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) {
		Scanner sc = new Scanner(System.in);
		int year = sc.nextInt();
		int s=year;
		int x=0;
		int y=0;
		int z=0;
		int w=0;
		while (w==x || x==y || y==z || w==z || x==z ||y==w || y==z) {
			s=s+1;
			w=s /1000;
			x=(s /100 )-(10*w);
			z=s % 10;
			y=(s%100 - z)/10;
			}
		
		System.out.println(s);
 }}