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 hello
{
    public static void main(String []args)
    {
        Scanner sc=new Scanner(System.in);
        //String s=sc.next();
        int n=sc.nextInt();
        String s="";
        int i=1;
        while(i<=5000)
        {
                s=s+Integer.toString(i);
                i++;
        }
      
        System.out.println(s.charAt((n-1)));
    }
}