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 CODE {

    static Scanner sc = new Scanner(System.in);

    static boolean is(int n) {
        boolean arr[] = new boolean[10];

        while (n != 0) {
            if (arr[n % 10] == true) {
                return false;
            }
            arr[n % 10] = true;
            n/=10;
        }

        return true;
    }

    public static void main(String args[]) {
        int n = sc.nextInt();
        n++;
        while (!is(n)) {
            n++;
        }
        System.out.println(n);

    }
}
