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 Main 
{ 
    public static void main(String[] args) 
    {
    Scanner sc = new Scanner(System.in);
    int s = sc.nextInt(),a,b,c,d;
    s=s+1;
    d=s%10;
    c=(s%100-d)/10;
    b=(s%1000-c-d)/100;
    a=(s%10000-b-c-d)/1000;
    while(a==b||b==c||c==d||d==a||a==c||b==d)
    {
        s=s+1;
        d=s%10;
        c=(s%100-d)/10;
        b=(s%1000-c-d)/100;
        a=(s%10000-b-c-d)/1000;
    }
    System.out.println(s);
    }
}