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 scan = new Scanner(System.in);

        String year;
        int y;

         year  = scan.nextLine();
        for (y =1000;y <=9000;y ++ ) {
            year = String.valueOf( Integer. parseInt(year)+1);
            if (year.charAt(0)!=year.charAt(1) && year.charAt(0)!=year.charAt(2)
                    && year.charAt(0)!=year.charAt(3) && year.charAt(1)!=year.charAt(2)
                    && year.charAt(1)!=year.charAt(3) && year.charAt(2)!=year.charAt(3))
                break;
        }
        System.out.println((year));
    }
}
