h->next_free = free_table[bucket];
思路：找「右侧第一个 ≤ cur」的元素 → 弹出所有 cur 的元素，栈顶即为折扣。最终价格 = cur - 折扣（有则）或 cur（无则）。
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公安机关中初次从事治安管理处罚决定法制审核的人员，应当通过国家统一法律职业资格考试取得法律职业资格。
Раскрыты подробности о договорных матчах в российском футболе18:01
Some of the biggest names in music are performing at the Brit Awards this weekend. Sure, there are a lot of awards to be presented, but that's not really what the Brits is about. It's about incredible performances, risqué jokes from the host, and celebrities behaving very badly. It's always a messy night (in the best kind of way).