import java.io.*;
import java.math.*;
import java.util.*;
public class Main {
 
	public static void main(String[] args) { 
		Scanner input = new Scanner(System.in);
		long H = input.nextLong();
		long A = input.nextLong();
		long ans = H/A;
		if (H%A!=0) ans++;
		System.out.println(ans);
	}	
} import java.io.*; io.* java import java.math.*; math.* java import java.util.*; util.* java public class Main {
 
	public static void main(String[] args) { 
		Scanner input = new Scanner(System.in);
		long H = input.nextLong();
		long A = input.nextLong();
		long ans = H/A;
		if (H%A!=0) ans++;
		System.out.println(ans);
	}	
} Main public static void main(String[] args) { 
		Scanner input = new Scanner(System.in);
		long H = input.nextLong();
		long A = input.nextLong();
		long ans = H/A;
		if (H%A!=0) ans++;
		System.out.println(ans);
	} main { 
		Scanner input = new Scanner(System.in);
		long H = input.nextLong();
		long A = input.nextLong();
		long ans = H/A;
		if (H%A!=0) ans++;
		System.out.println(ans);
	} Scanner input = new Scanner(System.in); input new Scanner(System.in) long H = input.nextLong(); H input.nextLong() input.nextLong input long A = input.nextLong(); A input.nextLong() input.nextLong input long ans = H/A; ans H/A H A if (H%A!=0) ans++; H%A!=0 H%A H A 0 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 input = new Scanner(System.in);
		long H = input.nextLong();
		long A = input.nextLong();
		long ans = H/A;
		if (H%A!=0) ans++;
		System.out.println(ans);
	}	
} public class Main {
 
	public static void main(String[] args) { 
		Scanner input = new Scanner(System.in);
		long H = input.nextLong();
		long A = input.nextLong();
		long ans = H/A;
		if (H%A!=0) ans++;
		System.out.println(ans);
	}	
} Main
import java.io.*;
import java.math.*;
import java.util.*;
public class Main {
 
	public static void main(String[] args) { 
		Scanner input = new Scanner(System.in);
		long H = input.nextLong();
		long A = input.nextLong();
		long ans = H/A;
		if (H%A!=0) ans++;
		System.out.println(ans);
	}	
}