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Cartesian tree (modified)
2022-07-06 16:45:00 【HBUcs2020】
Cartesian tree is a special kind of binary tree , Its node contains two keywords K1 and K2. First of all, Cartesian trees are about K1 Binary search tree of , That is, all of the left subtrees of the node K1 All values are higher than that of the node K1 Small value , The right subtree is bigger . Secondly, all the nodes of K2 Keywords satisfy the priority queue ( Let's set it to the minimum heap ) The sequence of requirements , That is to say, the K2 The value is higher than that of all nodes in its subtree K2 Small value .
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