UVA10859 放置街灯 Placing Lampposts

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=20&page=show_problem&problem=1800 [PDF](https://uva.onlinejudge.org/external/108/p10859.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10859/054b156fd9096af6de53371dd0ff6e189627191d.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10859/c157c8b48994e86f065254341aee4dddbe517516.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10859/5e0aea44c438dead88e6e32096ca4e5015978fca.png)