f

width = int(input())
length = int(input())
height = int(input())
free_space = width * length * height
initial_space = free_space
total_space = 0
rest = 0
command = input()

while command != "Done" and free_space - int(command) > 0:
    boxes = int(command)
    free_space -= boxes
    command = input()

if command == 'Done':
    print(f"{free_space} Cubic meters left.")
else:
    rest = abs(free_space - int(command))
    print(f"No more free space! You need {rest} Cubic meters more.")