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 Test {
    
    private static Scanner scanner = new Scanner(System.in);
    public static void main(String[] args) {
        
        int year = scanner.nextInt();
        int year2 = year +1;
        boolean b = true;
        h:
        for (int k = year2; k < 10000; k++) {
            b = true;
            String y2 = Integer.toString(k);
            for (int i = 0; i < y2.length()-1; i++) {
                for (int j = i + 1; j < y2.length(); j++) {
                    if ( y2.charAt(i) == y2.charAt(j) ) {
                        b = false;
                    }
                }
                
                
                
            }
            if (b == true) {
                System.out.println(k);
                break h;
            }
            
        }
        
        
    
    }
}