03. The Pianist

number_of_pieces = int(input())
pieces = {}

for piece in range(number_of_pieces):
    information_about_pieces = input().split("|")
    current_piece = information_about_pieces[0]
    composer = information_about_pieces[1]
    key = information_about_pieces[2]
    pieces[current_piece] = [composer, key]

receiving_commands = True
while receiving_commands:
    command = input()
    if command == "Stop":
        receiving_commands = False
        break

    command = command.split("|")
    if command[0] == "Add":
        add_piece = command[1]
        add_composer = command[2]
        add_key = command[3]
        if add_piece not in pieces:
            pieces[add_piece] = [add_composer, add_key]
            print(f"{add_piece} by {add_composer} in {add_key} added to the collection!")
        else:
            print(f"{add_piece} is already in the collection!")

    elif command[0] == "Remove":
        remove_piece = command[1]
        if remove_piece in pieces:
            del(pieces[remove_piece])
            print(f"Successfully removed {remove_piece}!")
        else:
            print(f"Invalid operation! {remove_piece} does not exist in the collection.")

    elif command[0] == "ChangeKey":
        change_piece = command[1]
        new_key = command[2]
        if change_piece in pieces:
            pieces[change_piece][1] = new_key
            print(f"Changed the key of {change_piece} to {new_key}!")
        else:
            print(f"Invalid operation! {change_piece} does not exist in the collection.")

for name in pieces:
    composer = pieces[name][0]
    key = pieces[name][1]
    print(f"{name} -> Composer: {composer}, Key: {key}")