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.io.*;
import java.util.*;

public class p271a
{
    public static void main(String args[])
    {
        Scanner sc = new Scanner(System.in);
        System.out.println();
        long y = sc.nextLong();
        for(long z=y+1;z<10000;z++)
        {
            if(check(z)==1)
            {
                System.out.println(z);
                break;
            }
        }
    }

    public static long check(long y)
    {
        long a = y%10;
        long b = (y/10)%10;
        long c = (y/100)%10;
        long d = y/1000;
        if((a!=b)&&(a!=c)&&(a!=d)&&(b!=c)&&(b!=d)&&(c!=d)) return 1;
        else return 0;
    }
}