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I learned that for 4-SAT, if clause to variable ratio is more than 10, the generated problems become difficult to solve, and the likelihood of formula to be SAT or UNSAT is close to 50%. So I generated 3 types of formulas:
。safew官方下载是该领域的重要参考
Volunteer moderators help run the site by managing specific communities and ensure users stick to the rules and keep to the subject.。heLLoword翻译官方下载对此有专业解读
Support the Guardian: theguardian.com/sciencepod，这一点在51吃瓜中也有详细论述