UVA427 FlatLand Piano Movers

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=6&page=show_problem&problem=368 [PDF](https://uva.onlinejudge.org/external/4/p427.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA427/cd128a3ad54c93cc9434272630665e853e95e421.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA427/108805b19df3d83fd62f040be916b785094bc81b.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA427/c322798210091cc40772dbdb2da7def98b710672.png)