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 test1177a {
    public  static  void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int k =  sc.nextInt();

        String str ="";
        for(int i=1; i<10000; i++){
            str = str + i;
        }
        System.out.println(str.charAt(k-1));
    }
}
