while True:
    username = input('请输入您的代号：')
    password = input('请输入您的密码：')

    # 检查用户名和密码是否正确
    if username == '007' and password == '妈咪妈咪哄':
        print('登录成功！')
        break
    if username != '007':
        print('代号错误！请重新输入')
        continue
    if password != '妈咪妈咪哄':
        print('密码记错了吧！请重新输入')
print('特工007，欢迎回家')