UVA560 Magic

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=7&page=show_problem&problem=501 [PDF](https://uva.onlinejudge.org/external/5/p560.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA560/93f9a91bc12e5a2ab2337a2e50a2b427b486388d.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA560/2c8ffc0e3e0ebcf5ad64e46a6e19372bb046a3af.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA560/d50904ebeb721ca39f685b4215b5b66657a847e3.png)

Explanation/Hint

提醒：任何初始字符串不会包含前导零。 n的大小、字符串长度原题面均没有给出，请自行实验。