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.io.BufferedReader;
import java.util.Scanner;


public class Year {




    public static void main(String[] args)throws Exception {
        Scanner scanner = new Scanner(System.in);
        String line = scanner.next();
        int year = Integer.parseInt(line);
        while(true){
            year++;
            char [] yearS = Integer.toString(year).toCharArray();
            if( yearS[0] != yearS[1] &&
                    yearS[0] != yearS[2] &&
                    yearS[0] != yearS[3] &&
                    yearS[1] != yearS[2] &&
                    yearS[1] != yearS[3] &&
                    yearS[2] != yearS[3]){
                break;
            }
        }
        System.out.println(year);
    }
}