import java.util.*;

class Main {
	Scanner sc;
	
	private void calc() {
		sc = new Scanner(System.in);
		int H = sc.nextInt();
		int A = sc.nextInt();
		System.out.println((H+A-1)/A);
	}

	public static void main(String[] args) {
		new Main().calc();
	}
} import java.util.*; util.* java class Main {
	Scanner sc;
	
	private void calc() {
		sc = new Scanner(System.in);
		int H = sc.nextInt();
		int A = sc.nextInt();
		System.out.println((H+A-1)/A);
	}

	public static void main(String[] args) {
		new Main().calc();
	}
} Main Scanner sc; sc private void calc() {
		sc = new Scanner(System.in);
		int H = sc.nextInt();
		int A = sc.nextInt();
		System.out.println((H+A-1)/A);
	} calc {
		sc = new Scanner(System.in);
		int H = sc.nextInt();
		int A = sc.nextInt();
		System.out.println((H+A-1)/A);
	} sc = new Scanner(System.in) sc new Scanner(System.in) int H = sc.nextInt(); H sc.nextInt() sc.nextInt sc int A = sc.nextInt(); A sc.nextInt() sc.nextInt sc System.out.println((H+A-1)/A) System.out.println System.out System System.out (H+A-1)/A (H+A-1) H+A H A 1 A public static void main(String[] args) {
		new Main().calc();
	} main {
		new Main().calc();
	} new Main().calc() new Main().calc new Main() String[] args args
import java.util.*;

class Main {
	Scanner sc;
	
	private void calc() {
		sc = new Scanner(System.in);
		int H = sc.nextInt();
		int A = sc.nextInt();
		System.out.println((H+A-1)/A);
	}

	public static void main(String[] args) {
		new Main().calc();
	}
}
