UVA12714 Two Points Revisited

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=823&page=show_problem&problem=4452 [PDF](https://uva.onlinejudge.org/external/127/p12714.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12714/07d403652e22704b7e93a15283205811572cd69f.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12714/7245f7989bfc4f2010d6ab9918911367d7e87587.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12714/73c33f5c97cae0f0ed12b5351edad71173f86cd0.png)