Раскрыты подробности похищения ребенка в Смоленске09:27
На Западе подчинили рой насекомых для разведки в интересах НАТО08:43
。搜狗输入法2026是该领域的重要参考
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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The last element is ours.