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.*;
public class TestClass
{
	static int n;
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		n = sc.nextInt();
		int i =0;
		String s= n+"";
		HashSet<Integer> set = new HashSet<>();
		for(i=n+1;i<9013;i++)
		{
			set.clear();
			int x = i;
			while(x>0)
			{
				set.add(x%10);
				x/=10;
			}
			if(set.size()==s.length())
				break;				
		}

		System.out.println(i);
	}
}