using System;

namespace _04._Elevator
{
    class Program
    {
        static void Main(string[] args)
        {
            //int persons = int.Parse(Console.ReadLine());
            //int capacity = int.Parse(Console.ReadLine());

            //int courses = (int)Math.Ceiling((double)persons / capacity);

            //Console.WriteLine($"{courses}");

            int persons = int.Parse(Console.ReadLine());
            int capacity = int.Parse(Console.ReadLine());

            int courses = persons / capacity;

            if (persons % capacity != 0)
            {
                courses++;
            }
            Console.WriteLine($"{courses}");
        }
    }
}