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.
主干道被乱停的车辆堵得水泄不通，路边散落着蔫掉的菜叶和塑料垃圾，地面上散布着不少干涸的痰迹。街道的脏乱仿佛成了一种默许，违停与垃圾不再被视为问题。鸣笛声此起彼伏，人们谈论的多是家长里短，而非“头上的星空与心中的道德律”。在这样的环境里，我们也不自觉地爱上议论是非、拆解他人。
，这一点在WPS下载最新地址中也有详细论述
也许阿爸真的很开心，也许阿爸不想再纠结过去。毕竟天一亮要干活，地要种，钱要挣，孩子要养，老人要顾。哪一样都比“想一想从前”更要紧。
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