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 Main {

    public static void main(String[] args) {

       Scanner sc = new Scanner(System.in);
        int k = sc.nextInt();
        StringBuilder line = new StringBuilder();

        for (int i = 0; i <= 2800; i++)
            line.append(i);

        System.out.print(line.charAt(k));

    }
}