force_book

def if_user(any_dict, any_user):
    for k, v in any_dict.items():
        for el in v:
            if el == any_user:
                return True
    return False


def remove_user(any_dict, any_user):
    for k, v in any_dict.items():
        for el in v:
            if el == any_user:
                v.remove(any_user)
    return any_dict


force_book = {}

while True:
    data = input()
    if "Lumpawaroo" in data:
        break
    elif " | " in data:
        side, user = data.split(" | ")
        if not if_user(force_book, user) and side not in force_book.keys():
            force_book[side] = []
            force_book[side].append(user)
        elif not if_user(force_book, user):
            force_book[side].append(user)

    elif " -> " in data:
        user, side = data.split(" -> ")
        if not if_user(force_book, user) and side not in force_book.keys():
            force_book[side] = []
            force_book[side].append(user)
        elif not if_user(force_book, user):
            force_book[side].append(user)
        elif if_user(force_book, user) and side in force_book:
            force_book = remove_user(force_book, user)
            force_book[side].append(user)
        elif if_user(force_book, user) and side not in force_book:
            force_book = remove_user(force_book, user)
            force_book[side] = []
            force_book[side].append(user)
        else:
            continue
        print(f"{user} joins the {side} side!")

sorted_force_book = sorted(force_book.items(), key=lambda kvp: (-len(kvp[1]), kvp[0]))
for k, v in sorted_force_book:
    if len(v) > 0:
        print(f"Side: {k}, Members: {len(v)}\n"+"\n".join(["! "+s for s in sorted(v)]))