UVA10466 How Far?

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=16&page=show_problem&problem=1407 [PDF](https://uva.onlinejudge.org/external/104/p10466.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10466/512ee5349944caef4aac97f095077247aba370bd.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10466/57b55b7f28a88e6d4bd1941f76f6e87fc2dbf07f.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10466/f7dee962c0d1c85e113a7dfcda8a1ea577c90c08.png)