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.*;
public class Sorular{

  public static void main(String[] args){
    Scanner keyboard = new Scanner(System.in);
    int x= keyboard.nextInt();
    x+=1;
    String s= ""+x;
    boolean done = true;

    while (done){
      s=""+x;
      done = s.charAt(0)==s.charAt(1) || s.charAt(0)==s.charAt(2)|| s.charAt(0)==s.charAt(3)|| s.charAt(1)==s.charAt(2) || s.charAt(1)==s.charAt(3)|| s.charAt(2)==s.charAt(3);
      x+=1;

    }
    System.out.print(s);
  }
}
