UVA11935 Through the Desert

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=229&page=show_problem&problem=3086 [PDF](https://uva.onlinejudge.org/external/119/p11935.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11935/0b5aa64ce3dd5390b94dff35e230160358ebfdcb.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11935/bc7c4f8990ea0d40bb96188d358f8f244f0f5992.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11935/af2ce60c042c3ebce4ae8963d82ebe2161630ecd.png)