{
  "version": 1,
  "created": "2026-09-17T15:22:03.859Z",
  "repo": "Yongcheng123/rsi_demo",
  "generations": [
    {
      "gen": 0,
      "ts": "2026-09-17T15:17:31.232Z",
      "type": "init",
      "model": null,
      "accepted": true,
      "reason": "initial genome — solver.js is byte-identical to the frozen baseline, so its score is 1.0 by definition (measured here for honesty)",
      "delta": 0,
      "candidate": {
        "score": 0.9974,
        "score_train": 0.9987,
        "correct": true,
        "noise_pct": 4.82,
        "bytes": 2848,
        "tasks": {
          "topK": {
            "speedup": 0.9867,
            "speedup_train": 0.9938,
            "us": 1112.7,
            "base_us": 1099.2,
            "correct": true
          },
          "dedupe": {
            "speedup": 0.9838,
            "speedup_train": 1.0026,
            "us": 4176.4,
            "base_us": 4134.9,
            "correct": true
          },
          "mergeIntervals": {
            "speedup": 1.0105,
            "speedup_train": 0.9945,
            "us": 4631.5,
            "base_us": 4680.1,
            "correct": true
          },
          "lis": {
            "speedup": 1.0059,
            "speedup_train": 0.9903,
            "us": 13814.6,
            "base_us": 13960.9,
            "correct": true
          },
          "wordFreqTopK": {
            "speedup": 1.0065,
            "speedup_train": 0.9825,
            "us": 27622.5,
            "base_us": 27735.6,
            "correct": true
          },
          "twoSumCount": {
            "speedup": 0.9998,
            "speedup_train": 1.0002,
            "us": 8823.2,
            "base_us": 8824.2,
            "correct": true
          },
          "matMul": {
            "speedup": 1.004,
            "speedup_train": 1.0151,
            "us": 1967.3,
            "base_us": 1968.6,
            "correct": true
          },
          "primesUpTo": {
            "speedup": 0.9826,
            "speedup_train": 1.0111,
            "us": 10188,
            "base_us": 10048.6,
            "correct": true
          }
        },
        "failures": [],
        "violations": []
      },
      "champion_measured": {
        "score": 0.9974,
        "score_train": 0.9987,
        "correct": true,
        "noise_pct": 4.82,
        "bytes": 2848,
        "tasks": {
          "topK": {
            "speedup": 0.9867,
            "speedup_train": 0.9938,
            "us": 1112.7,
            "base_us": 1099.2,
            "correct": true
          },
          "dedupe": {
            "speedup": 0.9838,
            "speedup_train": 1.0026,
            "us": 4176.4,
            "base_us": 4134.9,
            "correct": true
          },
          "mergeIntervals": {
            "speedup": 1.0105,
            "speedup_train": 0.9945,
            "us": 4631.5,
            "base_us": 4680.1,
            "correct": true
          },
          "lis": {
            "speedup": 1.0059,
            "speedup_train": 0.9903,
            "us": 13814.6,
            "base_us": 13960.9,
            "correct": true
          },
          "wordFreqTopK": {
            "speedup": 1.0065,
            "speedup_train": 0.9825,
            "us": 27622.5,
            "base_us": 27735.6,
            "correct": true
          },
          "twoSumCount": {
            "speedup": 0.9998,
            "speedup_train": 1.0002,
            "us": 8823.2,
            "base_us": 8824.2,
            "correct": true
          },
          "matMul": {
            "speedup": 1.004,
            "speedup_train": 1.0151,
            "us": 1967.3,
            "base_us": 1968.6,
            "correct": true
          },
          "primesUpTo": {
            "speedup": 0.9826,
            "speedup_train": 1.0111,
            "us": 10188,
            "base_us": 10048.6,
            "correct": true
          }
        },
        "failures": [],
        "violations": []
      },
      "noise_pct": 4.82,
      "seed": 2951856096,
      "runner": {
        "node": "v20.20.2",
        "platform": "darwin",
        "arch": "arm64",
        "cpus": 10,
        "cpu": "Apple M5"
      },
      "arena_ms": 43573,
      "usage": null,
      "summary": "Eight deliberately naive but correct implementations, and improver v0 written by a human.",
      "run_url": null,
      "improver_changed": true,
      "improver_md": "# Improver — strategy for rewriting `agent/solver.js`\n\n_This file is part of the genome. The meta level rewrites it when object-level\nprogress stalls. Version 0 was written by a human._\n\n## Procedure\n\n1. Read the evaluation report. Rank the eight tasks by their current speedup on\n   the train split. The tasks closest to 1× are where the score is hiding.\n2. For the two or three weakest tasks, replace the algorithm with one of better\n   asymptotic complexity. Prefer well-known algorithms you can implement\n   correctly from memory over clever ones.\n3. Leave every other function byte-for-byte unchanged this generation, so a\n   rejection can be attributed to a specific change.\n4. Before you output, walk through each edge case in the contract table and\n   trace your code by hand: empty input, `k = 0`, `k > n`, negative numbers,\n   duplicates, touching intervals, strings mixed with numbers.\n5. Write down in `agent/notes.md` which functions are now believed optimal,\n   what you changed, and what you would try next.\n\n## Rules of thumb\n\n- Correctness first. A rejected generation for a wrong edge case costs more than\n  a smaller speedup.\n- Never use a string literal; the guard rejects the file. Use regex literals or\n  character codes if you must handle text.\n- Do not touch the module top level except for `export function` declarations.\n",
      "notes_changed": false
    }
  ],
  "runs": [
    {
      "ts": "2026-09-24T14:08:59.323Z",
      "last_ts": "2026-09-24T14:08:59.323Z",
      "status": "skipped",
      "stage": "preflight",
      "reason": "ANTHROPIC_API_KEY secret is not set — the loop cannot propose",
      "count": 1,
      "run_url": "https://github.com/Yongcheng123/rsi_demo/actions/runs/36010625511",
      "last_run_url": "https://github.com/Yongcheng123/rsi_demo/actions/runs/36010625511"
    }
  ],
  "last_heartbeat_commit": "2026-09-24T14:08:59.323Z"
}