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 Main {
 
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int n=sc.nextInt();
		int a,b,c,d;
		while(true){
		    n++;
		    a=n%10;
		    b=(n/10)%10;
		    c=(n/100)%10;
		    d=(n/1000)%10;
		    if(a!=b && a!=c && a!=d && b!=c && b!=d && c!=d)
		        break;
		}
		System.out.println(n);
	}
}