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.ArrayList;
import java.util.List;
import java.util.Scanner;



public class Task0001 {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int n=in.nextInt();
		int a,b,c,d;
		
		while (true){
        n+=1;
        a=n/1000;
        b=n/100%10;
        c=n/10%10;
        d=n%10;
        if (a!=b && a!=c && a!=d && b!=c && b!=d && c!=d){
            break;
        }
    }
		System.out.print(n);

	}
}