UVA12202 Haunted Graveyard

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=244&page=show_problem&problem=3354 [PDF](https://uva.onlinejudge.org/external/122/p12202.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12202/7d7f37c6b2eec15cc3d9b39497bb9906213d4a28.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12202/86b7ae0b377faf8a0e2213c429104575e4f75746.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12202/02927a474ffd7f726b4252dc826cee70cf3d7c6d.png)