1151 LCA in a Binary Tree C++版

1151 LCA in a Binary Tree C++版 1.題意 給出中序和先序遍歷序列，讓你找出給定的查詢記錄的最小父節點，如果給定的值不存在，則按照相應的格式輸出。指定的格式如下： For each given pair of U and V, print in a line LCA of U and V is A. if the LCA is found and A is the ke

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