Suppose you have all the numbers, but the only thing you know how to do with them is
m(x, y, z) = min(x+y, x+z, y+z)
Given any x and y, can you produce x+y using only m?
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In reply to @christianp
oh, #IHaveAnAnswer
What's the next term in this sequence?
1, 2, 1, 3, 1, 4, 2, 5, 1, 6, 2, 3, 7, 8, 4, 3, 1, 9, 2, 10, 5
What's the pattern?
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