UVA12861 Help cupid

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=861&page=show_problem&problem=4726 [PDF](https://uva.onlinejudge.org/external/128/p12861.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12861/a881a5d42001dfc62b696ffca555629c279c2258.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12861/8645841cf266b3d5fef54f0754bfc93ad898335a.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12861/a63549c3801883f796b91823dc59b65a374dbf89.png)