It seems like the year of 2013 came only yesterday. Do you know a curious fact? The year of 2013 is the first year after the old 1987 with only distinct digits.

Now you are suggested to solve the following problem: given a year number, find the minimum year number which is strictly larger than the given one and has only distinct digits.

Input

The single line contains integer y (1000 ≤ y ≤ 9000) — the year number.

Output

Print a single integer — the minimum year number that is strictly larger than y and all it's digits are distinct. It is guaranteed that the answer exists.

Examples

Input

1987


Output

2013


Input

2013


Output

2014

import java.util.Scanner;


public class BeautifulYear {
    public static void main(String asd[])throws Exception
    {
        Scanner in=new Scanner(System.in);
        int n=in.nextInt();
        int c=0;
        while(c!=4)
        {
            n+=1;
            String s=Integer.toString(n);
            c=0;
            for(int i=0;i<4;i++)
            {if(s.indexOf(s.charAt(i))==s.lastIndexOf(s.charAt(i)))
            {
                c+=1;
             
            }
            else
                break;
            }       
        }
        if(c==4)
        System.out.println(n);
    }
}
