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 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int number = sc.nextInt();
		number++;
		int num = number;
		while(true){
			boolean lol =true;
			char[] nums = Integer.toString(num).toCharArray();
			lol= nums[0]==nums[1] || nums[0]==nums[2] || nums[0]==nums[3] ||
					nums[1]==nums[2] || nums[1]==nums[3] ||
					nums[2]==nums[3];
			if(!lol){
			System.out.println(num);
			return;
			}
			num++;
		}
		
		
	}

}
