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.io.*;
import java.util.*;
public class HelloWorld{
 
     public static void main(String []args){
       int y,a,b,c,d;
       Scanner sc=new Scanner(System.in);
       y=sc.nextInt();
       while(true)
       {
           y+=1;
           a=y%10;
           b=(y/10)%10;
           c=(y/100)%10;
           d=(y/1000)%10;
           if(a!=b && a!=c && a!=d && b!=c && b!=d && c!=d){
               System.out.println(y);
               break;
           }
       }
     }
}