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.*;


public class Solution {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        
        num++;
        while (true) {
            int temp = num;
            int a = temp % 10;
            temp /= 10;
            int b = temp % 10;
            temp /= 10;
            int c = temp % 10;
            temp /= 10;
            int d = temp;
            
            if (a != b && a != c && a != d) {
                if (b != c && b != d && b != a) {
                    if (c != d && c != a && c != b) {
                        if (d != a && d != b && d != c) {
                            break;
                        }
                    }
                }
            }
            num++;
        }

        System.out.println(num);
    }
}