* 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)
void*next_free;
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Раскрыты подробности о договорных матчах в российском футболе18:01
Second attempt 8 days later. Thirty minutes later: