UVA872 Ordering

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=10&page=show_problem&problem=813 [PDF](https://uva.onlinejudge.org/external/8/p872.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA872/22b7dcbd63893ffc19d2f15d4ef1f1461591872b.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA872/480af183e8cdaaf6a987b9a362215fa5db3ce070.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA872/c6cc5c4f2cc7a2237659263e02148493a3a6d866.png)