思路：单调递减栈，找「上一个比当前价格大的元素索引」。正序遍历，弹出所有 ≤ 当前价格的索引；跨度 = 当前索引 - 栈顶索引（栈空则为 当前索引 + 1）。
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It’s true that Daggerfall included an entire continent’s worth of content, but it was mostly composed of procedurally generated liminal space. By contrast, Morrowind contained just a single island—not even the entire province after which the game was named. The difference was that it was handcrafted.