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.io.*;
import java.util.*;
import java.lang.*;
public class NewClass {
    public static void main(String args[])throws Exception{
    Scanner sc = new Scanner(System.in);
   int x= sc.nextInt();
   String a="";
   int i=0;
   for(i=1;i<3000;i++){
    a=a+i;
}
        System.out.println(a.charAt(x-1));
    }
   

           
   
}
