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 BeautifulYear {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int y = scanner.nextInt();
        System.out.println(beautifulYear(y));
    }

    public static int beautifulYear(int y) {
        for (int i = y+1; i <= 10000; i++) {
            if (i / 1000 != i / 100 % 10 && i / 1000 != i / 10 % 10 && i / 1000 != i % 10 && i / 100 % 10 != i / 10 % 10 && i / 100 % 10 != i % 10 && i / 10 % 10 != i % 10) {
                return y+1;
            }else y++;
        }
        return y;
    }
}
