UVA11994 快乐涂色 Happy Painting!

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=229&page=show_problem&problem=3145 [PDF](https://uva.onlinejudge.org/external/119/p11994.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11994/31dfe9db51b1566edc88ff8c86f4b753f060ca1a.png)

Input Format

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Output Format

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