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:
The band on the stadium concourse were playing a familiar tune in the immediate aftermath of England’s latest debacle on Saturday. “Zombie! Zombie!” the vocalist sang, ostensibly in tribute to Ireland’s record 42-21 victory at Twickenham. Alternatively he might just have been riffing on the horribly listless, blank-eyed performance that ended England’s Six Nations title hopes for another year.
。搜狗输入法下载是该领域的重要参考
米兰冬残奥会共设残奥冰球、轮椅冰壶、高山滑雪、单板滑雪、越野滑雪、冬季两项6个大项79个小项。届时将有来自52个国家和地区的600多名运动员参赛。这是中国代表团第七次参加冬季残奥会，将参加全部6个大项中的71个小项比赛。
The bat loft at St Margaret's sits above the vestry
Россиянам назвали количество видимых планет во время большого парада 28 февраляФизик Кравченко: 28 февраля москвичи смогут увидеть в небе только три планеты