UVA12023 Escher and Tessellations

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=242&page=show_problem&problem=3174 [PDF](https://uva.onlinejudge.org/external/120/p12023.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12023/f5d152597fd1fc8a8178fb4c35cc31fe09ad75a1.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12023/8b97c1da54f5db6a2a23153ffe2bb0053fb330b1.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12023/d989d9f7dbe9f95f9f5694acf84383cc606bfc5c.png)