users_dict = {}

while True:
    command = input()
    if command == 'Statistics':
        break
    command = command.split('->')
    to_do = command[0]
    if to_do == 'Add':
        name = command[1]
        if name not in users_dict:
            users_dict[name] = []
        else:
            print(f'{name} is already registered')
    elif to_do == 'Send':
        name = command[1]
        mail = command[2]
        if name not in users_dict:
            users_dict[name] = []
        users_dict[name].append(mail)
    elif to_do == 'Delete':
        name = command[1]
        if name not in users_dict:
            print(f'{name} not found!')
        else:
            del users_dict[name]

users_dict_sort = dict(sorted(users_dict.items(), key=lambda x: (-len([1]), x[0])))

print(f'Users count: {len(users_dict_sort)}')

for k, v in users_dict_sort.items():
    print(k)
    for j in v:
        print(f' - {j}')