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 BeautifulYear
{
    public static void main(String[] args)
    {
        Scanner scanner = new Scanner(System.in);
        int y = scanner.nextInt() + 1;
        while(!unique(y))
        {
            y++;
        }

        System.out.println(y);
    }

    public static boolean unique(int n)
    {
        HashSet<Integer> set = new HashSet<Integer>();
        set.add(n%10);
        n /= 10;
        set.add(n%10);
        n /= 10;
        set.add(n%10);
        n /= 10;
        set.add(n%10);
        if(set.size() == 4)
            return true;
        return false;
    }
}
