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.io.*;
import java.util.*;
public class Main{
    public static void main(String[] args)
    {
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        int x=n+1;
        while(true)
        {
            int p=x;
            HashMap<Integer,Integer> mp=new HashMap<Integer,Integer>();
           while(p!=0)
           {
               int x1=p%10;
               if(mp.containsKey(x1))
               break;
               else
               mp.put(x1,1);
               p=p/10;
               
           }
           if(mp.size()==Integer.toString(x).length())
           {
               System.out.println(x);
               break;
           }
           else
           x++;
        }
    }
}
