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.lang.*;
import java.util.*;
public class beautifulYear {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int year = scan.nextInt() + 1;
		int temp = year;
		int newTemp = temp;
		boolean cond = true;
		while(cond) {
			temp = newTemp;
			Set<Integer> set = new HashSet<Integer>();
			for(int i = 0; i < Integer.toString(year).length(); i++) {
			set.add(temp % 10);
			temp -= (temp % 10);
			temp /= 10;
		}
		if (set.size() == Integer.toString(year).length()) {
			cond = false;
			break;
		}
		else {
			newTemp++;
		}
		}
		System.out.print(newTemp);
	}
}