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.*;

public class Beautifulyear{
	public static void main(String[] args) {
		Scanner s=new Scanner(System.in);
		int n=s.nextInt();
		int state=0;
		while(state!=1){
			n++;
			char[] ch=(""+n).toCharArray();
			outerloop:
			for(int i=0;i<ch.length-1;i++)
				for(int j=i+1;j<ch.length;j++)
				{
					if(ch[i]==ch[j]){
						state=0;
						break outerloop;
					}
					else
						state=1;
				}
			if(state==1)
				System.out.println(n);
		}
	}
}