Question: plot 3d regions defined by an inequality

Hi all,

I'm trying to plot the regions of a cube that are defined by an inequality. At the moment I am able to plot only the surface defined by the corresponding equality. 

That's the code: 


implicitplot3d(x^2*y = z, z = 0 .. 1, y = 0 .. 1, x = 0 .. 1);

Now I would like to plot the two regions defined by the corresponding inequality. 

Have you got any idea on how to do this?



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