Program ignores this line. Second line: #rows, #columns, optional delay, optional map cell size. Other lines: C-road crossing, B-block of houses, R-road going right, L-road going left, U-road going up, D-road going down, S-starting location, E-destination
5 5  1000
B B S B B
C C C R C
B U B C C
B C B D D 
B C B C E