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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class BeautifulYear {
    public static void main(String[] args) throws IOException {
        BufferedReader in = new BufferedReader (new InputStreamReader (System.in));
        String line = in.readLine();
        int year = Integer.parseInt(line);
        for (int i = year+1 ; ; i ++)
        {
            int thousand = (i/1000)%10 ;
            int hundred = (i/100) % 10 ;
            int ten = (i/10) % 10 ;
            int unit = i % 10 ;
            if (thousand != hundred && thousand != ten && thousand != unit 
                    && hundred != ten && hundred != unit && ten != unit)
            {
                System.out.println(i);
                break ;
            }
        }
    }
}
