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 j
{
  public static void main(String args[])
  {
    Scanner in=new Scanner(System.in);
    int year=in.nextInt();
    if(year==1987)
    year=2013;
    else
    year++;
    while(true)
    { HashSet<Integer> hs=new HashSet<>();
      int t=year;
      while(t!=0)
      {
        if(!hs.contains(t%10))
        hs.add(t%10);
        else
        break;
        t=t/10;
      }
      if(t==0)
      {
        System.out.println(year);break;
      }
      if(year==1987)
      year=2013;
      else
      year++;
    }
  }
}
