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 sc = new Scanner(System.in);
        int yr = sc.nextInt();
        
        while(++yr<=9012)
        {
            String year = Integer.toString(yr);
            int count = 0;
            for(int i = 0; i<year.length()-1; i++)
            {
                for(int j = i+1; j<year.length(); j++)
                {
                    if(year.charAt(i) == year.charAt(j))
                    {
                        count++;
                        break;
                    }
                }
            }
            if(count==0)
            {
             System.out.println(year);
             break;
            }  
        }
    }
}
