function [revenue] = parkingRevenue(timeUsed, price)
    %parkingRevenue computes the revenue from parking fees 
    %     timeUsed: a matrix with the number of hours each spot was used
    %     price: a matrix with the price per hour for each spot
    %     ONLY THE EDGE VALUES FROM EACH MATRIX SHOULD BE USED
    %     
    %     revenue: the total amount earned from all parking spots
    
    % Write your code here!

end