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 Practice {


    public static void main(String[] args) {
     
        Scanner input = new Scanner(System.in);
        int y=input.nextInt();
        while(true){
            y=y+1;
            int a=y/1000;
            int b=y/100%10;
            int c=y/10%10;
            int d=y%10;
            if(a!=b && a!=c && a!=d && b!=c && b!=d && c!=d)
                break; 
            }
        System.out.println(y);
        }
        
    }