UVA10281 Average Speed

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=14&page=show_problem&problem=1222 [PDF](https://uva.onlinejudge.org/external/102/p10281.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10281/e8518e41688ab9651106f588773311e603158898.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10281/05be061db2dd4eac3aaabe27fd9ea953488459a4.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10281/10aeb554768a61c5b5d2c9cf658c634ace7226c7.png)