There is a special form for boolean formulas called "Conjunctive Normal Form" (CNF). A problem in this form consists of clauses connected with and operators, where each clause only contains variables connected with or operators. The variables can appear negated, but only variables can be directly negated, something like !(a && b) is not allowed. An example boolean formula in CNF form is:
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（图源：长春高新 2021 年年度报告）
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Generate UNLIMITED* characters per month。关于这个话题，91视频提供了深入分析
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