Max Nutrition

You are trying to be more healthy, and thus have decided to eat only fruits. You have lots of fruits of different types, but you get bored of a specific fruit type very quickly — so you will never repeat fruit types that you eat, i.e. you will eat **at most one** fruit of each type. You have $N$ fruits, the $i$-th fruit being of type $A_i$ and providing you a nutrition value of $B_i$. Some frui