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 Scratchpad2 {

	public static void main(String[] args) {
		
		Scanner in = new Scanner(System.in);
		
		int n = in.nextInt();
		
		n++;
		
		boolean flag = false;
		
		
		
		
		while (flag == false) {
			String m = Integer.toString(n);
			int temp = n;
			for (int i = 0; i < m.length(); i++) {
				for (int j = i+1; j < m.length(); j++) {
					if (m.charAt(i) == m.charAt(j)) {
						n++;
					}
				}

			}
			
			if (temp == n) {
				flag = true;
				System.out.println(n);
			}
			
			
		}
		
		
	}
}
	