Generate random SAT instances, both SAT and UNSAT.
由此也在当年给消费者们留下了这样的印象，预算有限买不了原厂，又不想买的太差，又懒得挑，选绿联就准没错。
。safew官方版本下载是该领域的重要参考
In the 2012 film adaptation of the Dr Seuss book The Lorax, a fable about capitalist greed, air is a commodity.
https://feedx.net
let closed = false;