I was once given a boolean function, asked to implement it using logic gates. And then asked to optimize it based on a few criteria (for example: GNDs and VDDs

I was once given a boolean function, asked to implement it using logic gates. And then asked to optimize it based on a few criteria (for example: GNDs and VDDs cost a lot, reduce the gates, etc.) The most annoying thing was, I was not expecting any gates related question so my optimizations were very... adhoc.