very well written. however , below needs to be updated i guess.

(1*3) + (0*4) + (1*2) = 5 <= 4 #=> FALSE
(1*3) + (0*4) + (1*2) = 5 <= 4 #=> TRUE = 1

TO

(1*3) + (0*4) + (1*2) = 5 <= 4 #=> FALSE
(1*3) + (0*4) + (1*2) = 5 >= 4 #=> TRUE = 1