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#
#    blueTicket
#
#    You have a blue lottery ticket, with ints a, b, and c on it. This makes three pairs,
#    which we'll call ab, bc, and ac. Consider the sum of the numbers in each pair.
#    If any pair sums to exactly 10, the result is 10. Otherwise if the ab sum is exactly 10 more
#    than either bc or ac sums, the result is 5. Otherwise the result is 0.
#
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#
#   blueTicket(9, 1, 0) → 10
#   blueTicket(9, 2, 0) → 0
#   blueTicket(6, 1, 4) → 10
#   blueTicket(6, 1, 5) → 0
#   blueTicket(10, 0, 0) → 10
#   blueTicket(15, 0, 5) → 5
#   blueTicket(5, 15, 5) → 10
#   blueTicket(4, 11, 1) → 5
#   blueTicket(13, 2, 3) → 5
#   blueTicket(8, 4, 3) → 0
#   blueTicket(8, 4, 2) → 10
#   blueTicket(8, 4, 1) → 0
#
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