UVA12120 Photographic Tour

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=243&page=show_problem&problem=3272 [PDF](https://uva.onlinejudge.org/external/121/p12120.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12120/25bc415569ba2a98c2cc9ecdeebe178da462670e.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12120/8f0aa296be443efc984e4c743073dc47e6f1f9e8.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12120/b4a27e2096d761efce878b9f88d93585d2cbb36c.png)