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 Main{
public static void main(String[] args)
{
    int y ;
    Scanner in = new Scanner( System.in) ;
    y = in.nextInt() +1 ;
    int flag = 0 ;
    while ( flag == 0 )
    {
        if (y/1000 != (y%1000)/100 && y/1000 != (y%100)/10 && y/1000 != y%10)
            if ( (y%1000)/100 !=(y%100)/10 && (y %1000)/100 != y%10)
                if ( (y%100)/10 != y%10 )
                {
                    System.out.println(y) ;
                    flag = 1 ;
                }
        y ++ ;
    }
}
}