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.*;
public class Program{
   public static void main(String args[]){
      Scanner sc=new Scanner(System.in);
      List<Integer> list = new ArrayList<>();
      String str="";
      for(int i=1; i<=10000; i++){
          str += String.valueOf(i);
      }
      int n = sc.nextInt();
      System.out.println(str.charAt(n-1));
   }
}