UVA10985 Rings'n'Ropes

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=21&page=show_problem&problem=1926 [PDF](https://uva.onlinejudge.org/external/109/p10985.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10985/54bd98a8142d6d7d73ed9f0cce4cd517b1bce619.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10985/5de0058d7f95f98a01023794812ca2e2b650de55.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10985/77d803d99f2d5eef34837bf0516ec53145f5c58e.png)