import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in Actual solution is at the top
 *
 * @author Silviase
 */
public class Main {

  public static void main(String[] args) {
    InputStream inputStream = System.in;
    OutputStream outputStream = System.out;
    Scanner in = new Scanner(inputStream);
    PrintWriter out = new PrintWriter(outputStream);
    AServalVsMonster solver = new AServalVsMonster();
    solver.solve(1, in, out);
    out.close();
  }

  static class AServalVsMonster {

    public void solve(int testNumber, Scanner in, PrintWriter out) {
      int h = in.nextInt();
      int a = in.nextInt();
      out.println(MathLib.divRoundUp(h, a));
    }

  }

  static class MathLib {

    public static long divRoundUp(long a, long b) {
      return (a + b - 1) / b;
    }

  }
}
 import java.io.OutputStream; OutputStream java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.util.Scanner; Scanner java.util public class Main {

  public static void main(String[] args) {
    InputStream inputStream = System.in;
    OutputStream outputStream = System.out;
    Scanner in = new Scanner(inputStream);
    PrintWriter out = new PrintWriter(outputStream);
    AServalVsMonster solver = new AServalVsMonster();
    solver.solve(1, in, out);
    out.close();
  }

  static class AServalVsMonster {

    public void solve(int testNumber, Scanner in, PrintWriter out) {
      int h = in.nextInt();
      int a = in.nextInt();
      out.println(MathLib.divRoundUp(h, a));
    }

  }

  static class MathLib {

    public static long divRoundUp(long a, long b) {
      return (a + b - 1) / b;
    }

  }
} Main public static void main(String[] args) {
    InputStream inputStream = System.in;
    OutputStream outputStream = System.out;
    Scanner in = new Scanner(inputStream);
    PrintWriter out = new PrintWriter(outputStream);
    AServalVsMonster solver = new AServalVsMonster();
    solver.solve(1, in, out);
    out.close();
  } main {
    InputStream inputStream = System.in;
    OutputStream outputStream = System.out;
    Scanner in = new Scanner(inputStream);
    PrintWriter out = new PrintWriter(outputStream);
    AServalVsMonster solver = new AServalVsMonster();
    solver.solve(1, in, out);
    out.close();
  } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out Scanner in = new Scanner(inputStream); in new Scanner(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) AServalVsMonster solver = new AServalVsMonster(); solver new AServalVsMonster() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class AServalVsMonster {

    public void solve(int testNumber, Scanner in, PrintWriter out) {
      int h = in.nextInt();
      int a = in.nextInt();
      out.println(MathLib.divRoundUp(h, a));
    }

  } AServalVsMonster public void solve(int testNumber, Scanner in, PrintWriter out) {
      int h = in.nextInt();
      int a = in.nextInt();
      out.println(MathLib.divRoundUp(h, a));
    } solve {
      int h = in.nextInt();
      int a = in.nextInt();
      out.println(MathLib.divRoundUp(h, a));
    } int h = in.nextInt(); h in.nextInt() in.nextInt in int a = in.nextInt(); a in.nextInt() in.nextInt in out.println(MathLib.divRoundUp(h, a)) out.println out MathLib.divRoundUp(h, a) MathLib.divRoundUp MathLib h a int testNumber testNumber Scanner in in PrintWriter out out static class MathLib {

    public static long divRoundUp(long a, long b) {
      return (a + b - 1) / b;
    }

  } MathLib public static long divRoundUp(long a, long b) {
      return (a + b - 1) / b;
    } divRoundUp {
      return (a + b - 1) / b;
    } return (a + b - 1) / b; (a + b - 1) / b (a + b - 1) a + b a b 1 b long a a long b b public class Main {

  public static void main(String[] args) {
    InputStream inputStream = System.in;
    OutputStream outputStream = System.out;
    Scanner in = new Scanner(inputStream);
    PrintWriter out = new PrintWriter(outputStream);
    AServalVsMonster solver = new AServalVsMonster();
    solver.solve(1, in, out);
    out.close();
  }

  static class AServalVsMonster {

    public void solve(int testNumber, Scanner in, PrintWriter out) {
      int h = in.nextInt();
      int a = in.nextInt();
      out.println(MathLib.divRoundUp(h, a));
    }

  }

  static class MathLib {

    public static long divRoundUp(long a, long b) {
      return (a + b - 1) / b;
    }

  }
} public class Main {

  public static void main(String[] args) {
    InputStream inputStream = System.in;
    OutputStream outputStream = System.out;
    Scanner in = new Scanner(inputStream);
    PrintWriter out = new PrintWriter(outputStream);
    AServalVsMonster solver = new AServalVsMonster();
    solver.solve(1, in, out);
    out.close();
  }

  static class AServalVsMonster {

    public void solve(int testNumber, Scanner in, PrintWriter out) {
      int h = in.nextInt();
      int a = in.nextInt();
      out.println(MathLib.divRoundUp(h, a));
    }

  }

  static class MathLib {

    public static long divRoundUp(long a, long b) {
      return (a + b - 1) / b;
    }

  }
} Main
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in Actual solution is at the top
 *
 * @author Silviase
 */
public class Main {

  public static void main(String[] args) {
    InputStream inputStream = System.in;
    OutputStream outputStream = System.out;
    Scanner in = new Scanner(inputStream);
    PrintWriter out = new PrintWriter(outputStream);
    AServalVsMonster solver = new AServalVsMonster();
    solver.solve(1, in, out);
    out.close();
  }

  static class AServalVsMonster {

    public void solve(int testNumber, Scanner in, PrintWriter out) {
      int h = in.nextInt();
      int a = in.nextInt();
      out.println(MathLib.divRoundUp(h, a));
    }

  }

  static class MathLib {

    public static long divRoundUp(long a, long b) {
      return (a + b - 1) / b;
    }

  }
}

