3та

lines = input()
guests = []
dislike_list =[]
while not lines == "Stop":
    command_data = lines.split("-")
    command = command_data[0]
    if command == "Like":
        guest = command_data[1]
        meal = command_data [2]
        if guest not in guests:
            guests[guest] = []
        if meal not in guests[guest]:
            guests[guest].append(meal)

    elif command == "Unlike":
        guest = command_data[1]
        meal = command_data[2]

        if guest not in guests:
            print(f"{guest} is not at the party.")
        else:
            if meal in guests[guest]:
                unlike_meal = guests[guest].pop()
                dislike_list.append(unlike_meal)
                print(f"{guest} doesn't like the {meal}.")
            else:
                print(f"{guest} doesn't have the {meal} in his/her collection.")


    lines = input()

sorted_guests = sorted(guests.items(),key=lambda x: (x[1],x[0]),reverse=True)

for key, value in sorted_guests:
    print(f"{key}: {', '.join(value)}")

print(f"Unliked meals: {len(dislike_list)}")