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 BeautifulYear166A {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);

    int year = sc.nextInt();

    while (true) {
      year += 1;

      int a = year / 1000;
      int b = (year / 100) % 10;
      int c = (year / 10) % 10;
      int d = year % 10;

      if (a != b && a != c && a != d && b != c && b != d && c != d)
        break;
    }

    System.out.print(year);
  }
}