This formula is satisfiable because if we set to b to true and a to false, then the whole formula is true. All other assignments make the formula false, but it doesn't change that the formula is satisfiable as long as there is at least one assignment makes the formula true.
// 2. 排序：逐个将堆顶元素放到末尾
，更多细节参见Line官方版本下载
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但当你熬夜写代码，只为看到项目运行时的火焰，是什么让你兴奋？，这一点在WPS官方版本下载中也有详细论述
第三十一条 有下列行为之一的，处十日以上十五日以下拘留，可以并处二千元以下罚款；情节较轻的，处五日以上十日以下拘留，可以并处一千元以下罚款：。夫子对此有专业解读
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