UVA12102 Lineland's Airport

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=243&page=show_problem&problem=3254 [PDF](https://uva.onlinejudge.org/external/121/p12102.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12102/85294a1735e70dc027129ec69da88bb2b738751f.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12102/a7371d148a5abf9eae5fd36a80f608a3e0d7136c.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12102/67008e58a44d8dea5aa2297ee536b582ba4a9bab.png)