方向遍历顺序说明下一个倒序（从右往左）先处理右侧，栈里存「右侧候选」上一个正序（从左往右）先处理左侧，栈里存「左侧候选」
入门级 MacBook：多方消息显示，苹果正在测试搭载 A 系列芯片的低价 MacBook 方案，目标价位或下探至 600 美元区间；，详情可参考搜狗输入法2026
"These types of surgeries are too risky, yet it's still so accessible," she said.，这一点在safew官方版本下载中也有详细论述
I used z3 theorem prover to assess LLM output, which is a pretty decent SAT solver. I considered the LLM output successful if it determines the formula is SAT or UNSAT correctly, and for SAT case it needs to provide a valid assignment. Testing the assignment is easy, given an assignment you can add a single variable clause to the formula. If the resulting formula is still SAT, that means the assignment is valid otherwise it means that the assignment contradicts with the formula, and it is invalid.