import java.util.Scanner;

//AtCoder Beginner Contest 153
//A - Serval vs Monster
public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int H = Integer.parseInt(sc.next());
		int A = Integer.parseInt(sc.next());
		sc.close();

		long ans = (H / A);
		if (H % A != 0) {
			ans++;
		}
		System.out.println(ans);
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int H = Integer.parseInt(sc.next());
		int A = Integer.parseInt(sc.next());
		sc.close();

		long ans = (H / A);
		if (H % A != 0) {
			ans++;
		}
		System.out.println(ans);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int H = Integer.parseInt(sc.next());
		int A = Integer.parseInt(sc.next());
		sc.close();

		long ans = (H / A);
		if (H % A != 0) {
			ans++;
		}
		System.out.println(ans);
	} main {
		Scanner sc = new Scanner(System.in);
		int H = Integer.parseInt(sc.next());
		int A = Integer.parseInt(sc.next());
		sc.close();

		long ans = (H / A);
		if (H % A != 0) {
			ans++;
		}
		System.out.println(ans);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int H = Integer.parseInt(sc.next()); H Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int A = Integer.parseInt(sc.next()); A Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc sc.close() sc.close sc long ans = (H / A); ans (H / A) H A if (H % A != 0) {
			ans++;
		} H % A != 0 H % A H A 0 {
			ans++;
		} ans++ ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int H = Integer.parseInt(sc.next());
		int A = Integer.parseInt(sc.next());
		sc.close();

		long ans = (H / A);
		if (H % A != 0) {
			ans++;
		}
		System.out.println(ans);
	}
} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int H = Integer.parseInt(sc.next());
		int A = Integer.parseInt(sc.next());
		sc.close();

		long ans = (H / A);
		if (H % A != 0) {
			ans++;
		}
		System.out.println(ans);
	}
} Main
import java.util.Scanner;

//AtCoder Beginner Contest 153
//A - Serval vs Monster
public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int H = Integer.parseInt(sc.next());
		int A = Integer.parseInt(sc.next());
		sc.close();

		long ans = (H / A);
		if (H % A != 0) {
			ans++;
		}
		System.out.println(ans);
	}
}
