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 beautyear {
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
       int n=sc.nextInt();
       for(int i=n+1;i<=90000;i++)
       {
           int a=i%10;
           int b=(i/10)%10;
           int c=(i/100)%10;
           int d=(i/1000)%10;

           if( (a != b) && (a!=c) && (a!=d) && (b!=c) && (b!=d) && (c!=d))
           {
               System.out.println(i);
               i=100000;
           }
       }
       }
    }