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();
		int n = 20000;
		for (int i = y+1; i <= n; i++) {
			String s = String.valueOf(i);
			char[] c = s.toCharArray();
			if (c[0] != c[1] && c[0] != c[2] && c[0] != c[3] && c[1] != c[2] && c[1] != c[3] && c[2] != c[3]) {
				System.out.println(c);
				break;
			} else
				continue;
		}

	}

}
