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.Arrays;
import java.util.Scanner;
public class BeautifulYear {
    public static void main(String[] args) {
        int year = new Scanner(System.in).nextInt();
        int[] digits = new int[10];

        String str ;
        int j;
        for (int i = year + 1; ; i++) {
            str = String.valueOf(i);
            Arrays.fill(digits,0);
            for (j = 0; j < str.length(); j++) {
                if(digits[str.charAt(j) - '0'] == 1)
                    break;
                ++digits[str.charAt(j) - '0'];
            }
            if(j == str.length()) {
                System.out.println(i);
                break;
            }
        }
    }
}
