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.io.*;
import java.util.*;

public class BeautifulMatrix {
	public static void main (String args[]) {
		Scanner in = new Scanner(System.in);
		int n = in.nextInt() + 1;
		HashSet<Integer> hs = new HashSet<>();
		while(true) {
			hs.add(n%10);
			hs.add((n/10)%10);
			hs.add((n/100)%10);
			hs.add((n/1000)%10);
			if(hs.size() == 4) {
				System.out.println(n);
				break;
			}
			else {
				n++;
				hs.clear();
			}
		}
	}
}	 	     		  	     	 	   	