UVA12571 Brother & Sisters!

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=441&page=show_problem&problem=4016 [PDF](https://uva.onlinejudge.org/external/125/p12571.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12571/245368e9fa08add17a63cdf6979867405173c78f.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12571/24a5eee4c6691f234d84a9df6796b59bc3848539.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12571/837a93a743fcfe7cab486e05324b84d73918fdf0.png)