UVA13014 Keep it energized

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=866&page=show_problem&problem=4902 [PDF](https://uva.onlinejudge.org/external/130/p13014.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13014/88321dbf5cf7273b92873a7b27fb9a8020d4a790.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13014/241a12ec0fef7d28aff2f28232d37509ff0f7b53.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13014/7efc19442ba94e3a89997129c0b8c43e517e8143.png)