UVA12810 Sumthing

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=861&page=show_problem&problem=4675 [PDF](https://uva.onlinejudge.org/external/128/p12810.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12810/75e902e587125089f4f2d20947ff86cab3d001a9.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12810/39afed801a4dc706622a0554761794e3832d04e5.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12810/fa4533c8bfe56593a899d556f1934d69c427d062.png)