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;

/**
 * Created by anshulsinghla on 4/3/17.
 */

public class BeautifulYear {


    public static void main(String args[]) {

        Scanner in = new Scanner(System.in);
        int year = in.nextInt();
        while (true) {
            year++;
            char[] value = String.valueOf(year).toCharArray();
            if (value[0] != value[1] && value[0] != value[2] && value[0] != value[3] && value[1] != value[2] &&
                    value[1] != value[3] && value[2] != value[3]) {
                System.out.print(year);
                break;
            }
        }
        in.close();
    }
}