UVA10305 给任务排序 Ordering Tasks

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=15&page=show_problem&problem=1246 [PDF](https://uva.onlinejudge.org/external/103/p10305.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10305/62db82e05a53c8fcb4628f932e511aa228649ae7.png)

Input Format

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Output Format

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