import java.util.Scanner;

public class Demoo {
    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 high = Integer.parseInt(scanner.nextLine());
        String imput = scanner.nextLine();
        int all = width * length * high;
        int count = 0;

        while (!"Done".equals(imput)){
            int neededMeters = Integer.parseInt(imput);
            count += neededMeters;

            if (all < count){
                int noFreeSpace = Math.abs(count - all);
                System.out.println(String.format("No more free space! You need %d Cubic meters more.", noFreeSpace));
            }

            imput = scanner.nextLine();
        }
        if (imput.equals("Done") && all > count){
            int freeSpace = all - count;
            System.out.println(String.format("%d Cubic meters left.", freeSpace));
        }
    }
}