Elevator

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {


        Scanner scanner = new Scanner(System.in);

        int people = Integer.parseInt(scanner.nextLine());
        int capacity = Integer.parseInt(scanner.nextLine());

        int coursesFull =  (int) Math.ceil((double) people / capacity);

        System.out.println(coursesFull);
    }
}