year16-small.hrm

-- HUMAN RESOURCE MACHINE PROGRAM --

-- 16: Absolute Positivity

-- INSTRUCTIONS: "Send each thing from the INBOX to the OUTBOX. BUT, if
-- a number is negative, first remove its negative sign."

-- AVAILABLE COMMANDS: INBOX, OUTBOX, COPYFROM, COPYTO, ADD, SUB, JUMP,
-- JUMPZ, JUMPN, COMMENT

-- SIZE: 8 commands (challenge 8)
-- AVERAGE RUNTIME: 34 steps (challenge 36)


    JUMP     c
a:
-- Negate a negative value by subtracting it from itself twice.
    COPYTO   0
    SUB      0
    SUB      0
b:
    OUTBOX
c:
    INBOX
    JUMPN    a
    JUMP     b


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