import java.io.*;

public class Main {

	final static long MOD = 1000000007;
	public static void main(String[] args) throws Exception {
		// TODO 自動生成されたメソッド・スタブ

		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		String W = in.readLine();
		String[] Ws = W.split(" ");
		int H = Integer.parseInt(Ws[0]);
		int A = Integer.parseInt(Ws[1]);
		System.out.println((H+A-1)/A);
	}
} import java.io.*; io.* java public class Main {

	final static long MOD = 1000000007;
	public static void main(String[] args) throws Exception {
		// TODO 自動生成されたメソッド・スタブ

		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		String W = in.readLine();
		String[] Ws = W.split(" ");
		int H = Integer.parseInt(Ws[0]);
		int A = Integer.parseInt(Ws[1]);
		System.out.println((H+A-1)/A);
	}
} Main final static long MOD = 1000000007; MOD 1000000007 public static void main(String[] args) throws Exception {
		// TODO 自動生成されたメソッド・スタブ

		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		String W = in.readLine();
		String[] Ws = W.split(" ");
		int H = Integer.parseInt(Ws[0]);
		int A = Integer.parseInt(Ws[1]);
		System.out.println((H+A-1)/A);
	} main {
		// TODO 自動生成されたメソッド・スタブ

		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		String W = in.readLine();
		String[] Ws = W.split(" ");
		int H = Integer.parseInt(Ws[0]);
		int A = Integer.parseInt(Ws[1]);
		System.out.println((H+A-1)/A);
	} BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); in new BufferedReader(new InputStreamReader(System.in)) String W = in.readLine(); W in.readLine() in.readLine in String[] Ws = W.split(" "); Ws W.split(" ") W.split W " " int H = Integer.parseInt(Ws[0]); H Integer.parseInt(Ws[0]) Integer.parseInt Integer Ws[0] Ws 0 int A = Integer.parseInt(Ws[1]); A Integer.parseInt(Ws[1]) Integer.parseInt Integer Ws[1] Ws 1 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 String[] args args public class Main {

	final static long MOD = 1000000007;
	public static void main(String[] args) throws Exception {
		// TODO 自動生成されたメソッド・スタブ

		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		String W = in.readLine();
		String[] Ws = W.split(" ");
		int H = Integer.parseInt(Ws[0]);
		int A = Integer.parseInt(Ws[1]);
		System.out.println((H+A-1)/A);
	}
} public class Main {

	final static long MOD = 1000000007;
	public static void main(String[] args) throws Exception {
		// TODO 自動生成されたメソッド・スタブ

		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		String W = in.readLine();
		String[] Ws = W.split(" ");
		int H = Integer.parseInt(Ws[0]);
		int A = Integer.parseInt(Ws[1]);
		System.out.println((H+A-1)/A);
	}
} Main
import java.io.*;

public class Main {

	final static long MOD = 1000000007;
	public static void main(String[] args) throws Exception {
		// TODO 自動生成されたメソッド・スタブ

		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		String W = in.readLine();
		String[] Ws = W.split(" ");
		int H = Integer.parseInt(Ws[0]);
		int A = Integer.parseInt(Ws[1]);
		System.out.println((H+A-1)/A);
	}
}
