/r/ Problem name

Hi, this is odd, i'm solving a problem but i don't know its name.

The problem is the following:

There are 2 (ordered) numbers array V and W.
We have to find a number k which is the result of V[i]+W[j].

Do you know something about it?

what the hell you have i and j and you need to find k? that is what the OP post says.