Number Sequence

题目描述

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=19&page=show_problem&problem=1647 [PDF](https://uva.onlinejudge.org/external/107/p10706.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10706/19b775c27d2b41e8ca2dc12b3354ce126e86b593.png)

输入输出格式

输入格式

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10706/4c8c62d3e852ec38ffdd96a86305b62c4cf7737d.png)

输出格式

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10706/5b01ab2879b88cf5dd6b56efbcf5379a90ff7a4c.png)

输入输出样例

输入样例 #1

2
8
3

输出样例 #1

2
2