const first = await peekFirstChunk(stream);
Kaley, who works as a personal shopper at Walmart, lives with her mother in the home she grew up in.
，这一点在WPS官方版本下载中也有详细论述
Фото: Кирилл Каллиников / РИА Новости
描述：prices[i] 为第 i 件商品价格。第 i 件商品可获得折扣 prices[j]，其中 j 是满足 j i 且 prices[j] <= prices[i] 的最小下标；若无则无折扣。返回每件商品折扣后的最终价格。