conn = sqlite3.connect(DB)
Regarding yesterday’s last line ‘Hot Parents’ Chat Ahoy’ (full email edition), am I the only one wondering if it is the chat or the parents that are hot? Pray tell” – Martyn Shapter [neither – Football Daily Ed].
，这一点在51吃瓜中也有详细论述
// 易错点1：边界处理 - 空链表直接返回空数组
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: