import java.util.Scanner;

public class Stairs {
	public static void main(String[] args) {
		int s_row_spot;//s段目
		int steps_f;//一階層分に相当する段数f

		Scanner sc = new Scanner(System.in);
		s_row_spot = sc.nextInt();
		steps_f = sc.nextInt();
		System.out.println(s_row_spot / steps_f + 1);
		sc.close();

	}
}