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;

public class Main {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String y = in.next();
        int year2;
        do {
            year2 = Integer.parseInt(y);
            year2++;
            y = Integer.toString(year2);
        //} while (y.charAt(0) != y.charAt(1) && y.charAt(1) != y.charAt(2) && y.charAt(2) != y.charAt(3) || y.charAt(1) != y.charAt(2) || y.charAt(1) != y.charAt(3) && y.charAt(2) != y.charAt(3));
        } while (!(y.charAt(0) != y.charAt(1) && y.charAt(0) != y.charAt(2) && y.charAt(0) != y.charAt(3) && y.charAt(1) != y.charAt(2) && y.charAt(1) != y.charAt(3) && y.charAt(2) != y.charAt(3)));
        System.out.println(y);
    }
}
