3_plant_dicovery

rows = int(input())
plants_data = {}
RARITY = "rarity"
RATINGS = "ratings"

for _ in range(rows):
    info = input().split("<->")
    curr_plant, rarity = info[0], int(info[1])
    if curr_plant not in plants_data:
        plants_data[curr_plant] = {}
        plants_data[curr_plant][RARITY] = 0
        plants_data[curr_plant][RATINGS] = []
    plants_data[curr_plant][RARITY] += rarity

while True:
    command = input()
    if command == "Exhibition":
        break

    data = command.replace(":", " -")
    data = data.split(" - ")
    command = data[0]
    plant = data[1]

    if plant not in plants_data:
        print("error")
        continue

    elif command == "Rate":
        rating = int(data[2])
        plants_data[plant][RATINGS].append(rating)

    elif command == "Update":
        new_rarity = int(data[2])
        plants_data[plant][RARITY] = new_rarity

    elif command == "Reset":
        plants_data[plant][RATINGS].clear()

print("Plants for the exhibition:")
for plant_name, pl_data in plants_data.items():
    current_rarity = pl_data[RARITY]
    average_rating = sum(pl_data[RATINGS]) / len(pl_data[RATINGS]) if pl_data[RATINGS] else 0
    print(f"- {plant_name}; Rarity: {current_rarity}; Rating: {average_rating:.2f}")



###################################################################
# def take_plants_data(plants_data_, rows_):
#     for _ in range(rows_):
#         plant_, rariry = input().split("<->")
#         plants_data_[plant_] = {"rarity": rariry, "ratings": []}
#     return plants_data_
#
#
# def rate(plants_data_, plant_, rating_):
#     if plant_ not in plants_data_:
#         print("error")
#     else:
#         plants_data_[plant_]["ratings"].append(rating_)
#     return plants_data_
#
#
# def update_plants_data(plants_data_, plant_, new_rarity_):
#     if plant_ not in plants_data_:
#         print("error")
#     else:
#         plants_data_[plant_]["rarity"] = new_rarity_
#     return plants_data_
#
#
# def reset(plants_data_, plant_):
#     if plant_ not in plants_data_:
#         print("error")
#     else:
#         plants_data_[plant_]["ratings"].clear()
#     return plants_data_
#
#
# def print_result(plants_data_):
#     result = ''
#     result += "Plants for the exhibition:\n"
#
#     for curr_plant, plant_information in plants_data_.items():
#         rarity = plant_information["rarity"]
#         ratings = plant_information["ratings"]
#         if ratings:
#             average_rating = sum(ratings) / len(ratings)
#         else:
#             average_rating = 0
#         result += f"- {curr_plant}; Rarity: {rarity}; Rating: {average_rating:.2f}\n"
#     return print(result)
#
#
# def main():
#     plants_data = {}
#     rows = int(input())
#
#     plants_data = take_plants_data(plants_data, rows)
#
#     while True:
#         data = input().split(": ")
#         command = data[0]
#
#         if command == "Exhibition":
#             break
#
#         elif command == "Rate":
#             plant_info = data[1].split(" - ")
#             plant, rating = plant_info[0], int(plant_info[1])
#             plants_data = rate(plants_data, plant, rating)
#
#         elif command == "Update":
#             plant_info = data[1].split(" - ")
#             plant, new_rarity = plant_info[0], int(plant_info[1])
#             plants_data = update_plants_data(plants_data, plant, new_rarity)
#
#         elif command == "Reset":
#             plant = data[1]
#             plants_data = reset(plants_data, plant)
#
#     print_result(plants_data)
#
#
# if __name__ == "__main__":
#     main()