The pianist /new/

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

for _ in range(n):
    piece_info = input().split("|")
    piece_name, composer, key = piece_info
    pieces[piece_name] = {"composer": composer, "key": key}

while True:
    command = input().split("|")
    action = command[0]

    if action == "Stop":
        break

    piece_name = command[1]

    if action == "Add":
        composer = command[2]
        key = command[3]
        if piece_name not in pieces:
            pieces[piece_name] = {"composer": composer, "key": key}
            print(f"{piece_name} by {composer} in {key} added to the collection!")
        else:
            print(f"{piece_name} is already in the collection!")

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

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

for piece_name, info in pieces.items():
    composer = info["composer"]
    key = info["key"]
    print(f"{piece_name} -> Composer: {composer}, Key: {key}")