@0
ADD UP
ADD UP
SUB UP
MOV ACC RIGHT
JRO -1

@1
MOV LEFT RIGHT

@2
MOV UP   ACC
MOV ACC  ANY
MOV ACC  LAST
SWP
SUB LEFT
MOV ACC  LAST

@3


@4


@5


@6
MOV UP DOWN

@7


@8


@9


@10
   SUB ANY
   JNZ N
   MOV 1    DOWN
   JMP S
N: MOV 0    DOWN
S: MOV LAST ACC
   ADD LAST