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Interesting, is there a website which offers a set of real dev problems to solve? Like, here is the IP of a prod environment, we are getting 500 with some combination of POST request parameters to this endpoint, the logs say there is something wrong with deserialization, integration tests are green, customers are screaming. This kind of things, not "find a sum of polynomials"?

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A sequence of checks to arrive at the root cause of the problem can be represented as a path in (preferably balanced) binary search tree. Binary search tree is not a goal by itself, but a tool to build a mental model for a practical problem solution.

So at least to me "this kind of things" would be a superset of "find a sum of polynomials" and checking knowledge of a subset is a little bit easier.

> A sequence of checks to arrive at the root cause of the problem can be represented as a path in (preferably balanced) binary search tree.

Yes, probably everything in this world can be represented as a balanced binary search tree, who knows.

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