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 Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int year = scanner.nextInt();
        String yearStr = year + "";
        int y;
        for (y = year + 1; y <= 100000; y++) {
            HashSet<Character> set = new HashSet<>();
            boolean duplicate = false;
            for (int i = 0; i < yearStr.length() && !duplicate; i++) {
                char c = (y + "").charAt(i);
                if (set.contains(c)) {
                    duplicate = true;
                }
                set.add(c);
            }
            if (!duplicate) {
                System.out.println(y);
                break;
            }
        }
    }
}
