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 sc = new Scanner(System.in);
        int k = sc.nextInt();
        for (int i = k+1; i <= 9012; i++) {
            if (test(i) == 1) {
                System.out.println(i);
                break;
            }
        }
    }
    static int test(int n) {
        char[] date = String.valueOf(n).toCharArray();
        if ((date[0]==date[1]) || (date[0]==date[2]) || (date[0]==date[3]) || (date[1]==date[2]) || (date[1]==date[3]) || (date[2]==date[3])) {
            return 0;
        } else {
            return 1;
        }
    }
}