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;
import java.util.ArrayList;

public class a{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int start = sc.nextInt();

        ArrayList<Character> in = new ArrayList<>();
        boolean running = true;
        while(running){
            running = false;
            start++;

            in.clear();
            char[] chars = new String("" + start).toCharArray();
            for(char c : chars){
                if(in.contains(c)) running = true;
                in.add(c);
            }
        }

        




        System.out.println(start);

        
    }
}