using System;

public class Program

{

    public static void Main()

    {

        int input1= 5468001;

        char[] ch = input1.ToString().ToCharArray();

        Array.Sort(ch);

        int i=0;

        while(ch[i]=='0')

            i++;

        if(i!=0)

        {

            ch[0]=ch[i];

            ch[i]='0';

        }

        Console.WriteLine(ch);

    }

}