UVA10110 Light, more light

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=13&page=show_problem&problem=1051 [PDF](https://uva.onlinejudge.org/external/101/p10110.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10110/efa9307b4f3b789a9be64e4eeaa2c0d0dd4fada2.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10110/1d8f4887c54b229dd47d86c43f8bf98d4ec4c3c4.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10110/e2a75986a24777fa18d900c5f04ec10f3fa6aaa3.png)