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 A_271 {
	private static Scanner tec = new Scanner(System.in);
	public static void main(String[] args) {
		int y = tec.nextInt();
		for(int i = y + 1; i <= 9500; i++)
		{
			String a = "" + i;
			boolean o = true;
			for( int j = 0; j < a.length() - 1; j++)
			{
				for(int k = j + 1; k < a.length(); k++)
				{
					if (a.charAt(j) == a.charAt(k))
						o = false;
				}
				
				
			}
			if (o){
					System.out.println(i);
					i = 10000;
				}
		}
	}
}
