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.*;
public class Beautiful_Year
{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        Beautiful_Year ob=new Beautiful_Year();
        int n=sc.nextInt();
        while(true)
        {
            if(ob.next(++n))
            {
                System.out.print(n);
                break;
            }
        }
    }
    boolean next(int n)
    {
        int i;
        int a[]=new int[10];
        for(i=0;i<10;i++)
            a[i]=0;
        while(n>0)
        {
            a[n%10]++;
            n=n/10;
        }
        for(i=0;i<10;i++)
        {
            if(a[i]>1)
                return false;
        }
        return true;
    }
}