package yukicoder;

import java.util.Scanner;

public class Yukicoder {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int stages = sc.nextInt();
		int home = sc.nextInt();
		int i = 1;

		while (0 <= (stages - home)) {
			stages -= home;
			i++;
		}

		System.out.println(i);

	}
}