No Strings Attached

It is a well-known fact that Abhik and Sahitya gossip a lot! In fact, they gossip so much that they hardly remember about whom they gossip. Knowing this Godi proposes a game so that indirectly he can extract out as much information as possible from them. The game he proposes is as follows: He asks Abhik and Sahitya to each give an integer ni and a string si of length ni. si is the person each wis