No matter what you assign to the b, it will be false since either the left or the right of the && operator is false.
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，这一点在搜狗输入法2026中也有详细论述
Premature fundraising often leads to premature scaling — one of the leading causes of startup failure.
For SAT problems with 10 variables and 200 clauses, it usually output SAT as expected, but the assignment was never valid (Examples: first, second). Once it claimed a SAT formula was UNSAT. For this reason I didn't bother testing with more variables for the SAT case.