UVA13165 Cairo Corridor

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=871&page=show_problem&problem=5065 [PDF](https://uva.onlinejudge.org/external/131/p13165.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13165/37d7defb5241a62678115402601295651f8ca142.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13165/8361695406fafe4556afbfcd251bef0ea7178a52.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13165/36f1db5bb0eaf13911eda03f9179c166bed341b9.png)