UVA450 Little Black Book

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=6&page=show_problem&problem=391 [PDF](https://uva.onlinejudge.org/external/4/p450.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA450/1370b5328089d051bb4533714d7e85717652cca6.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA450/eb20cc6581da2cadfc9f2638b067f5dc79ca0759.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA450/557cf7d2e8191d60ad6afc9f328c01887cde6f27.png)