UVA11122 Tri Tri

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=23&page=show_problem&problem=2063 [PDF](https://uva.onlinejudge.org/external/111/p11122.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11122/9b4138f5090f17422676815bce86cc3096258ead.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11122/8e617343caebb34ee9d9649a662fe8a72988ea0c.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11122/5038ab78e19ac1b12e945de49d6547902f1b2b22.png)