UVA11173 Grey Codes

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=23&page=show_problem&problem=2114 [PDF](https://uva.onlinejudge.org/external/111/p11173.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11173/19f0e90af0b3405bb700a31906cd1de6fd7671c1.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11173/dd6943cc00f697318b5f98bd5fac63ade36984db.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11173/9c44ea495b5eefe19801eff579dddf950cbe9e94.png)