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Фото: Павел Родимов / Фотобанк Лори
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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:，详情可参考heLLoword翻译官方下载
at a teller during business hours, who essentially dispensed the token as if it