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.*;

public class a {
	public static void main (String[]args) {
		Scanner scan = new Scanner(System.in);
		int x = scan.nextInt();
		HashSet<Integer> nums = new HashSet<Integer>();
		while (true) {
			x++;
			int temp = x;
			for (int i = 0; i < 4; i++) {
				nums.add(temp % 10);
				temp /= 10;
			}
			if (nums.size() == 4) break;
			nums.clear();
		}
		System.out.println(x);
	}
}