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 scan=new Scanner(System.in);
        int y=scan.nextInt();
        int z=10000;
        int x=0,num=0;
        char ch[]=new char[4];
        String str;
        for(int i=0;i<z;i++)
        {
            x=y+i+1;
            str=Integer.toString(x);
            for(int j=0;j<4;j++)
            {
                ch[j]=str.charAt(j);
            }
            if(ch[0]!=ch[1] && ch[0]!=ch[2] && ch[0]!=ch[3] && ch[1]!=ch[2] && ch[1]!=ch[3] && ch[2]!=ch[3])
            {
                System.out.println(x);
                break;
            }
        }
    }
}