The modern, professional answer to this problem is the Trusted Execution Environment, or TEE.
I learned that for 4-SAT, if clause to variable ratio is more than 10, the generated problems become difficult to solve, and the likelihood of formula to be SAT or UNSAT is close to 50%. So I generated 3 types of formulas:
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* @param {number} target 目的地位置（英里）
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