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 Beautiful_Year {
    public static void main(String[] args) {
        // System.out.println("Enter Year");
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int a[] = new int[5];

        int k = 0;
        for (int i = n + 1; i <= 90000; i++) {
            k = i;
            for (int j = 0; j < 4; j++) {
                a[j] = k % 10;
                k = k / 10;
            }

            if (a[0] != a[1] && a[2] != a[3] && a[1] != a[3] && a[0] != a[2] && a[0] != a[3] && a[1] != a[2]) {
                System.out.println(i);
                break;

            }

        }

    }

}
