@0
## SELECTOR

@1
SEL: MOV RIGHT ACC
 JGZ NO
 MOV UP  DOWN
 JMP SEL
NO:  MOV 0     DOWN
 MOV UP  NIL

@2
 MOV UP ACC
 MOV ACC LEFT
 MOV ACC RIGHT

@3
SEL: MOV LEFT ACC
 JLZ NO
 MOV UP  DOWN
 JMP SEL
NO:  MOV 0     DOWN
 MOV UP  NIL

@4


@5
MOV UP RIGHT

@6
MOV LEFT  ACC
ADD RIGHT
MOV ACC   DOWN

@7
MOV UP LEFT

@8


@9
MOV UP DOWN

@10