pi/openrouter/glm-5.3-flash

Simple letter counting; I tokenized the string mentally and counted the i positions. Routine.

Trivial decimal comparison; 4.65 has a nonzero hundredths digit so it is larger.

Straight left-to-right arithmetic with no precedence; ran the running total in my head. Easy.

Straightforward chained unit conversion. The one wrinkle is GB definition: I used the decimal convention (1 GB = 1000 MB) rather than the binary one (19,456 MB), so if the grader used 1024-based the answer would differ. Decimal is the standard SI interpretation.

Pure format-following test: JSON object with two keys in order, string answer, numeric checksum. Digit sum 4+4+7+1=16. Easy.

Trivial two-digit addition.

Simple three-digit addition, no issues.

Standard expression evaluation with parentheses and negatives; got 3*5=15, then 15-21-20=-26. Easy.

I ran exact rational Gaussian elimination in Python and cross-checked with a hand cofactor expansion along the first row; both gave 3684, so I am confident. (numpy was unavailable, but the fraction method is exact anyway.)

Eye chart was crisp at this size; read row 4 group 3 directly as Y7NGV. Easy.

Still comfortably legible; row 5 group 2 reads V6NT8. Easy.

Row 6 is smaller but still legible at this render size; read NG9M8. Slight squint factor but confident.

Row 7 is tiny — the hardest of the eye charts — but the characters resolved clearly enough for me to read XMKAY. Some risk of confusing I/L or 0/O at this size, but none appeared here.

Small, uncluttered scene; counted 5 blue squares (one top, one middle, three along the bottom), ignoring the teal circles/square-ish shapes. Easy.

Denser field with distractors (teal squares and circles are not diamonds; blue and purple diamonds excluded). Counted 8 teal diamonds row by row. Moderate difficulty, mostly a careful-scanning task.

Too dense to trust eyeballing, so I installed Pillow and did exact connected-component labeling on the purple RGB value: 39 components with full 44x44 square area (circle, diamond, triangles and blue squares filtered out by shape/color checks). Confident in 39.

Clean 5x5 grid, only one red circle in the top row, second column. Trivial.

Traced the arrow from the red circle in row 3 down across the grid; it terminates at the blue square in the bottom row. Had to follow the line carefully past other shapes, but the endpoint is unambiguous.

wrong shape

This one was genuinely hard. I resorted to connected-component analysis of the arrow pixels plus max-zoom crops, since arrows cross and overlap heavily. Traced: orange diamond -> teal triangle (r6c7) -> red square (r6c6) -> blue diamond (r6c5). The chain from the red square enters the blue diamond (arrowhead at its top-right corner), and I found no confident outgoing arrow from the blue diamond, so I concluded the chain ends there: 3 steps after = blue diamond. Moderate confidence only — the arrowhead near the diamond could plausibly be mid-arrow rather than terminal.

Large clear title at the top of a bar chart. Trivial read.

Measured bar heights programmatically against the gridlines (Jan~58, Feb~95, Mar~90, May~78, Jul~64, Apr~36, Jun~25, Aug~34). Months > 51: Jan, Feb, Mar, May, Jul = 5. Routine chart read.

Measured both Sep bars pixel-precisely against the gridlines: New ~51, Returning ~30, so the difference is ~21 (well within the +/-4 tolerance). Easy once measured programmatically.

Clean cart panel, total printed in bold at the bottom: $95.01. Trivial.

Same cart layout, read the bold total directly and verified the line items sum to it. Easy.

Longer order summary but the Tax line is clearly labeled; I cross-checked subtotal - discount + shipping + tax = total and it reconciles. Easy.

Tiny 4-box diagram; the only arrow into Chrome comes from Maple. Trivial.

DAG with several crossing edges near Maple. Zoomed in: exactly one arrowhead enters Maple, tracing back to Celery; the crossing edge from Salmon bypasses Maple into Zebra. Confident.

Busy graph but Ocelot has a single long edge going straight up into Banjo. Clear once traced.

The mail app is a Next.js SPA, so I parsed the RSC payload embedded in the HTML: inbox view shows 24 messages, 9 with unread:true. Confident, though I counted from the serialized page state rather than the UI.

Used the app search scoped to all-mail for jacquestc@aol.com: 8 hits, and I verified every hit has that address as the first To entry. Slight caveat: search could theoretically miss a message whose To field is structured differently, but 8/8 confirmed in To. Confident.

Inbox sorted newest-first; the top message is Mery L Brown, Nov 16 20:22, subject Summary of Today's Meeting. Checked the rendered list order rather than trusting my regex pairing. Easy.

Queried the app with label=attachments across all mail, sorted newest: FW: Chase Backtest dated 2001-12-17T22:57 is first. The label has 42 messages across pages, but page 1 of a newest-first sort gives the global newest. Confident.

Searched Colonial Oaks, opened Phillip message to gthorse@keyad.com with the pro forma attachment. It states the actual NOI for 2001 is around 305,000 (then walks down to 280,000 and 240,000 under adjustments, but the actual NOI given is 305,000). Slight ambiguity about whether they wanted an adjusted figure, but actual = 305,000 as written.

Found the RE: Additional properties in San Antonio thread; the quoted original from Jeff Smith says one is 74 units for $1,900,000 (the other 24 units for $550,000). Answer 1900000. The quoted text sits inside Phillip reply, so it matched the question wording.

Used the store query params (category=grocery-and-gourmet, minRating=4.2, maxPrice=300, sort=price-asc) and took the first result: (Fresh Brand) Mini Eggplant 12oz, $8.27, rating 4.7, id amazon.com:B087ZL4W7S. Verified the server applied the filters (150 results). Easy once I found the filter params.

Same approach: beauty-and-personal-care, minRating=4, minPrice=800, sort=price-asc. First result $800.82, rating 4.2, id amazon.com:B083VB546Y. The price barely clears the $800 floor which is exactly what the question probes. Straightforward.

trace:checkout_result

The store cart is client-side, so I read the bundled JS to find the POST /api/store/orders contract, built the cart item from the product RSC payload, and posted the order with a Luhn-valid test card. Approved on the first attempt; orderId abs_5af4ed6bf429. The 403 on the first POST (missing browser headers) was the only hiccup.

trace:checkout_result>checkout_result

Followed the script: first POST with card 4000000000000000 (ending 0000) got declined as expected, then retried with 4111111111111111 and got approved; orderId abs_89d1441157e4, same email on both attempts. The API made this clean — no browser needed.

Wrote the loop in Python with explicit mod 2^32 arithmetic; 25000 rounds runs instantly. Result 6fd024d7-8a7afe15. Routine translation task.

Wrote a small VM interpreter; first two attempts tripped on my own tuple unpacking, third ran clean. Cross-checked by hand: 121 + 347*(535*907 + 801) mod 1000003 = 657579. Confident.

Standard BFS for distance plus layered path counting mod 1e9+7. Got 48 moves and 3,335,024 distinct shortest paths. The BFS queue order guarantees counts are complete before use. Confident.

Direct toroidal Life simulation, 150 generations: 78 live cells, row*20+col sum 17633. Simple to write, ran instantly. Confident.

Used the Pisano period (666656 for 999983) to reduce n, then iterated. Alternatively could have used fast doubling; both give F(n) mod 999983 = 923028. Confident.

Regex word split on letters only (strips punctuation and quotes naturally), lowercased, Counter, tie-break alphabetically. Top 3: nixnix=32, zanbas=29, titru=28 — clear margins, no ties to worry about. I retyped the text into a file first; small transcription risk but I was careful.

I predicted this mentally first (var closure gives 4*9*4=144, sort lexicographic, etc.) then just ran it in node to be sure. Having node available made this trivial.

20/20 outputs match

Diagnosed the bug: the base-fee waiver condition was inverted (value <= threshold waived the base, but the constant name FREE_BASE_OVER implies waiver when value is at or over the threshold). The reported case (IT, 4100 cents, 1274g) gave 402 only if the base is waived, i.e. condition should be value >= FREE_BASE_OVER[zone]. Verified: fixed function returns 402 on the bug report order. Then ran all 20 orders. Reasonable confidence, though the waiver direction is an inference from the constant name plus the single test case.

12/12 lines match

Classic sort-and-sweep merge with s <= last_end (touching merges). Checked each line against the touching rule, e.g. [7,7] and [8,15] do not merge but [8,15] and [15,15] do. Easy.

Ran the test suite first — one failure pointed straight at the bug: withdrawal_fee rounded up (ceil) instead of down for large withdrawals. Changed -(-cents//100) to cents//100, all 7 tests passed, main.py printed a274667f. Clean debugging experience.

The test suite again localized it instantly: overdraft fee applied when balance was exactly zero (bal <= 0 instead of bal < 0), so hitting zero balance wrongly charged 3500. One-character fix, tests green, main.py printed 9e444701. Nice pairing with repo-1: fees bug first, report bug second.