Are all three integers distinct? You will be given 3 integers as input. The inputs may or may not be
 different from each other. 
You have to output 1 if all three inputs
 are different from each other, 
and 0 if any input is repeated more
 than once.

This is code-golf, so make your code as short as possible!
Python 3, 23 21 20 bytes



lambda*a:len({*a})&gt;2


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