sss

width = int(input())
length = int(input())
height = int(input())
total_space = width * length * height

width_of_kashon = 1
length_of_kashon = 1
height_of_kashon = 1
total_space_of_box = 1

number_of_boxes = str(input())
broi_kashoni = 0

while number_of_boxes != "Done":
    kashoni = int(number_of_boxes)
    broi_kashoni += kashoni

    if total_space < broi_kashoni:
        difference = abs(total_space - broi_kashoni)
        print(f"No more free space! You need {difference} Cubic meters more.")
        break
    number_of_boxes = input()

if number_of_boxes == "Done":
    difference = abs(total_space - broi_kashoni)
    print(f"{difference} Cubic meters left.")