import java.util.Scanner;

public class Kth {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        long k = in.nextLong(), a = 1, b, c = 1;
        while (k >= (b = 9 * a * c)) {
            k = k - b;
            a = a + 1;
            c = c * 10;
        }
        b = c + k / a;
        k = k % a;
        System.out.println((long) ((b % (long) Math.pow(10, a - k)) / Math.pow(10, a - k - 2 + 1)));
    }

}