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 BeautifulYear {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int yearNumber = scanner.nextInt();

        boolean flag = false;
        yearNumber++;
        int counter = 0;
        while (!flag){
            String yearNumberString = String.valueOf(yearNumber);
            for (int i = 0; i < yearNumberString.length(); i++) {
                for (int j = i + 1; j < yearNumberString.length(); j++) {
                    if (yearNumberString.charAt(i) != yearNumberString.charAt(j)){
                        counter++;
                        if(counter == 6){
                            flag = true;
                        }
                    }
                }
            }
            yearNumber++;
            counter = 0;
        }
        System.out.println(yearNumber - 1);
    }
}
