genius

amazing superstar code...hats off

No offense, but if I saw this in a PR, I'd immediately reject lol

No,actually. after the first if statement becomes True (here 73>70), so the third if statement would be executed, and the return statement in if statement would throw the control out of the function. Hope that makes sense.

best use of mathematics and logic! well done >>>

Awesome! Very simple solution!

Thank you Polarish, that's important!

If two producers are selling the same product (i.e. the same id), wouldn't that skew the results? I'm having a hard time understanding the difference, but there definitely is one when you compare the output tables.

How could it return A if 73 is not >=90 ?

let's assume mean is 73 so it could be return A or B or C, right? or i'm missing something!

ddd

shouldnt this be wrong if you are not making conditions mutually exclusive a 95 grade should return all abcdef

I think a lot of people treat best practice and clever as if they are the same thing. I think a lot of us don't have experience coding in a production environment so our concept of what "best practices" entails is nebulous at best.