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  Chef {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
   while(true ){
       n+=1;
       int a = n /1000;
   int b =(n/100)%10;
   int c =(n/10)%10;
   int d = n%10;
   if(a!= b && a!= c && a!= d && b!= c && b!=d && c!=d){
       break ;
   }



   }
        System.out.println(n);
    }
}