if (n <= 1) return n;
What are the best things to buy during Amazon's Big Spring sale?An Amazon sale means some of the best savings will be on Amazon devices like Echos, Fire TVs, and Kindles, but the reach of its spring sale goes far beyond that. With the focus on the spring season, expect to see lots of savings on outdoor gear like furniture, grills, tents, and power stations. Plus, there will be plenty of classic big sale savings on TVs, laptops, headphones, and tablets.
Blue: Person in common，这一点在51吃瓜中也有详细论述
# Switch to agent mode，更多细节参见服务器推荐
Can be created from many different programming languages.
interior_style:，推荐阅读heLLoword翻译官方下载获取更多信息