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 yearIn = scanner.nextInt();
        String yerStr = "";
        for (int i = yearIn + 1; i < 9013; i++) {
            yerStr = String.valueOf(i);
            char[] yearChar = yerStr.toCharArray();

            if (check(yearChar)) {
                System.out.println(yearChar);
                break;
            }
        }
    }
    public static boolean check( char yearChar[]){
        for (int j = 0; j < 4; j++) {
            for (int k = j + 1; k < 4; k++) {
                if (yearChar[j]==yearChar[k]) return false;
            }
        }
        return true;
    }


}



