Preprocess #1
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Preprocess #1
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There is one Iterator class, which has a pointer to a (polymorphic) base structure which can do different types of preprocessing.
Don't optimise if preprocessing takes > MAXTIME, which is now #defined for easier modification. Also introduces 2 new SkipBig iterators, with steps of sizes 15 and 50.
FindBestIterator loses the guarantee that the last-added position will be the one this agent considers "worst", so we now keep track of what the worst rank is.
Finds the best position to add in the current group/rank of the current agent.
This new mode (7), first runs skip5 until it cannot find anything, before moving onto the exact algorithm.
reductionExact now takes a supp parameter, defaulting to false. If set to true, then we also look at positions which are always filled when looking to find sets C, P, and P'.
Early exits
Use correct bound for the improved descending Fixes the no-preprocessing to show 0 pairs removed
Edges going from right to left should subtract flow, not add to it
If a new agent is now always matched, we might find more preprocessing
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