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.*;

public class demo {
    static int mod = 998244353;
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        char [] array = String.valueOf(input.nextInt() + 1).toCharArray();
        while(true){
            boolean x = true;
            for(int i = 0 ; i < 4 ; i++){
                for(int j = i + 1 ; j < 4 ; j++){
                    if(array[i] == array[j]){
                        x = false;
                        array = String.valueOf(Integer.parseInt(String.valueOf(array)) + 1).toCharArray();
                        break;
                    }
                }
            }
            if(x){
                System.out.println(String.valueOf(array));
                return;
            }
        }
    }
}
