If the left and right image contains the same number of buses facing frontward and backward.
return buses ;return #1 that are facing frontward ;return #1 that are facing backward ;return left image ;return right image ;return #2 that are in  #4 ;return #2 that are in  #5 ;return #3 that are in  #4 ;return #3 that are in  #5 ;return number of  #6 ;return number of  #7 ;return number of  #8 ;return number of  #9 ;return if  #10 is equal to  #11 ;return if  #12 is equal to  #13 ;return if  both  #14 and #15 are true
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