National Court

using System;

namespace National_Court
{
    class Program
    {
        static void Main(string[] args)
        {
            int firstEmployee = int.Parse(Console.ReadLine());
            int secondEmployee = int.Parse(Console.ReadLine());
            int thirdEmployee = int.Parse(Console.ReadLine());
            int peopleCount = int.Parse(Console.ReadLine());

            double hours = Math.Ceiling((double)peopleCount / (firstEmployee + secondEmployee + thirdEmployee));

            if (hours > 3)
            {
                hours += Math.Floor(hours / 3.0);
            }
                Console.WriteLine($"Time needed: {hours}h.");
        }
    }
}