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.HashMap;
import java.util.Map;
import java.util.Scanner;

public class Main {
    public static boolean distinct(int year){
        HashMap<Integer,Integer> map = new HashMap<>();
        while(year != 0){
            int n = year %10;
            if(map.containsKey(n))
            map.put(n,map.get(n) +1);
            else
                map.put(n,1);
            year /=10;
        }
        for (Map.Entry entry : map.entrySet())
            if((int) entry.getValue() >1)
                return false;

        return true;
    }
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int num = in.nextInt();
        for(int i = num+1;i< num*10; i++){
            if(distinct(i)) {
                System.out.println(i);
                return;
            }
        }
    }
}