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 Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int inputYear = scanner.nextInt();
		StringBuffer expectedYear = new StringBuffer();
		for (int i = inputYear + 1;; i++) {

			String year = i + "";
			char a = year.charAt(0);
			char b = year.charAt(1);
			char c = year.charAt(2);
			char d = year.charAt(3);

			long countA = 0, countB = 0, countC = 0, countD = 0;
			countA = year.chars().filter(ch -> ch == a).count();
			countB = year.chars().filter(ch -> ch == b).count();
			countC = year.chars().filter(ch -> ch == c).count();
			countD = year.chars().filter(ch -> ch == d).count();

			if (countA == 1 && countB == 1 && countC == 1 && countD == 1) {
				expectedYear.append(a).append(b).append(c).append(d);
				System.out.println(expectedYear);
				break;
			}
		}
	}
}
