UVA736 Lost in Space

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=9&page=show_problem&problem=677 [PDF](https://uva.onlinejudge.org/external/7/p736.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA736/177071b08f44de6444dddbe414fbabd5bcd5e21c.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA736/d106841afd90d95334000cb32bcf9cecb99598e5.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA736/46dcd66564e6bdcc4889312781984124282270ff.png)