As we've shared in previous hints stories, this is a version of the popular New York Times word game that seeks to test the knowledge of sports fans.
Notice how the highlighted region shrinks at each step. The algorithm never examines points outside the narrowing window. In a balanced tree with nnn points, this takes about log4(n)\log_4(n)log4(n) steps. For a million points, that's roughly 10 steps instead of a million comparisons.
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Figuring out how to strip it out was a bit of a challenge - I ended up forking go’s crypto library - but it was a huge win. Performance approximately doubled!
a host computer that is some distance away or, even worse, in The Cloud.