04. Elevator

using System;

namespace _04._Elevator
{
    class Elevator
    {
        static void Main(string[] args)
        {
            //Calculate how many courses will be needed to elevate n persons by using an elevator of capacity of p persons. The input
            //holds two lines: the number of people n and the capacity p of the elevator.
            int persons = int.Parse(Console.ReadLine());
            int capacity = int.Parse(Console.ReadLine());

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