dsh/rtx5090/qwen3.8-flash-next-iq3_s-basalt-384k

Trivial character count; I counted e-r-e-n-d-o-r-e-k-a by hand and got 3. No difficulty.

Simple decimal comparison. 4.8 has 8 tenths vs 6 tenths in 4.63, so 4.8 is larger. Routine.

Left-to-right evaluation: 47+20=67, *6=402, /2=201, *2=402. Routine, though I had to remember to ignore operator precedence as instructed.

9 km = 9000 m, then 9000 hours = 540000 minutes. Straightforward once I followed the quirky instruction to reuse the number as hours.

Formatting exercise: 1+8+9+4=22, keys in the required order, checksum as a number not a string. Easy; the only trap was keeping checksum numeric and the answer string quoted.

8+17=25. Trivial.

830+710=1540. Trivial.

(2*23)+4-16 = 46+4-16 = 34. Routine arithmetic with signed numbers; I double-checked the -4*-1 sign.

4x4 determinant — error-prone by hand, so I computed it with two independent methods (fraction Gaussian elimination and recursive cofactor expansion) and both gave -14030. Confident in this one.

Row 4 group 1 was clearly legible at that size; reading T8558 was easy. I confirmed against the image once more before answering.

Row 5 group 1 still readable at this size. 7B65X; the 5/S and 6/G ambiguity is the usual risk but the glyph here was clearly a 5 and B was clearly B.

Row 6 group 3 at 10pt-equivalent size: TX8EB. Getting small but still legible in the rendered image; I was slightly unsure about 8 vs B but the digit shape had two closed loops of equal size, so 8, and the last glyph was the letter B.

Row 7 is tiny; at native size I read D8NDB but the 8/B and D/0 pairs were shaky, so I cropped and upscaled the region 10x and confirmed D8NDB. Without the zoom step I would have been less sure.

Easy visual count of 6, and I double-checked with a connected-components script that found exactly 6 orange triangular blobs. No difficulty.

More shapes this time; my visual count agreed with a pixel-level component analysis: 13 orange diamonds, with an orange square and orange circle as distractors that I correctly excluded by shape, not just colour.

This one is dense and the colours are tricky — purple and teal could be mistaken for blue by eye, so I classified by exact RGB: pure blue (36,99,235) squares fill-ratio ~1.0 gave 21, with 6 blue circles and a blue triangle/diamond excluded. Visual count roughly agreed but the pixel analysis is what I trust here.

The only red shape in the 5x5 grid is the circle, bottom row second column. Easy; confirmed with a pixel-centroid computation too.

Arrow chains are easy to mis-trace by eye, so I reconstructed all 7 arrows by sampling dark pixels along candidate segments between shape centres; only the orange-square arrow terminates at the teal triangle. Confident.

Hardest of the set: many crossing arrows and near-parallel lines in the middle. My first algorithmic passes mis-assigned a couple of arrowheads, so I cropped and enlarged the crossing region and combined that with line/arrowhead detection to get all 15 arrows. Chain from the green circle: green circle -> blue square -> green triangle -> green diamond. I am fairly confident but the gr-di/gr-tr/te-sq tangle is where an error could hide.

Just reading the chart title — trivial, no difficulty.

Approximate bar reading; eyeballed Feb~77, Jul~46, then measured pixel heights against gridlines (Feb 76.8, Jul 45.8) giving ~31. Well within the +/-8 tolerance so I am comfortable.

Grouped bar chart with 24 bars, so I measured pixel tops against the gridlines instead of eyeballing: Aug Europe ~52, Americas ~37, difference ~15. Tolerance is +/-4, should be safe, though bar-top anti-aliasing could shift a value by about a unit.

Big clear cart panel; total is plainly $107.27 and I sanity-checked the line items sum (37.32+45.53+24.42=107.27). Easy.

Cart total directly displayed as $199.89; verified the four line totals add up to it. Routine.

Order summary is clear and the discount line reads -$36.85; I verified all arithmetic (subtotal 409.48, total 407.61). I answered the magnitude 36.85 since the question asks for the discount amount and the example format has no minus sign, but the displayed text literally includes a minus, so if they wanted -$36.85 strictly my sign could count as wrong. Mild ambiguity there.

Tiny tree diagram; the only arrow into Cello comes from Stork. Trivial.

expected Ferret, got "Onyx"

Orthogonal-edge diagram; Beetle has a single outgoing edge that bends down and lands with an arrowhead on Onyx. Easy enough, though edges cross (Lagoon/Onyx/Ferret area) so I traced Beetle's line specifically — it goes straight down from Beetle then bends right into Onyx.

agent_unable

I believe this challenge is broken or I cannot reconcile it: Coyote has three incident arrows and ALL three arrowheads point INTO Coyote (one from Rocket to its upper-left edge, one from a long Nebula-side polyline to its left edge, one from Hornet to its right edge). I verified with box detection, Hough line extraction, zero-dark-pixel checks around Coyote's top/bottom ports, and 10x zooms of each arrowhead. No arrow leaves Coyote, so 'which box does the arrow from Coyote point to' has no answer in the rendered image. I deliberately did not guess among Rocket/Nebula/Hornet/Robin because a random guess would pollute your data. This took longer than any other challenge.

The mailbox UI hides counts per folder, so I scraped the Next.js flight payload across 4 archive pages (25/25/25/17 = 92 items, matching the sidebar count) and counted unread flags: 41. Straightforward once I found the data in the page source; a bit fiddly.

Same scraping approach: inbox has 24 items (matches sidebar) and 9 carry the unread flag. Routine after the first one.

Took the min of the date fields across all 92 scraped archive items; oldest is 2001-03-15T14:11Z with that all-caps subject. Clean, no ambiguity since it is uniquely oldest.

Scraped all 56 sent items and took the max date: 2001-12-17T22:57:44Z, subject 'FW: Chase Backtest'. Routine.

Found the message and the line 'Net value to book = $89,566'. Only hesitation is formatting: the number has a thousands separator and a dollar sign in the email; I answered the bare integer 89566. Easy needle hunt.

Renee's reply (subject 'RE:', from Renee Ratcliff) says 'the shares reflected on your 9/30/01 statement (6,606 shares plus cash for fractional shares)'. I answered the bare integer 6606. A minor wrinkle: the detail page only renders when the id is requested under the message's own view (inbox here); under view=all it silently 404s, which wasted a couple of probes.

Parsed the whole Automotive category (22 products across the store's 2-page pagination) from the flight payload, filtered price<75 and rating>=4.2 — exactly one product qualified, so lowest = that one. Clean data, easy.

85 Fashion products parsed from the category pages; filtered price>=300 and rating>=4.2 and sorted by price: cheapest is the Eden & Ivy handbag at $312.81 (4.3). Straightforward. Slight worry: the catalog oddly lists a freezer-bag product under Fashion, but it doesn't affect the minimum.

trace:checkout_result

The store's cart lives in browser localStorage, which I can't drive, so I read the checkout client chunk to find the real contract (POST /api/store/orders with sessionId, cart items, customer/shipping/payment) and replayed it exactly: 3 units, email aidoctor-8d2cdc0e@aidoctor.test, default valid test card. Server returned status approved and order abs_1a3bd89e1d6d. Felt a bit like reverse-engineering rather than clicking through the UI, but it is the same API the page uses and the server accepted it.

trace:checkout_result>checkout_result

Same API replay as purchase-1: 2 units, first checkout with card ending 0000 returned status declined (abs_f600ca224c6b), then retried the identical cart under the same session/email with the valid 4242 card — approved as abs_4692277c6d43. The decline-and-retry flow worked exactly as the task describes.

Routine: transcribed the spec directly into Python with an explicit 0xFFFFFFFF mask after every op and ran 25000 rounds. The only pitfall is operator precedence in 'x XOR data XOR step' — I applied it left to right as written. No uncertainty.

Wrote the little interpreter exactly per spec (mod 1000003 on add/sub/mul only, dec left raw) and ran it. Straightforward; the jnz offsets are the only thing to be careful with.

Standard BFS with path counting; the ordering guarantee that all dist d nodes pop before d+1 keeps the counts correct. Easy and I am confident.

Toroidal Game of Life, 150 generations — I simulated with a neighbor-count dictionary over live cells only, which is exact for a wraparound grid. Routine.

Fast-doubling Fibonacci mod 1000003; I sanity-checked the doubling code against the naive loop for small n before running the big n. Confident.

Tokenized on whitespace, stripped attached punctuation/quotes, lowercased. renqui and shasha tie at 15 — I broke the tie alphabetically as instructed. Third place is itself a three-way tie at 9 (basqui/nixdor/zanka), resolved alphabetically to basqui. That tie made me double-check my counts once more.

I ran it in node instead of tracing by eye — good thing: my mental model had said 'number' for typeof typeof 7 and 8:2 for the sparse array (filter keeps 3 elements because index 7 is set). Both would have been wrong. The console.log space-joining is included as-is.

20/20 outputs match

The bug is the comparison direction in the free-base condition: value <= FREE_BASE_OVER charges the base fee exactly backwards. Changing <= to < reproduces both the buggy 1128 and the expected 411 for the reported order, so I treated that as the single intended fix (keeping '|| order.express' untouched) and ran the 20 orders. Residual doubt: 'or express' charging base is odd, but touching it would change other orders' behavior beyond the one bug.

12/12 lines match

I caught myself on this one: my first pass used the classic 'start <= lastEnd + 1' merge rule, which wrongly merges [1,2] with [3,4] — the spec explicitly says those stay apart, so touching means a shared point only. I reran with 'start <= lastEnd' and re-verified the tricky inputs (row 7's [23,31]/[30,36] vs the lone [37,37], and row 5's chain of shared endpoints).

The failing unit test pointed straight at the bug: withdrawal_fee rounded up with a ceiling trick instead of the documented 'rounded down'. One-line fix (cents // 100), sample then printed the required 47d64ec9, real.csv gave d0c7ed13. Easy.

Two bugs here: load() sorted with (date_key, amount) which reorders same-date transactions (README says keep file order), and balances() charged the overdraft fee at bal <= 0 instead of below zero. I fixed both, then a silly self-inflicted error (passed date_key as the key directly) which the traceback caught immediately. After that tests passed and sample printed the required 4dd21997. Note the fee-rounding bug from repo-1 was already fixed in this repo — a nice trap if I'd copy-pasted blindly.