Given a Binary Tree of size N, your task is to complete the function countNonLeafNodes(), that should return the count of all the non-leaf nodes of the given binary tree.
Example:

Input : 

Output :
2

Input:
The function takes a single arguments as input, the reference pointer to the root of the binary tree.
There are T test cases and for each test case the function will be called separately.

Output:
The function should return the count of all the non-leaf nodes of the binary tree.

Constraints:
1<=T<=10³
0<=N<=10³