UVA13084 Cameras as Invigilators

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=866&page=show_problem&problem=4982 [PDF](https://uva.onlinejudge.org/external/130/p13084.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13084/7ef9e652c1dcb93abe39cc138d9844ed32098890.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13084/cf2b085f211d695863a32a56092cc49f861fb6a6.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13084/4bd6a99197edceb54d8917030a000ad612039fbf.png)