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He went on to freelance for clothing companies and start-ups before launching his own brand in 2021.

if (done) break;

，详情可参考91视频

* 核心思路：单调递减栈（找「上一个比当前价格大的元素索引」），时间复杂度O(n)，空间复杂度O(n)

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self.sleep_max = 1.0