UVA143 Orchard Trees

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=3&page=show_problem&problem=79 [PDF](https://uva.onlinejudge.org/external/1/p143.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA143/3a830150ac29ef681876c3dca4d3f3e9907f5b8d.png)

Input Format

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Output Format

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