UVA13017 Canvas Painting

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=866&page=show_problem&problem=4905 [PDF](https://uva.onlinejudge.org/external/130/p13017.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13017/3e9a88e9f103de358fa4764fd7cac78802015311.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13017/80b8aa988bed1d7652d27b9dda53cbf2ab5ab6e7.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13017/bdb368527c2786a91c34cbbe808549b2e966872d.png)