Given a binary tree, where every node value is a number . Find the sum of all the numbers which are formed from root to leaf paths.

For example consider the following Binary Tree.

```
6
/ \
3 5
/ \ \
2 5 4
/ \
7 4
There are 4 leaves, hence 4 root to leaf paths:
Path Number
6->3->2 632
6->3->5->7 6357
6->3->5->4 6354
6->5>4 654
Answer = 632 + 6357 + 6354 + 654 = 13997
```

**Input:**

The task is to complete the method which takes one argument, root of Binary Tree. The Node has a data part which stores the data, pointer to left child and pointer to right child. There are multiple test cases. For each test case, this method will be called individually.

**Output:**

The function should return sum of all the numbers which are formed from root to leaf paths.

**Constraints:**

1 <=T<= 30

1 <=Number of nodes<= 100

1 <=Data of a node<= 1000

**Example:
Input:**

2

2

1 2 L 1 3 R

4

10 20 L 10 30 R 20 40 L 20 60 R

**Output:**

25

2630

There are two test cases. First case represents a tree with 3 nodes and 2 edges where root is 1, left child of 1 is 2 and right child of 1 is 3. Second test case represents a tree with 4 edges and 5 nodes.

Author: Shubham Joshi 1

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