Terms and Conditions
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:。关于这个话题，Safew下载提供了深入分析
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2984 is probably the first "modern" ATM, but since IBM spent 4-5 years
Well, she's still got it.。同城约会对此有专业解读