UVA11625 Nice Prefixes

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=78&page=show_problem&problem=2672 [PDF](https://uva.onlinejudge.org/external/116/p11625.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11625/1448e8989ab055070e01afc11162f6875e62370f.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11625/c4c75de3fee69ea30c729d2a98c8a74c0e5f188f.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11625/fd405e4b8007578f7d52f4f199b3043a75f539b4.png)