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 DigSeq {

    
    public static void main(String[] args) {
        // TODO code application logic here
       Scanner input = new Scanner(System.in);
       int pos=input.nextInt();
       int index=0;
       String joinst="";
       
       while (joinst.length()<pos)
       {
         index++;
         joinst=joinst+index+"";
         
       }
       System.out.println(joinst.charAt(pos-1));
    }
    
}
