using System;

public class Program

{

    public static void Main()

    {

        SameDividers(8, 12);

    }

    public static void SameDividers(int n1 , int n2)

    {

        SameDividers(n1,n2,Math.Min(n1,n2));

    }

    public static void SameDividers(int n1 , int n2 ,int min)

    {

        if(min==0)return;

        if(n1%min==0 && n2%min==0)

            Console.Write(min);

        SameDividers(n1,n2,min-1);

    }

}