UVA10641 照亮体育馆 Barisal Stadium

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=18&page=show_problem&problem=1582 [PDF](https://uva.onlinejudge.org/external/106/p10641.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10641/58b2837360d2303c95a84bab1d6df8c47fb235bc.png)

Input Format

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Output Format

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