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.*;
import java.io.*;

public class JavaApplication10 {

  
    public static void main(String[] args) {
             Scanner scan = new Scanner(System.in);
             int n = scan.nextInt();
  
             while(true){
               n++;
               String num = Integer.toString(n);
               boolean flag = true;
               for(char ch:num.toCharArray()){
                   if(num.indexOf(ch)!=num.lastIndexOf(ch))flag = false;
               }
               if(flag)break;
             }
             System.out.println(n);
    }

}