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.lang.*;
import java.io.*;

public class S {

   public static void main(String[] args){
      
       Scanner k = new Scanner(System.in);
       int y= k.nextInt();
       String year;
       int count=1;
       y=y+1;
       while(count==1)
       {   year=Integer.toString(y);
           char[] yr= year.toCharArray();
           count=0;
           for(int i=0;i<year.length();i++)
           {for(int j=i+1;j<year.length();j++)
            { if(yr[i]==yr[j])
               { y++; 
                 count=1;
                 
               }
            }
           }
          }   
        System.out.println(y);       
}       
}   