UVA437 巴比伦塔 The Tower of Babylon

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=6&page=show_problem&problem=378 [PDF](https://uva.onlinejudge.org/external/4/p437.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA437/9cfd091ffcf425df6dc3f975c119a7baf8b0d379.png)

Input Format

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Output Format

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