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:
profitable to target or not.
，这一点在搜狗输入法下载中也有详细论述
free_table[j] = h;
这一幕，正是秘鲁过去十年政治现实的缩影：在总统频繁更替、权力博弈不断的背景下，政策与人事反复摇摆，制度预期愈发不稳。
不独此，某巨富去世，其女儿给他立碑，碑文写得幼稚，不伦不类不说，于凶礼中急切窜入吉礼，实在荒唐。