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) {
		// TODO Auto-generated method stub
		
		Scanner scanner = new Scanner(System.in);
		int n = scanner.nextInt();
		
		while (true) {
			int[] arr = new int[10];
			boolean b = false;
			
			int j = ++n;
			while (true) {
				arr[j % 10]++;
				if (arr[j % 10] > 1)
					break;
				
				j /= 10;
				if (j == 0) {
					b = true;
					break;
				}
			}
			
			if (b) {
				System.out.println(n);
				break;
			}
		}
		
		scanner.close();
	}

}
