UVA12623 Choosing Presents

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=602&page=show_problem&problem=4346 [PDF](https://uva.onlinejudge.org/external/126/p12623.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12623/ea92b7a62da503bac9f21e98ef9d9e67566a0ce5.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12623/382740f2e0c0818b05dcbdd12b14e34a9941e21d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12623/eaf80f4d66f33daac329dc553a2084393f3e62b5.png)