UVA11192 Group Reverse

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=23&page=show_problem&problem=2133 [PDF](https://uva.onlinejudge.org/external/111/p11192.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11192/4f5257369f8741093e888abaf612ae1fde8fd876.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11192/01d61926cef00dc72367709d53197dcb9a3e113a.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11192/c41e4dff49ce4a8629feebe46625aa7892383c02.png)