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.*;
import java .io.*;
import java.lang.reflect.Array;
public class Main 
{
	public static void main(String args[]) {
		Scanner sc=new Scanner(System.in);
        int x,s,b,w,year;
        year=sc.nextInt();
        boolean f=true;
        while (year>=1000 && year <=10000&& f==true) {
        	++year;
        	x=year%10;
            s=(year/10)%10;
            b=(year/100)%10;
            w=(year/1000)%10;
            if (x!=s && x!=b && x!=w && s!=b && b!=s &&s!=w && b!=w &&s!=x && b!=x&& w!=x&& w!=s&& w!=b) {
            	break;
            	
            }
        }
        System.out.println(year);
	}
}


             