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.
int minIdx = i; // 假设当前位置是最小值
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if you wanted, actually order a 3624 with two printers: one that presented the
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