STEP 1: Notice that we gave you two helper functions and a main() within which is a 2D list we called maze.

A two-dimensional list is a list of lists. That means that at every index in our larger list we store another list.

• At maze[0], we've stored [0, 2, 2, 2, 0]. At each index inside maze, we've stored a list of five numbers.
• Let's practice modifying our 2D list! Change the first value in the first list in maze from 0 to 3.
• In maze, 0 is a wall, 1 is where our sprite will start, 2 is part of the maze's path, and 3 is the maze's end.

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