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 Beautiful_Year {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        n = n+1;
        while(!alldistict(n)){
            n = n+1;
        }
        System.out.println(n);
    }

    private static boolean alldistict(int n) {
        boolean[] numbers = new boolean[10];
        while(n>0){
            if(numbers[n%10]) return  false;
            numbers[n%10]=true;
            n = n/10;
        }
        return true;
    }
    
}
