UVA11230 Annoying painting tool

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=2171 [PDF](https://uva.onlinejudge.org/external/112/p11230.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11230/0d476a1306e17151e98c18c8bf016a746073c76d.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11230/bc97e884878712d3818d02bb65cc63ec1519d7ad.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11230/81bbc33961b6f11d68a07b2ef8a0a54442e71a2c.png)