import java.util.Scanner;

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

        int shir = Integer.parseInt(sc.nextLine());
        int dal = Integer.parseInt(sc.nextLine());
        int vis = Integer.parseInt(sc.nextLine());
        int staq = shir * dal * vis;

        String isDone = "";

        while (!isDone.equals("Done")) {
            isDone = sc.nextLine();
            if (isDone.equals("Done")){
                break;
            }
            int kashon = Integer.parseInt(isDone);
            staq -= kashon;

            if (staq <= 0) {
                break;
            }
        }   if (isDone.equals("Done")) {
            System.out.printf("%d Cubic meters left.", Math.abs(staq));
        } else {
            System.out.printf("No more free space! You need %d Cubic meters more.", Math.abs(staq));
        }

        }



    }