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
/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
public class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner scan = new Scanner(System.in);
		int year = scan.nextInt();
		year = year + 1 ;
		
		while(true)
		{
			int a = year/1000;
			int b = (year/100) % 10;
			int c = (year/10) % 10;
			int d = year % 10;
			
			if(a!=b && b!=c && c!=d && a!=d && a!=c && b!=d)
			{
				break;
			}
			else
			{
				year = year + 1 ;
			}
		}
		
		System.out.println(year);
	}
}