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 Main
{
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int year=sc.nextInt()+1;
		HashSet<Integer>set=new HashSet<Integer>();
		int year1;
		int r;
		while(true)
		{
		    year1=year; 
		    while(year1!=0)
		    {
		        r=year1%10;
		        set.add(r);
		        year1=year1/10;
		    }
		    if(set.size()==4)
		    {
		        System.out.println(year);
		        break;
		    }
		year++;
		set.clear();
		}
		
		
	}
}
