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;
/**
 *
 * @author gust0014574
 */
public class CFT {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner inp=new Scanner(System.in);
        int y=inp.nextInt();
        int yy=y+1;
        int a=yy%10;
        int x=yy/10;
        int b=x%10;
        x/=10;
        int c=x%10;
        int d = x/10;
        while(a==b || a==c || a==d || b==c || b==d || c==d){
            yy++;
            a=yy%10;
            x=yy/10;
            b=x%10;
            x/=10;
            c=x%10;
            d = x/10;
        }
        System.out.println(yy);
    }   
}