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:
Nasa said the rocket will be prepared over the next few days for what it calls a "wet dress rehearsal" - a test for fuel operations and countdown procedures.
，更多细节参见WPS下载最新地址
Image Credit: Sausly
var findNextGreater = function (nums) {