UVA267 Of(f) Course!

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=4&page=show_problem&problem=203 [PDF](https://uva.onlinejudge.org/external/2/p267.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA267/0e83c691f56a6d16cbe3adf046a9b4a61c90f639.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA267/5639784f251f2d1702d3214d0a69d0f4dd98762f.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA267/21e19367144fa9f44f8725b43eb42bc0006a79b4.png)