UVA13173 Secret Santa

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=871&page=show_problem&problem=5084 [PDF](https://uva.onlinejudge.org/external/131/p13173.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13173/13a48e2633c32276b8cbb9ec578bda9adb050321.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13173/b07f7ed55fb0220f7488d586957dfc356bf4e2b0.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13173/54d120c1f6ef82e5407592af3409687418b04db3.png)