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 Assignment4{
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int a = in.nextInt( );
        String ss= String.valueOf(a);
        while(a>999){
            a++;
            ss=a+"";
            if((ss.charAt(0)!=ss.charAt(1)&&ss.charAt(0)!=ss.charAt(2)&&ss.charAt(0)!=ss.charAt(3)&&ss.charAt(1)!=ss.charAt(2)&&ss.charAt(1)!=ss.charAt(3)&&ss.charAt(2)!=ss.charAt(3))){
                System.out.println(ss);
                break;
            }
        }
    }
}