UVA165 Stamps

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=3&page=show_problem&problem=101 [PDF](https://uva.onlinejudge.org/external/1/p165.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA165/3bc5f98a835bb39bbb911a20bd23f3b33042a4e9.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA165/80acc56e9a7b9c10ebaec666b7813ce2e396e2ce.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA165/ef5a1045937ed28a1d06ec7fa7543005dcc4a7dd.png)