UVA12528 Environment Protection

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=441&page=show_problem&problem=3973 [PDF](https://uva.onlinejudge.org/external/125/p12528.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12528/a6b38d35ef72d2d65c603f96d009c835fcae2a88.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12528/e5d367e091510840c36ac26bf3e62c422bbabae3.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12528/7330ffa3702f8006cbbfbbca8d62fd90c489a390.png)