using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp30
{
    class Program
    {
        static void Main(string[] args)
        {
            double widthSpaceship = double.Parse(Console.ReadLine());
            double lengthSpaceship = double.Parse(Console.ReadLine());
            double highSpaceship = double.Parse(Console.ReadLine());
            double highAustronafts = double.Parse(Console.ReadLine());

            double totalSpaceship = widthSpaceship * lengthSpaceship * highSpaceship;
            double roomSpace = (highAustronafts + 0.40) * 2 * 2;
            double space = Math.Floor(totalSpaceship / roomSpace);
            if (space >= 3 && space <= 10)
            {
                Console.WriteLine($"The spacecraft holds {Math.Floor(space)} astronauts.");

            }
            else if (space < 3)
            {
                Console.WriteLine("The spacecraft is too small.");
            }
            else if (space > 10)
            {
                Console.WriteLine("The spacecraft is too big.");
            }
        }
    }
}