Constructing RGraph.

In this task, you are required for constructing an RGraph for a given recursive code. In order to help you carry the task, the first few nodes of the RGraph are done for you. After finishing constructing the RGraph, you will need to validate your solution.

The interface of this task will look like follows:

    RGraph Construction Interface

In order to insert  new connection between nodes, please follow these steps which are explained by the next figure..

Connecting Nodes Steps