package IZPIT;

import java.util.Scanner;

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

        int a = Integer.parseInt(scan.nextLine());
        int b = Integer.parseInt(scan.nextLine());
        int c = Integer.parseInt(scan.nextLine());

        for (int i = 2; i <= a ; i+=2) {

            for (int j = 2; j <= b ; j++) {

                for (int k = 2; k <= c ; k+=2) {

                    if (j == 2 || j == 3 || j == 5 || j == 7){

                        System.out.println(i+""+ j + ""+ k);
                    }

                }

            }

        }

    }
}