B, C, D);
        } else {
            System.out.println("No!");
        }
    }
}