@1
MOV ACC RIGHT
MOV UP RIGHT
MOV ACC RIGHT
ADD 8

@2
L: MOV UP ACC
SUB LEFT
JGZ N
MOV LEFT NIL
MOV LEFT NIL
JMP O
N: MOV LEFT ACC
SUB LEFT
JGZ O
MOV -999 DOWN
JMP L
O: MOV ACC DOWN

@5
MOV UP DOWN

@7
SAV
ADD UP
JGZ O
MOV 0 ACC
O: MOV ACC DOWN
SWP
ADD 8
