UVA506 系统依赖 System Dependencies

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=7&page=show_problem&problem=447 [PDF](https://uva.onlinejudge.org/external/5/p506.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA506/68afb2e6189fd70cb0193c35ff218476f81b2b02.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA506/00dcbed06d6ffd4ce2337600ff18c4293150ef46.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA506/5eeafd9adb13e67e1498450a046ece96f8f7f995.png)