@1
MOV UP RIGHT

@2
L: MOV UP ACC
JEZ SUM
T: JGZ B
MOV RIGHT NIL
MOV LEFT DOWN
MOV UP ACC
JNZ T
SUM: MOV LEFT ACC
ADD RIGHT
MOV ACC DOWN
JMP L
B: MOV LEFT NIL
MOV RIGHT DOWN

@3
MOV UP LEFT

@6
MOV UP DOWN

@9
MOV UP DOWN
