UVA10509 R U Kidding Mr. Feynman?

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=17&page=show_problem&problem=1450 [PDF](https://uva.onlinejudge.org/external/105/p10509.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10509/cd7b246072204fe7595613212fbc37f86878f665.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10509/07fe4b17ff3547ed7f537975154d0145c6ec8f9d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10509/413cbbeaa7c0fb062d33925bcb706da5163aa1ef.png)