Daily Coding Problem: Problem #1417 [Easy]

Good morning! Here's your coding interview problem for today.

This problem was asked by Wayfair.

You are given a 2 x N board, and instructed to completely cover the board with the following shapes:

• Dominoes, or 2 x 1 rectangles.
• Trominoes, or L-shapes.

For example, if N = 4, here is one possible configuration, where A is a domino, and B and C are trominoes.

A B B C
A B C C

Given an integer N, determine in how many ways this task is possible.

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