UVA10927 Bright Lights

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=21&page=show_problem&problem=1868 [PDF](https://uva.onlinejudge.org/external/109/p10927.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10927/5a3165f4beea2acb74a25ebb6084ea5250e79ae7.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10927/44863b1746467d8f2302e498b62b0ae0544f2180.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10927/87f3c57b9b33a9d26e3cd48baedd54912b97b253.png)