yeah, this contest has told me that i really need to study up on algorithms.
it's also scary that the fast person completed all three in less than half
an hour. i got large and small for A and B correct but for C somehow I had a
recursive thing and it took forever and I couldn't figure out how to make it
faster so I ran out of time. for B my algorithm was pretty crappy, i just
looped through all the grid points, in order from left to right and top
down, found the basin that they flowed into, if it did not already have a
letter to go with it, i labeled that basin with the next letter in the
alphabet and also the grid point with the letter of the basin. it still
completed instantly, but i was not so lucky with C.

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