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 y=sc.nextInt();
		boolean fl=true;
		do{
			y++;
			String w = Integer.toString(y);
			outer:
			for(int i=0;(i<w.length());i++){
				for(int j=0;j<w.length();j++){
					if(w.charAt(i)==w.charAt(j) && i!=j){
						fl=false;
						break outer;
					}else{
						fl=true;
					}
				}
			}
		}while(fl==false);
		System.out.println(y);
	}

}
