UVA455 周期串 Periodic Strings

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=6&page=show_problem&problem=396 [PDF](https://uva.onlinejudge.org/external/4/p455.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA455/0f2c951ddd4b8470f98c3b52cdc3c03c6f911571.png)

Input Format

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Output Format

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