UVA12203 Slalom

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=244&page=show_problem&problem=3355 [PDF](https://uva.onlinejudge.org/external/122/p12203.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12203/543d8419e19bcbef1e5fe0a970a13884c290ceca.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12203/fed9a1832dc40041fd83618542a574e974505891.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12203/ca62f29996c2e58cfeb85f12034394d6de6393a7.png)