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;
/**
 *
 * @author mehrdad
 */
public class Main {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        String line=sc.next();
        int num=Integer.parseInt(line);
        for(int i=num+1;i<=9012;i++)
        {
            line=Integer.toString(i);
            if((line.charAt(0)!=line.charAt(1))&&(line.charAt(0)!=line.charAt(2))&&(line.charAt(0)!=line.charAt(3)))
                if((line.charAt(1)!=line.charAt(2))&&(line.charAt(1)!=line.charAt(3)))
                    if(line.charAt(2)!=line.charAt(3))
                    break;
        }
        System.out.print(line);
    }
}
