package com.company;

import java.util.Scanner;

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

        int width = Integer.parseInt(scanner.nextLine());
        int length = Integer.parseInt(scanner.nextLine());
        int height = Integer.parseInt(scanner.nextLine());

        int volume = width * length * height;

        String cmd = scanner.nextLine();
        while (!cmd.equals("Done")) {
            int box = 0;
            try {
                box = Integer.parseInt(cmd);
            } catch (Exception e) {
                continue;
            }
            volume -= box;
            if (volume < 0) {
                System.out.printf("No more free space! You need %d Cubic meters more.", Math.abs(volume));
                break;
            }
            cmd = scanner.nextLine();
        }

        if (volume >= 0) {
            System.out.printf("%d Cubic meters left.", volume);
        }
    }
}