UVA877 Offset Polygons

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=10&page=show_problem&problem=818 [PDF](https://uva.onlinejudge.org/external/8/p877.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA877/f770344d14541cab08c0f4671f6c020a2f306bc6.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA877/51e1adbad8cf0db4f36d72af3db54f0f39044506.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA877/94340a65218872007be851509c610d1b8b9ba4d3.png)