UVA12791 Lap

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=823&page=show_problem&problem=4656 [PDF](https://uva.onlinejudge.org/external/127/p12791.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12791/1c8596349aea58515945785d162464f6f3a8d877.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12791/d8cda30381e48c5c9d6b5a9cfdd7f4d6de63fbc3.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12791/18ff564c5cb565d0da24d0b3b79a8a9cb51d895d.png)