Let's write all the positive integer numbers one after another from 1 without any delimiters (i.e. as a single string). It will be the infinite sequence starting with 123456789101112131415161718192021222324252627282930313233343536...

Your task is to print the k-th digit of this sequence.

Input

The first and only line contains integer k (1 ≤ k ≤ 10000) — the position to process (1-based index).

Output

Print the k-th digit of the resulting infinite sequence.

Examples

Input


7


Output


7


Input


21


Output


5
import java.util.*;
public class abc
{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        int k=sc.nextInt();
        int i;
        String ans="";
        for(i=1;i<=10000;i++)
        {
            ans=ans+Integer.toString(i); 
        }
        System.out.println(ans.charAt(k-1));
    }
}