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:
本次的年度征文设题很巧妙，体现了现代科技与传统人力对决的意思。
。关于这个话题，搜狗输入法2026提供了深入分析
Глеб Макаревичсотрудник Центра Индоокеанского региона ИМЭМО РАН，这一点在爱思助手下载最新版本中也有详细论述
Александра Синицына (Ночной линейный редактор)
"""解析详情页，提取结构化数据"""