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 BeautifulYear {
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        int year=sc.nextInt();
        boolean q=true;
        do
        {
            year++;
            ArrayList<Integer> templist=new ArrayList<>();
            HashSet<Integer> tempset=new HashSet<>();
            int temp=year;
            while(temp>0)
            {
                tempset.add(temp%10);
                temp=temp/10;
            }
            
            if(tempset.size()==4)
            {
                q=false;
            }
            
        }while(q);
        System.out.println(year);
    }
}
