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SAT (short for "satisfiability") is a logic problem that given a boolean formula, it asks whether the boolean formula has an assignment that makes the problem true. An example boolean formula is:
。同城约会对此有专业解读
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"Young people want the the opportunity to work," he said. "To get a decent career and move on in life and own their own home and all the things that young people down the generations have wanted to do."
Jupiter, Saturn, Venus, Mercury, Neptune and Uranus will all be visible at same time in curved line across sky