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
//  أليلتنا بذي حسم انيري*** إذا انت انقضيت فلا تحوري
//فإن يكن بالذنائب طال ليلي *** فقد ابكي من الليل القصيري 
import java.util.Scanner;
public class JavaApplication1 {
    public static void main(String[] args) {
       Scanner read = new Scanner(System.in);
       int k;
       k=read.nextInt();
       String s="";
        for(int i=1;i<=3000;i++)
        {
            s=s+Integer.toString(i); 
        }
        System.out.println(s.charAt(k-1));
    }     
}