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 prog
{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        while(true)
			{
				n++;
				int n1=n/1000;
				int n2=n/100%10;
				int n3=n/10%10;
				int n4=n%10;  
				if(n1!=n2 && n1!=n3 && n1!=n4 && n2!=n3 && n2!=n4 && n3!=n4)
				{
					break;
				}
			}
		System.out.println(n);
    }        
}