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 Fir {
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		int sayi = input.nextInt();
		input.close();
		if(sayi<=9000 & sayi>=1000){
		for(int i=0;i<9999;i++){
			sayi++;
			int a=sayi%10,b=(sayi%100)/10,c=(sayi%1000)/100,d=sayi/1000;
			if(a!=b & a!=c & a!=d & b!=c & b!=d & c!=d ){
				System.out.println(sayi);
				break;
				}
			}
		}
	}
}