UVA572 油田 Oil Deposits

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=7&page=show_problem&problem=513 [PDF](https://uva.onlinejudge.org/external/5/p572.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA572/ce90a5dd1ff852d09612a3d726a859f2f238d409.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA572/e054765bf4e9769be3a53a455e412d62189dbbff.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA572/99ea5e1b8c71aa83bbd6eed7a0e27de87f60a175.png)