Number of ways
Medium Accuracy: 12.67% Submissions: 355 Points: 4

Given a value N. In how many ways you can construct a grid of size N x 4 using tiles of size 1 x 4.

Example 1:

Input: N = 1
Output: 1
Explaination: There is only one way.

Example 2:

Input: N = 4
Output: 2
Explaination: The first way can be when all 
the 1 x 4 tiles are arranged horizontally. 
Second way can be when all the 1 x 4 tiles 
are arranged vertically.

Your Task:
You do not need to read input or print anything. Your task is to complete the function arrangeTiles() which takes the value N as input parameter and returns the number of ways to make N x 4 grid using 1 x 4 tiles.

Expected Time Complexity: O(N)
Expected Auxiliary Space: O(N)

1 ≤ N ≤ 80

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