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 in = new Scanner(System.in);
		String s = in.next();
		int i = Integer.parseInt(s);
		int j = 0;
		while (j == 0) {
			i = i + 1;
			String num = Integer.toString(i);
			char[] q = num.toCharArray();
			if (q[0] != q[1]) {
				if (q[0] != q[2]) {
			               if (q[0] != q[3]) {
			               		if (q[1] != q[2]) {
			                        	if (q[1] != q[3]) {
			                        		if (q[2] != q[3]) {
									System.out.println(num);
									j = 1;
								} 
							} 
						} 
					} 
				}  
			} 
		}
	}
}
