*Moving*9/9

width = int(input())
lenght = int(input())
height = int(input())

free_space = True
total_free_space  = width * lenght * height
command = input()

while command != 'Done':
    box_num = int(command)
    total_free_space -= box_num
    if total_free_space < 0:
        free_space = False
        break
    command = input()

if free_space:
    print(f'{total_free_space} Cubic meters left.')
else:
    print(f'No more free space! You need {abs(total_free_space)} Cubic meters more.')