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 A271 {
	
	static Scanner sc = new Scanner (System.in);
	

	public static void main(String[] args) {
		
		int stadin= sc.nextInt();
		
		System.out.println(solver(stadin));

	}
	
	static String solver (int inp) {
		String out=null;
		
		for(int a=inp+1; a<=9999; a++) {
			if(a%10 == a/10%10 || a%10 == a/100%10 || a%10 ==a/1000%10 || a/10%10 == a/100%10 ||a/10%10 == a/1000%10 || a/100%10 == a/1000%10)
				continue;
			else {
				out= String.valueOf(a);
				break;
			}
		}
		return out;
	}

}