UVA13136 Recurrences

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=871&page=show_problem&problem=5047 [PDF](https://uva.onlinejudge.org/external/131/p13136.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13136/26d48a90072760be9b891bfef3f8f7245fb98834.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13136/68ec442aa5030587939746fa970888f4403b1317.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13136/1a604dbebca4b9b1ab8c7c47c987ca9a159418f1.png)