1. You belong to a multilevel network marketing system where each person add n number beneath them those n number person also add n number beneath them. Every time you add a person beneath you, you earn 10 bucks, when someone whole comes under you and adds a person, you earn 3 bucks doesn't matter what level it is, if this chain can be on nth level and you have a structure with you, write down a program to know who much a person earned so far, doesn't matter on what level they are, system should traverse the nodes and should display bucksaccordingly.