@1
MOV UP, DOWN

@4
LOAD: MOV UP, ACC
SAV
MOV UP, DOWN
MOV UP, ACC
MOV UP, DOWN
ROW: ADD DOWN
JLZ LOAD
SWP
MOV ACC, DOWN
SWP
MOV ACC, DOWN
JMP ROW

@8
MOV UP, ACC
SWP
MOV UP, ACC
SWP
ROW: SWP
JEZ END
SUB 1
SWP
MOV 0, UP
MOV UP, RIGHT
MOV ACC, RIGHT
MOV UP, RIGHT
ADD 1
JMP ROW
END: MOV -999, UP

@9
MOV LEFT, DOWN
MOV LEFT, DOWN
MOV LEFT, ACC
P: MOV 3, DOWN
SUB 1
JGZ P
MOV -1, DOWN
