UVA11905 Map Coloring

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=229&page=show_problem&problem=3056 [PDF](https://uva.onlinejudge.org/external/119/p11905.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11905/5061ab6c8342d44066339a7b5d053efb81094b89.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11905/eba710705a63a7611c995b7edf57bf5e9365677d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11905/f03915b413881803c6dd982ee125dd10bfa3578a.png)