UVA11712 Gnirut

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=117&page=show_problem&problem=2759 [PDF](https://uva.onlinejudge.org/external/117/p11712.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11712/8ce0d59107163a77f317af2e9346d80a6b330fcd.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11712/10a6de57b1e6a5057acce0e48a95386609e6cf07.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11712/f0da2aff32bc017a44aecc94484db532816c6ef6.png)