Tak z _FIXED_ by ksk

#!ruby -na
def f x,y,z
x>y ?$*[y*z*3-x]||=f(f(x-5,y,z),f(y-5,z,x),f(z-5,x,y)):z
end
eval"p f "+$F*','

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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return top