Start DP190Medium

I got pretty far, I think. The only problem is that it is taking a ton
of time to finish. I don't know why. Maybe I should use a faster search.
Now that I think of it, that's probably the issue. When I get back,
I'll write a binary search or something else nice.

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Merge remote-tracking branch 'origin/master'

Conflicts:
	DP190Medium/src/dp190medium/DP190Medium.java