coffeeeee

command = input()
coffee = 0
condition = False
while not command == 'END':

    if command == 'cat':
        coffee += 1
    elif command == 'CAT':
        coffee += 2
    elif command == 'dog':
        coffee += 1
    elif command == 'DOG':
        coffee += 2
    elif command == 'movie':
        coffee += 1
    elif command == 'MOVIE':
        coffee += 2
    elif command == 'coding':
        coffee += 1
    elif command == 'CODING':
        coffee += 2
    if coffee > 5:
        print(f"You need extra sleep")
        condition = True
        break
    command = input()
if not condition:
    print(coffee)