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 year = scanner.nextInt();
        year++;

        char q = 0;
        char w = 0;
        char e = 0;
        char r = 0;
        boolean b = true;

        while (q == w || q == e || q == r || w == e || w == r || e == r) {
            String yearStr = Integer.toString(year);
            q = yearStr.charAt(0);
            w = yearStr.charAt(1);
            e = yearStr.charAt(2);
            r = yearStr.charAt(3);
            year++;
        }

        System.out.println(year-1);
    }
}
