UVA10044 Erdos Numbers

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=12&page=show_problem&problem=985 [PDF](https://uva.onlinejudge.org/external/100/p10044.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10044/e62e379f85e765871bae575b92fac4c52cdea507.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10044/160ea6ac7f93387c870f5e0740cb3e79165fee6c.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10044/7c7a1342ff23053de092e794ef8448d799160ace.png)