UVA12222 山路 Mountain Road

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=244&page=show_problem&problem=3374 [PDF](https://uva.onlinejudge.org/external/122/p12222.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12222/70b1513c598424583f69444a5ba7168cb409cb36.png)

Input Format

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Output Format

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