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;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String y = scanner.next();
        int n = Integer.parseInt(y);
        int count = 0;

        for(int i = n + 1; i <= 10000; i++){
            String z = String.valueOf(i);
            char[] s = z.toCharArray();
            int [] arr = new int[y.length()];
            for(int q = 0; q < arr.length; q++){
                arr[q] = s[q];
            }
            for(int j = 0; j < arr.length; j++){
                for(int k = 0; k < arr.length; k++){
                    if(arr[j] == arr[k] && j != k){
                        count++;
                    }
                }
            }
            if(count == 0){
                n = i;
                break;
            }
            count = 0;
        }
        System.out.println(n);

    }
}
