UVA11430 ETS Problem setting

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=26&page=show_problem&problem=2425 [PDF](https://uva.onlinejudge.org/external/114/p11430.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11430/b883335e47cbad1263ae47440de0cfbe4d589644.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11430/678120bbc018145f6561337ad9c8dd252f34bad3.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11430/5ba9a2fa4d7a57b318526ea8474f4be9efefdede.png)