A Bug's Life ACM简单并查集优快云博客

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于 2019-04-09 10:51:09 发布 · 335 阅读

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#ACM 并查集 A Bug's Life

该博客介绍了ACM中一个关于并查集的应用问题——A Bug's Life。问题旨在判断实验中昆虫的交互是否符合仅有异性互动的假设。输入包含昆虫数量和交互次数，输出是根据分析得出的结论。博客提供了示例输入和输出，并提到了处理大型输入的建议。博主分享了通过维护关系数组解决此问题的代码。

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问题描述
A Bug’s Life
Background
Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two different genders and that they only interact with bugs of the opposite gender. In his experiment, individual bugs and their interactions were easy to identify, because numbers were printed on their backs.
Problem
Given a list of bug interactions, decide whether the experiment supports his assumption of two genders with no homosexual bugs or if it contains some bug interactions that falsify it.
Input
The first line of the input contains the number of scenarios. Each scenario starts with one line giving the number of bugs (at least one, and up to 2000) and the number of interactions (up to 1000000) separated by a single space. In the following lines, each interaction is given in the form of two distinct bug numbers separated by a single space. Bugs are numbered consecutively starting from one.
Out