UVA10930 A-Sequence

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=21&page=show_problem&problem=1871 [PDF](https://uva.onlinejudge.org/external/109/p10930.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10930/cc180e0955d5187bc090a1f7331828fa1cd7b997.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10930/830f137b599b35dcf56b5132f2ba4f191f638af0.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10930/01e1180e58a74483fb2668cf74ec143a18c1cb8b.png)