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.Scanner;
public class Testing{
public static void main(String args[]){
Scanner input =new Scanner (System.in);
String s,ss;
s=input.next();

int d;
d=Integer.parseInt(""+s);
String a1,a2,a3,a4;

for(int i=0;;i++){
	d++;
	ss=""+d;
	a1=""+ss.charAt(0);
	a2=""+ss.charAt(1);
	a3=""+ss.charAt(2);
	a4=""+ss.charAt(3);
	if(a1.equals(a2) || a1.equals(a3) || a1.equals(a4) ||a2.equals(a3) ||a2.equals(a4)||a3.equals(a4))
		continue;
		else
		break;

}
System.out.println(d);
}

}