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 Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int number = scanner.nextInt() + 1;
        while (!( number
        		/ 1000 != (number/10)%10 &&number % 10 != (number/10)%10 && number % 10 != 
        		(number/100)%10 && number%10 != number/1000 && number
        		/ 1000 != (number/100)%10 && (number/100)%10 != (number/10)%10)){
            number++;
        }
        System.out.println(number);
        
    }
}