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 Main {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
int n;
Scanner in=new Scanner(System.in);
n=in.nextInt();
boolean flag1=false;
boolean flag2=true;
int m=n;
int[] n1=new int[10];
while(flag1==false)
{
    m++;
    String no=m+"";
    flag2=true;
    for(int i=0;i<no.length();i++)
    {
        int t=Integer.parseInt(Character.toString(no.charAt(i)));
        n1[t]++;
        if(n1[t]>1)
        {
            flag2=false;
            break;
        }
        
    }
    for(int i=0;i<10;i++)
    {
        n1[i]=0;
    }
    if(flag2==true)
    {
        flag1=true;
        System.out.println(m);
        return ;
    }
}
    }

}
