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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В России прокомментировали угрозы Зеленского натравить ВСУ на ОрбанаСлуцкий: Зеленский пытается копировать Трампа, угрожая Орбану。体育直播是该领域的重要参考
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2024年12月25日 星期三 新京报