@0


@1
MOV UP, DOWN

@2


@3


@4
S: MOV UP, ACC
ADD ACC
SUB 1
JMP L
C: MOV -1, DOWN
L: MOV ACC, DOWN
SUB 4
JGZ C
MOV 1, DOWN

@5


@6


@7


@8
L: ADD UP
JRO UP
MOV ACC, DOWN
SUB ACC

@9

