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.*;

public class Main
{
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int y=sc.nextInt();
		int i,a,b,c,d,x;
	
       
        for(i=y+1;i<=9123;i++){
            x=i;
            a=x%10;
            x=x/10;
            b=x%10;
            x=x/10;
            c=x%10;
            x=x/10;
            d=x%10;
            
            if(a!=b && a!=c && a!=d && b!=c && b!=d && c!=d)
            {
                System.out.println(i);
                break;
            }
            
        
        }
	}
}
