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For SAT problems with 10 variables and 200 clauses, sometimes outputted UNSAT because it couldn't find any satisfying assignment, and it would take a lot more time to find one, which is logically sound. I don't consider this as bad reasoning as it is about performance. So I tried it with only 100 clauses and it successfully found valid assignments.
63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54。关于这个话题，safew官方下载提供了深入分析