UVA12092 Paint the Roads

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=242&page=show_problem&problem=3244 [PDF](https://uva.onlinejudge.org/external/120/p12092.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12092/a506f15ae5cedb4be581f733fe2c088104d8f6ea.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12092/1cad669274ea1ed1ca8d9931f773585c3ff20e3d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12092/b1c5580d84db806b4f3251f1862b3de007ce5ae5.png)