UVA11915 Recurrence

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=229&page=show_problem&problem=3066 [PDF](https://uva.onlinejudge.org/external/119/p11915.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11915/503193a1cd3a6d2edb9a5b6e11293d75ae25f525.png)

Input Format

N/A

Output Format

N/A