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;
public class BeautifulYear
{
 public static void main(String[] args)
 {
  Scanner inp=new Scanner(System.in);
  int x=inp.nextInt();
  int temp=0,t=0,q=0;
  for(int i=1000;i<=9000;i++)
  {
   t=0;
   x=x+1;
   temp=x;
   String s=Integer.toString(x);
   char ch[]=s.toCharArray();
   
   for(int j=0;j<4;j++)
   {
    for(int k=j+1;k<4;k++)
    {
     if(ch[j]!=ch[k])
     {
      t++;
      }
      }
      }
      if(t==6)
      {
       break;
       }
      }
      if(t==6)
      {
       System.out.println(temp);
       }
       }
       }
      
   