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) {
		// TODO Auto-generated method stub
		Scanner scanner = new Scanner(System.in);

		int y = scanner.nextInt();
		int ans = 0;
		for (int i = y + 1; i > 0; i++) {
			int j = i;

			int a = j % 10;
			j = j / 10;

			int b = j % 10;
			j = j / 10;

			int c = j % 10;
			j = j / 10;

			int d = j % 10;

			if (a != b && a != c && a != d && b != c && b != d && c != d) {
				ans = i;
				break;
			}
		}
		System.out.println(ans);

		scanner.close();
	}

}