Introduction In recent years, smart cities have become a popular concept as technology continues to shape modern life. These cities use advanced systems to improve transportation, communication, and public services. However, living in a smart city has both benefits and drawbacks. Main body paragraph 1 – Advantages On the one hand, smart cities offer many advantages. Firstly, they provide better living conditions through efficient public services such as smart traffic lights and waste management systems, which make daily life more convenient. Secondly, smart technologies help reduce pollution and save energy, creating a cleaner and more sustainable environment for residents. Main body paragraph 2 – Disadvantages On the other hand, there are also some disadvantages. One common issue is the high cost of developing and maintaining smart technologies, which can increase living expenses. Moreover, the use of digital systems raises concerns about data privacy and security, as personal information can be easily collected and misused. Conclusion In conclusion, living in a smart city brings both opportunities and challenges. While it improves comfort and sustainability, it also requires careful management of costs and privacy. Overall, smart cities represent the future of urban living if technology is used responsibly.

a = float(input("Nhập số thực a: ")) print("Giá trị tuyệt đối của a là:", abs(a))

n = int(input("Nhập số tự nhiên n: ")) S = 0 for i in range(n): if i % 2 == 0 and i % 5 == 0: S += i print("Tổng S =", S)

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