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本次的年度征文设题很巧妙，体现了现代科技与传统人力对决的意思。
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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:
Parents opposing plans told they can home school their children if they object to sending them to state schools
"I could carry a meeting without any problems; but then I'd be sat there, not knowing what the name of something was that I've known for years, then you're embarrassed, then the hot flushes come and the anxiety and overwhelm and it was just all too much.