UVA11759 IBM Fencing

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=117&page=show_problem&problem=2859 [PDF](https://uva.onlinejudge.org/external/117/p11759.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11759/2a5066caf11fdc502ee47e660dee46f59268a2c3.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11759/ae542019580ec1af6ae1ac8bc8586f61a960eab4.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11759/eeecd11034737c45fb4055659b5f5fa629d01b25.png)