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。
12月24日，即将完工的望京西综合交通枢纽。 新京报记者 周怀宗 摄
。同城约会对此有专业解读
This week, we're diving into the big changes at Xbox and what it all means for Microsoft's gaming future. Phil Spencer, the longtime face of Xbox, announced he's retiring last week. He'll be replaced by Microsoft's former CoreAI CEO Asha Sharma, instead of his longtime deputy Sarah Bond, who plans to leave the company. Will this change actually help the beleaguered Xbox division, or is it another example of Microsoft shoving AI into everything?
第四，中国市场邮轮产品销售模式的异化。