// 作用：通过最值判断是否需要扩展左/右边界（左侧最小值/右侧<最大值的元素都需纳入无序区间）
SAT (short for "satisfiability") is a logic problem that given a boolean formula, it asks whether the boolean formula has an assignment that makes the problem true. An example boolean formula is:
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人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用
The team are now trying to work out if this could be an example of very early Christianity.
Израиль нанес удар по Ирану09:28