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 sc=new Scanner(System.in);
		int n=sc.nextInt();
		int y=n;
		while(true) {
			++y;
			int a=y/1000;
			int b=y/100%10;
			int c=y/10%10;
			int d=y%10;
			if (a!=b && a!=c && a!=d && b!=c && b!=d && c!=d) 
				break;
		}
		System.out.println(y);
	}
}