"""Lean RULER subsets: first 20 items per task (13 tasks) at 4K/32K/128K -> 260 rows each."""
import json, os, collections
os.chdir(os.path.expanduser("~/bench/data"))
for n in ["4k", "32k", "128k"]:
    rows = [json.loads(l) for l in open(f"ruler_{n}.jsonl")]
    seen, out = collections.Counter(), []
    for r in rows:
        if seen[r["task"]] < 20:
            out.append(r); seen[r["task"]] += 1
    with open(f"ruler_{n}_260.jsonl", "w") as f:
        for r in out:
            f.write(json.dumps(r, ensure_ascii=False) + "\n")
    print(f"ruler_{n}_260.jsonl", len(out), dict(seen) == {t: 20 for t in seen}, len(seen), "tasks")