UVA12805 Raiders of the Lost Sign

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=861&page=show_problem&problem=4670 [PDF](https://uva.onlinejudge.org/external/128/p12805.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12805/fbae757174f6172f94f26cc11fb44e64d406a6e5.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12805/b9d4366b3d0ab8eac2878165ea75f2cf2b7155a8.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12805/39f6b1405c98e6eadfb951b62e362cb0d680854b.png)