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 year = scanner.nextInt();
        int nextYear = year+1;
        for(int i = nextYear;i<=100000;i++){
            int again = i;
            int unit = again%10;
            again/=10;
            int tens = again%10;
            again/=10;
            int hundred = again%10;
            again/=10;
            int thousand = again%10;

            if(unit!=tens && unit!=hundred && unit!=thousand && tens!=hundred && tens!=thousand && hundred!=thousand){
                System.out.println(i);
                break;
            }
        }
    }
}
