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.*;
import java.util.*;
import java.lang.*;
public class Beautifulyear
{
    public static void main(String[] args)
    {
        Scanner s=new Scanner(System.in);
        int n=s.nextInt();
        for(int i=n+1;i<=9012;i++)
        {
            int a=i%10;
            int b=(i/10)%10;
            int c=(i/100)%10;
            int d=(i/1000)%10;
            if(a!=b&&a!=c&&a!=d&&b!=c&&b!=d&&c!=d)
            {
                System.out.print(i);
                System.exit(0);
            }
        }
    }
}
        