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:
Walmart becomes first retailer to hit $1tn market value
。业内人士推荐爱思助手下载最新版本作为进阶阅读
Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04
Wordiness: This tool will help you check your writing for long and hard-to-read sentences. It also shows you how to shorten sentences so that they are more concise.