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 _23BeautifulYear {
 
	public static void main(String[] args) {
 
		Scanner sc = new Scanner(System.in);
		int year =sc.nextInt();
		
		while(true) {
			year++;
 
			int a=year%10;
			int b=(year/10)%10;
			int c=(year/100)%10;
			int d=(year/1000)%10;
			if(a!=b&&a!=c&&a!=d&&b!=c&&b!=d&&c!=d)
				break;
		}
		System.out.println(year);
		
	}
 
}