In these tough times of the COVID-19 pandemic, one of the safest ways of mixing with friends is to meet up in a local park. But what 2D configuration, lattice or otherwise, offers the best way to maintain the appropriate social distance?

中文翻译：

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莱迪思在公园里闲逛

在COVID-19大流行的艰难时期，与朋友交往最安全的方法之一是在当地公园聚会。但是，哪种2D配置（网格或其他方式）可以提供最佳的方式来维持适当的社交距离？