
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		long monsterHP = scan.nextLong();
		long servalATK = scan.nextLong();
		scan.close();

		long mod = monsterHP % servalATK;
		long ans  = monsterHP / servalATK;
		if (mod > 0) {
			ans ++;
		}
		System.out.println(ans);
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		long monsterHP = scan.nextLong();
		long servalATK = scan.nextLong();
		scan.close();

		long mod = monsterHP % servalATK;
		long ans  = monsterHP / servalATK;
		if (mod > 0) {
			ans ++;
		}
		System.out.println(ans);
	}
} Main public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		long monsterHP = scan.nextLong();
		long servalATK = scan.nextLong();
		scan.close();

		long mod = monsterHP % servalATK;
		long ans  = monsterHP / servalATK;
		if (mod > 0) {
			ans ++;
		}
		System.out.println(ans);
	} main {

		Scanner scan = new Scanner(System.in);

		long monsterHP = scan.nextLong();
		long servalATK = scan.nextLong();
		scan.close();

		long mod = monsterHP % servalATK;
		long ans  = monsterHP / servalATK;
		if (mod > 0) {
			ans ++;
		}
		System.out.println(ans);
	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) long monsterHP = scan.nextLong(); monsterHP scan.nextLong() scan.nextLong scan long servalATK = scan.nextLong(); servalATK scan.nextLong() scan.nextLong scan scan.close() scan.close scan long mod = monsterHP % servalATK; mod monsterHP % servalATK monsterHP servalATK long ans  = monsterHP / servalATK; ans monsterHP / servalATK monsterHP servalATK if (mod > 0) {
			ans ++;
		} mod > 0 mod 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 scan = new Scanner(System.in);

		long monsterHP = scan.nextLong();
		long servalATK = scan.nextLong();
		scan.close();

		long mod = monsterHP % servalATK;
		long ans  = monsterHP / servalATK;
		if (mod > 0) {
			ans ++;
		}
		System.out.println(ans);
	}
} public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		long monsterHP = scan.nextLong();
		long servalATK = scan.nextLong();
		scan.close();

		long mod = monsterHP % servalATK;
		long ans  = monsterHP / servalATK;
		if (mod > 0) {
			ans ++;
		}
		System.out.println(ans);
	}
} Main

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		long monsterHP = scan.nextLong();
		long servalATK = scan.nextLong();
		scan.close();

		long mod = monsterHP % servalATK;
		long ans  = monsterHP / servalATK;
		if (mod > 0) {
			ans ++;
		}
		System.out.println(ans);
	}
}
