[HackerEarth] There are N trees in a particular region of forest with the trees number from 1 to N. Tarzan, our hero is standing on Tree Number 1. Tarzan wants to have a sea view from the top of a tre - 题解

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题目信息
题号 P17720
标题 [HackerEarth] There are N trees in a particular region of forest with the trees number from 1 to N. Tarzan, our hero is standing on Tree Number 1. Tarzan wants to have a sea view from the top of a tre
难度 普及
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