UVA13151 Rational Grading

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=871&page=show_problem&problem=5073 [PDF](https://uva.onlinejudge.org/external/131/p13151.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13151/872093f2ff6414c6f49cf2059334ac0eaeb7833f.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13151/6ebef24dc4f1b0d197901c19ace92af393545b83.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13151/e951be98cca59cac0d4eaec58126b72b9c18b25e.png)