02. Friends_maintenance , Mid Exam Fundamentals Python June.2022

# WITHOUT JUDGE TESTING !
# 02. Friends_maintenance , Mid Exam Fundamentals Python June.2022

def is_index_valid(some_list, some_index):
    if 0 <= some_index < len(some_list):
        return True
    return False


def is_name_valid(some_list, some_name):
    if (some_name in some_list) and (some_name != 'Blacklisted') and (some_name != 'Lost'):
        return True
    return False


data = input().split(", ")
command = input()

blacklisted_names = []
lost_names = []

while not command == 'Report':
    details = command.split(' ')

    if details[0] == 'Blacklist':
        move_to_blacklist = details[1]
        if move_to_blacklist in data:
            index_name = data.index(move_to_blacklist)
            data[index_name] = 'Blacklisted'
            blacklisted_names.append(move_to_blacklist)
            print(f'{move_to_blacklist} was blacklisted.')
        else:
            print(f'{move_to_blacklist} was not found.')

    elif details[0] == 'Error':
        index = int(details[1])
        name = data[index]
        if is_index_valid(data, index) and is_name_valid(data, name):
            data[index] = 'Lost'
            print(f'{name} was lost due to an error.')
            lost_names.append(name)

    elif details[0] == 'Change':
        change_index = int(details[1])
        new_name = details[2]
        if is_index_valid(data, change_index):
            data[change_index] = new_name

    command = input()

print(f'Blacklisted names: {len(blacklisted_names)}')
print(f'Lost names: {len(lost_names)}')
print(' '.join(data))