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 suluman {
	public static void main(String[] args){
	Scanner tarayici = new Scanner(System.in);
	int n = tarayici.nextInt();
	n = n+1;
	String s = Integer.toString(n);
	boolean dogruluk = true;
	for (int i = 0; i < s.length(); i++) {
		for (int j = 0; j < s.length(); j++) {
			if (s.charAt(i) == s.charAt(j) && i!=j) {
				dogruluk = false;
				break;
			}
			else {
				dogruluk = true;
			}
		}
		if (dogruluk == false) {
			n++;
			s = Integer.toString(n);
			i = 0;
		}
	}
	System.out.print(s);
	
	
	}

}
