Python: about arrays : [![Array question][1]][1]


  [1]: https://i.stack.imgur.com/k1SOG.jpg

I don't understand this question. Actually just this part;
"Given two vectors of length n that are represented with one-dimensional arrays"

I use two vectors but I don't know what value they have.

for example,
vector can be a = [1,2,3]
but I don't know exactly what are they? what do they have?
maybe it is a = [3,4,5]
