import java.util.Scanner;

public class Spaceship {
    public static void main(String[] agrs) {
        Scanner scanner = new Scanner(System.in);

        double width = Double.parseDouble(scanner.nextLine());
        double length = Double.parseDouble(scanner.nextLine());
        double height = Double.parseDouble(scanner.nextLine());
        double average = Double.parseDouble(scanner.nextLine());

        double volumeRacket = width * length * height;
        double volumeRoom = 2 * 2 * (average + 0.40);
        int people = (int) (Math.floor(volumeRacket / volumeRoom));

        if (people >= 3 && people <= 10) {
            System.out.printf("The spacecraft holds %d astronauts.", people);
        } else if (people < 3) {
            System.out.println("The spacecraft is too small.");
        } else if (people > 10) {
            System.out.println("The spacecraft is too big.");
        }
    }
}