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 DigitsSequence {

	public static void main(String[] args) {
		DigitsSequence m = new DigitsSequence();
		m.BeautifulMatrix1();
	}

	public void BeautifulMatrix1() {
		Scanner inp = new Scanner(System.in);
		int num1 = inp.nextInt();
		StringBuffer str = new StringBuffer();
		for (int i = 1; i <= num1; i++) {
			str.append(i);
		}
		System.out.println(str.charAt(num1-1));

	}
}
