import java.util.Scanner;
public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int hp = scan.nextInt();
		int attack = scan.nextInt();
		int re = 0;

		do {

			hp -= attack;
			re++;
		}while(hp > 0);

		System.out.println(re);
		scan.close();

	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int hp = scan.nextInt();
		int attack = scan.nextInt();
		int re = 0;

		do {

			hp -= attack;
			re++;
		}while(hp > 0);

		System.out.println(re);
		scan.close();

	}

} Main public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int hp = scan.nextInt();
		int attack = scan.nextInt();
		int re = 0;

		do {

			hp -= attack;
			re++;
		}while(hp > 0);

		System.out.println(re);
		scan.close();

	} main {

		Scanner scan = new Scanner(System.in);

		int hp = scan.nextInt();
		int attack = scan.nextInt();
		int re = 0;

		do {

			hp -= attack;
			re++;
		}while(hp > 0);

		System.out.println(re);
		scan.close();

	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int hp = scan.nextInt(); hp scan.nextInt() scan.nextInt scan int attack = scan.nextInt(); attack scan.nextInt() scan.nextInt scan int re = 0; re 0 do {

			hp -= attack;
			re++;
		}while(hp > 0); hp > 0 hp 0 {

			hp -= attack;
			re++;
		} hp -= attack hp attack re++ re System.out.println(re) System.out.println System.out System System.out re scan.close() scan.close scan String[] args args public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int hp = scan.nextInt();
		int attack = scan.nextInt();
		int re = 0;

		do {

			hp -= attack;
			re++;
		}while(hp > 0);

		System.out.println(re);
		scan.close();

	}

} public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int hp = scan.nextInt();
		int attack = scan.nextInt();
		int re = 0;

		do {

			hp -= attack;
			re++;
		}while(hp > 0);

		System.out.println(re);
		scan.close();

	}

} Main
import java.util.Scanner;
public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int hp = scan.nextInt();
		int attack = scan.nextInt();
		int re = 0;

		do {

			hp -= attack;
			re++;
		}while(hp > 0);

		System.out.println(re);
		scan.close();

	}

}
