The dashed circle shows the current best distance. As the algorithm finds closer points, the circle shrinks, which causes more subtrees to fail the "could contain a closer point?" test and get pruned. The search usually gets cheaper as it progresses.
There are several ways a subreddit can be manipulated. "Brigading" involves a coordinated attack by social media users on another group. In Reddit that would be a group of users looking to manipulate the conversation or voting pattern on a subreddit.
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England have not committed to fielding their strongest side in Friday’s do-not-necessarily-have-to-win T20 World Cup encounter with New Zealand but Jos Buttler will be given the chance to turn around his miserable run of form, with the team’s coaching staff convinced that a return to familiar lofty standards is imminent.
Author(s): Quentin Bizot, Ryo Tamura, Guillaume Deffrennes