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 test
{
    public static void main(String[] args)
    {
        Scanner in=new Scanner(System.in);
        int n=in.nextInt();
        for(int i=n+1;;i++)
        {
            char a,b,c,d;
            String temp=i+"";
            a=temp.charAt(0);
            b=temp.charAt(1);
            c=temp.charAt(2);
            d=temp.charAt(3);
            if(a!=b && a!=c && a!=d && b!=c && b!=d && c!=d)
            {
                System.out.println(i);
                break;
            }
        }
    }
}