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 ReviseHello {

	public static void main(String args[]){
		
		int n;
		String na;
		Scanner sa = new Scanner(System.in);
		boolean b = true;
		n = sa.nextInt();
		
		
		while(b)
		{
			n = n + 1;
			na = Integer.toString(n);
			char[] c = na.toCharArray();
			if(check(c)==1)
			{
				b=false;
			}
		}
		
		System.out.println(n);
		
		
	}
	
	public static int check(char[] a)
	{
		int ans=1;
		for(int i=0;i<a.length;i++)
		{
			for(int j=0;j<a.length;j++)
			{
					if(a[i] == a[j])
					{
						if(i==j)
						{
							
						}
						else
						{
							ans = 0;
						}
						
					}
			}
		}
		return ans;
	}
	
}
