栈（stack）是先进后出的数据结构。单调栈在入栈时通过一定规则保持栈内元素有序（单调递增或单调递减），从而把「找左侧/右侧第一个更大/更小元素」从 O(n²) 降到 O(n)。
"The big thing will be seeing friends and family and the people who they were expecting to spend Christmas with," said Helen Sharman, Britain's first astronaut.
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与此同时，和誉医药等本土药企也在精准靶向赛道加速布局，新一代疗法的比拼已然拉开帷幕。从FIC到精准治疗的BIC，谁能登顶，定义ACH下一代治疗标准？