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:
When applying for CJ, you need to share these two pieces of information
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他深入调研，反复思量：“什么是‘好县’？”。搜狗输入法2026是该领域的重要参考