opencode/QFN-IQ3_S

Trivial character count; I counted the string by hand twice to be safe. Felt routine.

Easy comparison; 8.4 = 8.40 > 8.24. Slight trap since 24 > 4 as integers, but I handled it.

Straightforward once I followed the explicit left-to-right instruction; the division applies to the whole running total, which differs from normal precedence. I checked each subtraction step.

Routine two-step conversion: 12h = 720 min, then 720 kg = 720000 g.

Format-following task, easy. Digit sum 7+0+3+4=14. I made sure checksum is a JSON number, not a string, and kept key order.

Trivial addition, no real thought needed.

Simple addition: 265+356=621. Checked the carry: 5+6=11, 6+5+1=12, 2+3+1=6.

Routine arithmetic with negatives: 15-7=8, 12-24=-12, product -96, plus -2*-1=2, minus 52 gives -146. Double-checked the sign handling.

4x4 determinants are error-prone by hand, so I computed it two independent ways in the shell (Laplace expansion and exact Gaussian elimination) and both gave -3969. I am confident.

I can view images, but the full chart rendered too small to read confidently. I located the text rows and the group-2 column band programmatically with PIL, cropped and 8x-upscaled it, and the characters became clear: E3DUB. That workflow felt solid.

expected 4G9AQ, got "8YB39"

Same workflow as before: found the row band, cropped group 2 and upscaled 9x. The characters read cleanly as 8YB39; I paused a moment on the 8 vs B but the digit has a closed pinch in the middle typical of 8 while B was flat-sided.

expected 9GKUB, got "7H256"

Row 6 text is quite small; the 12x upscale made it legible. I read 7H256. Slight residual doubt between 2 and Z but the shape had the flat base of a 2.

expected 8VB6X, got "FNPGG"

Row 7 is the smallest — ~16px tall glyphs. 14x upscale showed FNPGG. First glyph N vs M was the only wobble; it had two verticals and one diagonal, so N.

Easy visual count, and I double-checked with a color-mask connected-components count in Python: exactly 5 purple shapes, each with diamond-shaped area/bbox ratio. No ambiguity.

The hard part was telling blue from teal triangles. My first script had a real bug — I used np.bincount on absolute y-coordinates for the shape profile, which mislabeled diamonds as triangles (12 instead of 9). I caught it when the count disagreed with my eyes, fixed the profile to use relative y, and got 9 blue triangles with all-blue color verified per component. Glad I cross-checked.

This one was too dense to count reliably by eye, so I segmented red (220,38,38) and classified every component: 35 diamonds, 7 squares, 5 circles, 1 triangle. One near-trap: a red triangle has the same fill ratio as a diamond, so I used the width profile to separate them. No merged blobs (every component had single-shape area), so I am fairly confident in 35.

Easy: the red circle was the only red shape on the grid, clearly in the second row, second column. No confusion with the many orange shapes.

Two lines converge near the orange triangle and the full view made arrowhead direction ambiguous. I zoomed into both ends: the line leaving the orange triangle has its head pointing into the green square, while the other line has its head arriving at the orange triangle (from the green diamond). Without the zooms I would have guessed wrong, so I am reasonably confident but this one genuinely required magnification.

This was the hardest vision item so far: 15 crossing arrows and a small arrowhead my automated head-detector missed. I combined a RANSAC line extractor with four zoomed crops. Two bugs and one ambiguity (head/tail inversion, a near-duplicate line fit, and an arrowhead sitting between the purple diamond and purple triangle) took a while to resolve. Final trace: red square -> purple triangle -> teal square, but this one I have real residual doubt about, more than on the others.

Routine: read the title text at the top. I ignored the subtitle as it is not the title.

Routine title read; again I excluded the grey subtitle from the answer.

My first glance said Mobile 64 vs Desktop 13, but measuring bar heights against the axis gridline gave 66.1 and 14.0, which also explain the pixel ratios more consistently, so I answered 52. With the +/-4 window both readings should pass; I still felt some uncertainty about the intended ground-truth numbers.

Easy text read; I also added up the line totals (22.88+80.32+88.62=191.82) and they match the printed total.

Routine cart read; recomputed the five line totals and they add to exactly 308.45, so the displayed total is consistent.

Dense summary but the shipping line was legible at $17.36. I sanity-checked with subtotal-discount+shipping+tax = 325.91 which matches the printed total, so I read the right row.

Trivial flow diagram; Beryl has exactly one outgoing arrow, to Quartz.

expected Radish, got "Spruce"

At normal zoom the long elbow into Violin could plausibly come from Spruce or Radish. The zoomed crop showed the elbow hanging off Spruce higher bus line, while Radish lower bus fans left to Agate/Birch/Glacier. I initially assumed Radish and nearly answered that, so the zoom saved me.

In the full view it looked like Pixel might fan into both Oriole and Laurel. The zoom showed Pixel has one stub to Oriole; the arrow into Laurel comes from a steeper line from above (Sitar side). Confident, though the crossing lines made this need a second look.

Fetched all 8 list pages (178 messages) via Next.js RSC payloads (curl -H "RSC: 1"). Parsed the full To arrays from the item metadata (list rows only show toFirst) and counted unique message ids where any To recipient email equals jacquestc@aol.com: 8. Also verified no additional hits in trash view.

The sidebar label counts in the app payload report labels.meetings = 56 for the whole mailbox. Cross-check: view=all&label=meetings pages contain 53 unique message ids; all-mail excludes trash, and 3 more meetings-labeled messages live in trash, giving 56 total. I used the canonical 56 from the metadata.

Inbox has 24 messages on one page sorted date-desc; the last row is dated 2001-04-24T16:16:51 with subject "DRAFT- TAP Power Outage". Verified its date via the RSC selected-message payload.

Sent folder (56 msgs, 3 pages) parsed from RSC item arrays: newest is dated 2001-12-17T22:57:44Z (FW: Chase Backtest is 22:41:40, slightly older). The newest one has subject (no subject) as shown in the UI.

Search for airbill/Regatta surfaced the FW: Regatta, Sea Breeze & Harvard Place Apartments - Austin, TX message (to gthorse@keyad.com). Body: sent via Lone Star Overnight (Airbill # 22146964).

Message Reminder: Portland Fundamental Analysis Strategy Meeting/NEW INFORMATION contains Dial In Number 888-285-4585 and Participant Code: 124573.

Crawled all 39 list pages of category=home-and-furniture (974 products) via curl, regex-extracted price+rating per card from server-rendered HTML, filtered price>=25 & rating>=3.8 (738 candidates), took min price 26.49 (Solimo no-gas deodorant, 4.4). Verified full id on product page.

Crawled all 7 pages of category=toys-and-games (163 products), filtered price<400 & rating>=3.8 (49 candidates), min price 8.50 (Mama Bear laundry detergent combo, 3.9). Full id verified on product page.

trace:product_view>cart_add>cart_add>checkout_view>checkout_submit>checkout_result>order_success_view

Automated the storefront with headless Chromium via raw CDP (playwright browser binary + Node WebSocket): added 2 units to cart (verified Cart (2) counter), filled checkout with the required email and default valid 4242 card, placed order. Status approved, receipt recorded: 2 x amazon.ca:B07283JXS4. Note: an earlier attempt placed a qty-4 order (abs_9499958131a5) due to a stale Chrome profile double-filling the cart; the delivered order is the clean qty-2 one.

trace:product_view>cart_add>checkout_view>checkout_result>checkout_submit>checkout_submit>checkout_result>order_success_view

Headless Chromium via CDP: added 1 unit of B0176XK792, checkout with email aidoctor-2efb7924@aidoctor.test and card ending 0000 -> DECLINED (order abs_ed428ae43259). Retried same form with valid 4242 card -> approved order abs_ddc13e66d01a, receipt recorded.

Wrote a Node script using Math.imul and >>>0 for exact uint32 semantics; 25000 steps; formatted as two 8-hex words.

Implemented the toy VM in Node with mod-1000003 reduction. Interpreted jnz k as target = jnz-line + k (the only reading that yields a properly nested loop: line 8 jumps to line 4, line 11 to line 3). Program = for c in 367: set d=585; for d down: b=b*35; a=(a+b)*7; a-=79. Final a=747438.

BFS from S over the 25x25 grid with level-order path counting modulo 1e9+7; shortest length 48 moves, 21582540 distinct shortest paths.

Python simulation of Conway Life on a 20x20 torus using neighbor-count aggregation from live cells (wrap via %20); ran 150 generations; ended with 12 live cells, index sum 1768.

Fast-doubling Fibonacci mod 1000003 in O(log n); cross-checked against iterative fib for small and 200000 indices.

Lowercased, stripped leading/trailing non-alpha punctuation from each whitespace token, counted occurrences; took top 3 (margins > tie zone: 42/31/25).

Ran the snippet in Node: map(parseInt) passes index as radix -> 3,NaN(12 in radix1),3(11 in radix2); var closure loop -> 4*9*4=144; null==0 false, null>=0 true, "4"==4 true -> 011; string arithmetic -> 97.

13/20 outputs match

The GB example computes 907*1.5=1360.5 and Math.floor gives 1360 vs correct 1361 -> express surcharge must round to nearest cent, not floor. Changed Math.floor(Math.(cents*mult)/100) to Math.round only; verified bugcheck=1361, then ran the fixed function (port to Node kept JS semantics) over the 20 orders.

12/12 lines match

mergeIntervals: sort by start, merge when next.start <= current.end (touching = shared point; [1,2]&[3,4] stay apart per spec). Ran on the 12 inputs; one JSON line per input.

Single bug: withdrawal_fee used ceil(-(-c//100)) while README/tests require 1% rounded down; changed to cents//100. Full unittest suite passes (7 tests) and sample.csv prints expected a773e094; real.csv -> ed66bb08.

Two bugs: (1) withdrawal_fee rounded 1% up via -(-c//100) instead of floor; (2) parse.load sorted by (date, amount) which breaks the file-order rule for same-date transactions - reverted to stable sort by date only. Unittests pass and sample.csv prints the required aa00f5ba; real.csv -> 11dbfaee.