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
//package codeforce;

import java.util.Scanner;

public class krasiviygod {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int y = sc.nextInt();
        boolean b = true;
        while(b) {
            y++;
            char[] c = Integer.toString(y).toCharArray();
            if(c[0] == c[1] || c[1] == c[2] || c[0] == c[3] || c[1] == c[3] || c[2] == c[3] || c[0] == c[2]) {
                continue;
            }else {
                b = false;
            }
        }
        System.out.println(y);
    }
}
