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;
import java.util.Arrays;
import java.util.stream.*;

public class hi
  {
    public static void main( String[] args )
      {
        Scanner scan = new Scanner(System.in);
        int i = scan.nextInt() + 1;
        
        while(!isUnique(i))
          {
            i++;
          }
        System.out.println(i);
        
      }
      
      public static boolean isUnique(int i)
        {
          int[] ar = new int[10];
          for( char c : String.valueOf(i).toCharArray() )
            {
              if(ar[Character.getNumericValue(c)] != 0)
                return false;
              ar[Character.getNumericValue(c)]++;
            }
            return true;
        }
  }
