Lukujono

# Collatz with fewer commands

# Loop enable
INCREASE L

# Q = 180 (min steps headroom; linear build is optimal)
INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q
INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q
INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q
INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q
INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q
INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q
INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q
INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q
INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q INCREASE Q

# Print initial value
PRINT X

# Main loop with early-break via L
REPEAT Q TIMES (
    REPEAT L TIMES (
        # Prepare flags and work vars
        CLEAR O CLEAR T CLEAR V CLEAR S CLEAR M CLEAR R
        INCREASE T     # T = 1 (needed by parity scan)
        INCREASE O     # O = 1 (odd branch enabled; will be cleared if even)

        # Scan X once:
        # - T ends 1 if X even, 0 if odd
        # - V = floor(X/2)
        # - M becomes >0 iff V >= 2 (i.e., original X >= 4)
        REPEAT X TIMES (
            INCREASE B
            REPEAT T TIMES (
                CLEAR B
                CLEAR T
            )
            REPEAT B TIMES (
                INCREASE V
                INCREASE T
                REPEAT S TIMES (
                    INCREASE M
                    CLEAR S
                )
                INCREASE S
            )
        )

        # Even case: X = V; if result is 1 (i.e., original X was 2), clear L to stop
        REPEAT T TIMES (
            INCREASE R          # R = 1
            REPEAT M TIMES (     # If V >= 2 then M > 0 -> clear R
                CLEAR R
            )
            REPEAT R TIMES (     # R == 1 iff V <= 1; with X > 0 and even -> V == 1
                CLEAR L
            )

            CLEAR X
            REPEAT V TIMES (
                INCREASE X
            )
            CLEAR O              # Suppress odd branch
        )

        # Odd case: X = 3X + 1 (minimal increments)
        REPEAT O TIMES (
            REPEAT X TIMES (
                INCREASE X INCREASE X
            )
            INCREASE X
        )

        PRINT X
    )
)

Test 1 (public)

Verdict: ACCEPTED