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 JavaApplication21 {
 
    public static void main(String[] args) {
        int k , c=0 ;  String  s="";
       Scanner in=new Scanner(System.in);
       k = in.nextInt();
  
        for(int i=0 ; i < 10000 ; i++){
          s+=String.valueOf(i);
        }
       System.out.println(s.charAt(k));
    }
    
}