3

commands = input()
guests = {}
unliked_meals = 0

while not commands == 'Stop':
    like_dislike, guest, meal = commands.split('-')
    if like_dislike == 'Like':
        if guest not in guests:
            guests[guest] = [meal]
        elif meal not in guests[guest]:
            guests[guest].append(meal)
    elif like_dislike == 'Unlike':
        if guest in guests:
            if meal in guests[guest]:
                guests[guest].remove(meal)
                print(f"{guest} doesn't like the {meal}.")
                unliked_meals += 1
            else:
                print(f"{guest} doesn't have the {meal} in his/her collection.")
        elif guest not in guests:
            print(f'{guest} is not at the party.')
    commands = input()

for key, value in (sorted(guests.items(), key=lambda kvp: (-len(kvp[1]), kvp[0]))):
    print(f"{key}: {', '.join(value)}")
print(f'Unliked meals: {unliked_meals}')