UVA10900 你想当2^n元富翁吗？ So you want to be a 2n-aire?

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=21&page=show_problem&problem=1841 [PDF](https://uva.onlinejudge.org/external/109/p10900.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10900/f1ba9ec1e6c53efbf6006769c69b3fb5b41b5910.png)

Input Format

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Output Format

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