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 MyClass {
    public static boolean dis(String n){
        boolean flag=false;
        for(int i=0;i<n.length()&&!flag;i++)
        {for(int j=0;j<n.length();j++)
         if(n.charAt(i)==n.charAt(j)&&i!=j)
         flag=true;}
         return !flag;
            
            
            
        }
    
    
    
    public static void main(String args[]) {
        Scanner sc =new Scanner (System.in);
        int n=sc.nextInt();
        int i=n+1;
        while(!dis(i+""))
        i++;
        System.out.println(i);
        
               
               
    }
}