UVA10644 Floor Tiles

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=18&page=show_problem&problem=1585 [PDF](https://uva.onlinejudge.org/external/106/p10644.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10644/9f44aef0cab5935de968933dcf5f2d570fd293a9.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10644/8832f58cc628ab44004b35beab4b51b77e9650cb.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10644/595d0980562581afecbd5ae7259d5605dd0a5272.png)