@1
L: MOV UP, ACC
MOV ACC, DOWN
JEZ Z
MOV -2, DOWN
JMP L
Z: MOV 1, DOWN

@4
MOV UP, DOWN
MOV UP, ACC
MOV ACC, DOWN
MOV ACC, DOWN

@8
ADD UP
MOV UP, RIGHT
JRO UP
MOV ACC, DOWN
MOV 0, ACC

@9
ADD 1
JRO LEFT
SUB 1
MOV ACC, DOWN
MOV 0, ACC
