如何用LaTeX表达类似格式的图片？

Question

如何表示格式类似的图片？

Answer 1

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\textbf{The Top-$k$ Maximal Cliques Problem}\\
\textbf{Input:} an uncertain graph~$G$ and positive integers~$k$ and~$s$.\\
\textbf{Output:} a collection~$\mathcal{F}$ of $k$ vertex sets of $g$ such that

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