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.Scanner;

public class First
{
   public static void main(String[] args)
     {
     Scanner in= new Scanner(System.in);
     int number=in.nextInt();
     
     String big_number="0";
     for(int i=1;i<=number;i++)
     {
       String numberAsString = Integer.toString(i);
       big_number = big_number+numberAsString;
     }
     
     String final_num=big_number.substring(number,number+1);
     
     System.out.print(final_num);
   }
}
  