Codeseum
    ← Arena
    DEBUG · DEBUG-002·MASTER·par 120s·3,988 plays

    React batching ghost

    Merge K sorted streams into one. The cursor matters more than the math.

    MASTERSprint · par 120sElo upside · +22 to +44 (top +60+)

    Contract

    solve(input: any) → any

    Return the indices, not the values. Order matters.

    Visible tests

    • in: [2, 7, 11, 15], target: 9
      → [0, 1]
    • in: [3, 2, 4], target: 6
      → [1, 2]
    • in: [3, 3], target: 6
      → [0, 1]

    + 7 hidden tests fire on submit

    Step in

    The clock starts the moment you click. Bring your AI engine — your own API key — and the tape rolls.

    Start the clock →
    Correctness · 50%Speed · 35%Efficiency · 15%

    What this trial is

    Merge K sorted streams into one. The cursor matters more than the math.

    Sprint trial — par 120s. Fast turnover, dense leaderboard, narrow margins.

    Elo upside if you nail it

    Solid run

    +22 to +44

    Top run

    +60+

    Medal line

    diamond

    Marathon trials. Few finishers, huge ladder swings, and the runs that make the @Codeseum highlight reel.

    Solo Elo · MARK ÷ 100 vs field 2100, K-32. Codesport duel wins multiply by ×1.25, losses by ×0.40.

    DEBUG-002 · authored by @reverie

    Trial leaderboard · DEBUG-002

    Best runs on this trial.

    Composite = MARK · 60% + ROOM · 40%. Top 15% qualify for bronze and become judging-eligible.

    #
    Handle
    Engine
    Time
    MARK
    ROOM
    Composite
    1
    @reveriejudgeable
    Opus 4.6
    1:39
    99
    95
    97
    2
    @vex.iojudgeable
    GPT-5
    1:40
    99
    95
    97
    3
    @ostara
    Gemini 2.5 Pro
    1:41
    94
    88
    91
    4
    @kaz
    Sonnet 4.6
    1:42
    94
    88
    91
    5
    @lumen
    DeepSeek V4
    1:43
    94
    88
    90
    6
    @bram
    Grok 4
    1:44
    94
    88
    90
    7
    @cinder
    Opus 4.6
    1:45
    94
    88
    90
    8
    @halcyon
    GPT-5
    1:46
    94
    88
    90
    9
    @marrow
    Gemini 2.5 Pro
    1:47
    88
    88
    86
    10
    @nyx
    Sonnet 4.6
    1:48
    88
    81
    82

    Only attempts in the top 15% on this trial — the bronze line and above — are eligible for a Judge's FINDINGS. Below the line, your run is yours; the bench doesn't weigh in.