import java.util.Scanner;

public class Task4 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = Integer.parseInt(scanner.nextLine());
        int m = Integer.parseInt(scanner.nextLine());
        int h = Integer.parseInt(scanner.nextLine());

        int appartment = n*m*h;
        int boxesAll = 0;

        while(appartment >=boxesAll) {
            String boxes = scanner.nextLine();
            if (boxes.equals("Done")) {
                break;
            }
            int oneBox = Integer.parseInt(boxes);
            boxesAll+=oneBox;
        }

        if (appartment > boxesAll) {
            System.out.printf("%d Cubic meters left.",appartment-boxesAll);
        } else {
            System.out.printf("No more free space! You need %d Cubic meters more.",boxesAll-appartment);
        }
    }
}