09. Fruit or Vegetable

product = input()

is_fruit = product == "banana" or product == "apple" or product == "kiwi" or product == "cherry" or product == "lemon" or product == "grapes"
is_vegetable = product == "tomato" or product == "cucumber" or product == "pepper" or product == "carrot"

if is_fruit:
    print('fruit')
elif is_vegetable:
    print("vegetable")
else:
    print("unknown")