@0
MOV UP, RIGHT

@1
MOV UP, ACC
ADD ACC
ADD LEFT
MOV ACC, RIGHT

@2
MOV UP, ACC
JEZ Z
ADD 2
Z: ADD LEFT
ADD RIGHT
MOV ACC, DOWN

@3
MOV UP, ACC
ADD ACC
ADD ACC
MOV ACC, LEFT

@6
MOV UP, ACC
MOV ACC, DOWN
SWP
MOV ACC, DOWN

@9
MOV UP, ACC
SUB UP
JGZ POS
MOV 0, ACC
POS: MOV ACC, DOWN
