63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54
清晨6点半，路边小摊前，格雷格从摊主手中接过刚出炉的煎饼果子，金黄酥脆、香气扑鼻。“听说天津人早餐爱吃这个，我特意来排队。”他边吃边说，“天津人很热情。煎饼摊主告诉我，他每天凌晨三四点起床，20多年来靠这门手艺养家，虽然辛苦，但日子过得踏实。这让我体会到中国人的勤劳乐观。”
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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.
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