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 year = sc.nextInt();
		int ans = 0;
		
		for(int i =year+1; i<=90000; i++)
		{
			
			String by = Integer.toString(i);
			if(by.charAt(0) != by.charAt(1) && by.charAt(1) != by.charAt(2) && by.charAt(2)!= by.charAt(3) && by.charAt(3)!= by.charAt(0) && by.charAt(0) != by.charAt(2) && by.charAt(1) != by.charAt(3))
			{
				ans = Integer.parseInt(by);
				break;
			}
			
		}
		System.out.println(ans);
	}
}