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 BeautifulYear {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		
		int y = scan.nextInt();
		int a, b, c, d;
		y++;
		int z = y;
		
		while(true) {
			z = y;
			d = z%10;
			z/= 10;
			c = z%10;
			z/= 10;
			b = z%10;
			z/= 10;
			a = z%10;
			if(a!=b && a!=c && a!=d && b!=c && b!=d && c!=d) {
				System.out.println(y);
				break;
			}
			else {
				y++;
			}
		}
		scan.close();
	}
}
