Claude Haiku 5.5 (effort default (no --effort flag) · thinking on) on Tide height by rule of twelfths and cosine, with under-keel clearance windows

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  "result": "`solve.py` is written and runs in about 0.02 s on the given input. It produces `answer.json` and `tide.svg`, and the SVG parses as valid XML.\n\nFor `input.json`:\n- **Required height:** 1.54 m.\n- **Safe window, twelfths:** minutes 722 to 937.\n- **Safe window, cosine:** minutes 722 to 937.\n- **Max method difference:** 0.05 m.\n- **Queries:** the 597 query is unsafe (UKC 0.02), the 767 query is safe (UKC 0.995), and the rest are as expected.\n\nI spot-checked the twelfths height at t=628 by hand (1.049 m) and the window start at t=722 against the 1.54 m threshold. I also ran a falling-tide fresh input (3.1 m to 0.5 m) to confirm the falling case produces a sensible window.\n\nChoices I made where the spec was open:\n- **`tide.svg` location:** it is written next to `answer.json`, so `python solve.py input.json answer.json` puts it in the current directory.\n- **Safety test:** `safe` and the window use the unrounded height against the required height with the 1e-9 tolerance. Heights and UKC are rounded to 3 decimals only in the output.\n- **UKC and `safe`:** both use the rule-of-twelfths height, as the spec's UKC formula says.\n- **Window end:** a qualifying run is reported with its true end minute, not the minute where it first reached the required length.\n- **Degenerate input:** if the two events share a time, the fraction is set to 0 before the event and 1 at or after it.\n\nThis is not a git repository, so I did not commit anything.",
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