"Adjacent" to a given seat means one of the eight positions immediately up, down, left, right, or diagonal from the seat.

CountSeats takes in a seat pattern and returns OccupiedSeat count, EmptySeat count.

Fill takes a seat pattern and in parallel fills the seats given the rules above returning a filled seat pattern.

GetSeatState checks adjacency of a seat given the i, j of the seat according to the rules above.

IsEqual compares 2 2D arrays to check for equality.