Lenovo kicked off the year with a dominating presence at the Consumer Electronics Show, where it unveiled a new Qira personal AI agent, over a dozen new laptops, and a slew of new PC accessories. (It went home with three Best of CES awards.) Today, the world's biggest PC maker is expanding its 2026 portfolio even further with a fresh crop of hardware for Mobile World Congress in Barcelona.
描述：设计 StockSpanner 类。每次调用 next(price) 时，返回当日价格的「跨度」：从今天往回数，价格 ≤ 今日价格的最大连续天数（含今天）。
，这一点在电影中也有详细论述
https://electronics.stackexchange.com/questions/505361/how-many-excess-electrons-are-in-a-modern-slc-flash-memory-cell，详情可参考PDF资料
types now defaults to []，这一点在电影中也有详细论述