UVA10889 The Lost Gift

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=20&page=show_problem&problem=1830 [PDF](https://uva.onlinejudge.org/external/108/p10889.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10889/84a0ae5f82176fdb935828415a451972020f1373.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10889/774d16fc5cb145488570af6100f6b8306d4ee1fb.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10889/199ae649ba8d20fa396bb90e8b0a3cd81d51fe6b.png)