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

                     n+=1;
                 }
             }
}
