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。
p(x) of degree at most that interpolates these points.
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As many as one thousand members of the Formula One circus have been forced into last-minute travel changes to get to Melbourne’s opening round in the wake of the escalating crisis in the Middle East, and some are set to miss the start of the season entirely.
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比起其他可能会引发用户厌恶的变化，触控屏是一个相对更微妙的新功能：喜欢的人会被吸引购买，不喜欢的人也完全可以无视，继续使用键盘和触控板。