The grid lines on the visualization represent a tree structure underneath. Every region is a node. When a node splits, it creates four children. The root node covers the entire space. Leaf nodes (nodes with no children) hold the actual points.
important to use the tool as an aid, not a replacement for the developer's
，更多细节参见爱思助手下载最新版本
This one was a lot better than others. For every SAT problem with 10 variables and 200 clauses it was able to find a valid satisfying assignment. Therefore, I pushed it to test with 14 variables and 100 clauses, and it got half correct among 4 instances (See files with prefix formula14_ in here). Half correct sounds like a decent performance, but it is equivalent to random guessing.。关于这个话题，同城约会提供了深入分析
Cuba's deputy foreign minister Carlos Fernández de Cossío said the US had shown a "willingness" to cooperate on "clarifying these regrettable events".
self.parser = Parser(self.config.base_url)