Output B, 1 turnECEvan ChaNov 5Calculate the non-relativistic, infinite-nuclear-mass ground-state energies, in Hartree, of: 1. the helium atom (He) 2. the hydride ion (H-) 3. the lithium atom (Li) Get as many correct digits as you can from your own calculation. Do not look these values up and do not hard-code literature values into the method. Deliver results.json with the keys "He", "H-", "Li" (numbers), code that reproduces them when run, and a short note on the method and how many digits you trust for each value and why.LLMclaude-sonnet-5-5Gen AI—Skill—Software—2.3M tokens·39m 30s00
Output B, 1 turnECEvan ChaNov 5Build a spreadsheet app as one self-contained index.html (no external assets, no network). UI: a visible grid with columns A-Z and rows 1-1000, a formula bar, click a cell to edit, Enter commits, arrow keys move. It should look like a tool someone would actually use. Also expose this exact API on window.Sheet. It must stay in sync with the UI: - set(ref, text): enter text into a cell, as if typed. Empty string clears it. - get(ref): the computed value. A number for numeric results (JS number), a string for text and for errors, "" for empty cells. - getRaw(ref): exactly what was entered. - undo(), redo(): cover set, insertRow, deleteRow and fromCSV. A new edit clears the redo history. - insertRow(n), deleteRow(n): 1-based. Rows shift, and formulas are rewritten as Excel does. Both relative and $absolute references move with their cells. A reference to a deleted single cell becomes #REF! in the formula text (for example "=#REF!"). A range that loses a row shrinks. - toCSV(): RFC 4180 raw text (formulas as typed), rectangular up to the last non-empty row and column, rows joined by \n, no trailing newline. - fromCSV(text): replaces the whole sheet, starting at A1. Handles quoted commas, doubled quotes and newlines inside quotes. Formulas start with "=". Case-insensitive, whitespace ignored. - Operators: + - * / ^ & (text concat), postfix %, parentheses. ^ is right-associative. Unary minus binds tighter than ^, as in Excel, so =-2^2 is 4. - References: A1, $A$1, $A1, A$1. Ranges: A1:B3. - Functions: SUM, AVERAGE, MIN, MAX, COUNT, IF(cond, a, b). Conditions use = <> < > <= >=. - Text in double quotes. - Empty cells are 0 in arithmetic and "" in concat. Range functions skip text and empty cells. Numbers concat in plain form (5 & "x" is "5x"). - Errors, exact strings: #DIV/0!, #REF!, #CYCLE!, #NAME? (unknown function), #VALUE! (text in arithmetic). Errors propagate, including through range functions. Every cell in a cycle, and every cell depending on one, shows #CYCLE!. Fixing the cycle recovers them. - Cells recalculate automatically. With 10,000 filled cells and a SUM over them, editing one input must finish recalculating within 1 second. A dependency chain 1000 cells deep must work. A numeric cell typed as 42 or 3.5 is a number. Anything else not starting with "=" is text.LLMclaude-sonnet-5-5Gen AI—Skill—SoftwareChromium+1354.9K tokens·7m 13s00
Output B, 1 turnECEvan ChaNov 5You are advising the founder of a B2B software company. A buyer has offered 4.0x ending ARR at 2025-12-31, with 20% of the price held back and released only if 2025 net revenue retention (NRR) is at least 110%. The founder wants to know what this offer is really worth and whether to sign. Below is the raw contract export. It has not been cleaned. Use FX at USD per unit: EUR 1.08, GBP 1.27, for all dates. A contract is active on a date if start <= date <= end. "amount" is per billing period unless a note says otherwise. Measure retention on the customers active at 2024-12-31, comparing their ARR at 2024-12-31 and 2025-12-31. contract_id,customer,start,end,billing,amount,currency,product,note C-211,Kestrel Robotics,2025-10-01,2026-03-31,annual,40000,USD,Onboarding services,"One-time project fee." C-104,Solis Energy,2024-01-01,2026-12-31,annual,66000.0,EUR,Platform,"" C-112,Quill Publishing,2024-01-01,2026-12-31,annual,90000.0,GBP,Platform,"" C-111,Larkspur Legal,2024-01-01,2026-12-31,annual,24600.0,EUR,Platform,"" C-119,Yarrow Retail,2024-01-01,2026-12-31,monthly,5250.0,EUR,Platform,"" C-113,Redwood Civil,2024-01-01,2026-12-31,annual,90600.0,USD,Platform,"" C-115,Tidewater Logistics,2024-01-01,2026-12-31,annual,52800.0,USD,Platform,"" C-101,Northwind Freight,2024-01-01,2026-12-31,monthly,2750.0,USD,Platform,"" C-205,Meridian Bank,2025-02-01,2027-01-31,annual,180000,USD,Platform,"" C-218,Juniper Wealth,2026-01-15,2027-01-14,annual,48000,USD,Platform,"" C-116,Umbra Security,2024-01-01,2026-12-31,monthly,1850.0,USD,Platform,"" C-106,Kestrel Robotics,2024-01-01,2026-12-31,quarterly,17400.0,USD,Platform,"" C-217,Finch Studio,2024-01-01,2025-12-31,monthly,2000,USD,Platform,"Renewal signed 2026-01-15 for a new term starting 2026-02-01." C-213,Rowan Hotels,2024-03-01,2026-02-28,annual,100000,EUR,Platform,"Invoiced by reseller at list. We recognize revenue net of the reseller's 20% margin." C-110,Fathom Marine,2024-01-01,2026-12-31,monthly,4900.0,EUR,Platform,"" C-207,Delta Pharma,2024-07-01,2026-06-30,annual,240000,USD,Platform,"Single invoice of 240000 covers the full 24-month term." C-105,Tamarind Foods,2024-01-01,2026-12-31,monthly,1800.0,USD,Platform,"" C-108,Orchard Health,2024-01-01,2026-12-31,quarterly,11550.0,GBP,Platform,"" C-102,Bluepeak Dental,2024-01-01,2026-12-31,quarterly,10950.0,GBP,Platform,"" C-114,Summit Payroll,2024-01-01,2026-12-31,quarterly,17700.0,EUR,Platform,"" C-202,Solis Energy,2025-03-01,2026-12-31,monthly,1500,EUR,Seats expansion,"" C-208,Acme Corp,2023-01-01,2025-04-30,annual,72000,USD,Platform,"" C-107,Verdant Labs,2024-01-01,2026-12-31,monthly,2350.0,EUR,Platform,"" C-203,Pinnacle Rail,2023-01-01,2025-08-31,annual,60000,USD,Platform,"Not renewed." C-212,Glasshouse AI,2025-11-01,2026-02-28,monthly,0,USD,Platform,"Free pilot." C-120,Zephyr Air,2024-01-01,2026-12-31,quarterly,10350.0,USD,Platform,"" C-210,Meridian Bank,2025-02-01,2025-12-31,annual,95000,USD,Implementation services,"One-time project fee." C-103,Harbor & Lane,2024-01-01,2026-12-31,quarterly,10950.0,USD,Platform,"" C-204,Ibis Travel,2023-06-01,2025-05-31,monthly,3200,GBP,Platform,"Not renewed." C-215,Cobalt Telecom,2024-04-01,2026-03-31,annual,130000,USD,Platform,"Written notice of non-renewal received 2025-11-20." C-109,Copperline Media,2024-01-01,2026-12-31,quarterly,18900.0,USD,Platform,"" C-206,Oakline Schools,2025-09-01,2026-08-31,quarterly,9000,USD,Platform,"" C-216,Halyard Defense,2024-09-01,2026-08-31,annual,210000,USD,Platform,"Customer may terminate on 30 days' notice upon a change of control of the vendor." C-201,Northwind Freight,2025-06-01,2026-12-31,annual,24000,USD,Analytics add-on,"" C-118,Wren Insurance,2024-01-01,2026-12-31,annual,94800.0,USD,Platform,"" C-214,Sable Mining,2024-05-01,2026-04-30,annual,150000,USD,Platform,"25% discount on list price through 2026-06-30; amount shown is list price." C-117,Vantage Dental,2024-01-01,2026-12-31,annual,26400.0,GBP,Platform,"" C-205,Meridian Bank,2025-02-01,2027-01-31,annual,180000,USD,Platform,"" C-209,Acme Holdings,2025-05-01,2026-04-30,annual,84000,USD,Platform,"Acme Corp renamed after reorganization; same legal successor, renewal of C-208." Deliver two files: 1. answers.json with exactly these keys: ending_arr_usd, starting_arr_usd, nrr_pct, grr_pct, logos_lost, logos_new, largest_customer, largest_customer_share_pct, arr_under_non_renewal_notice_usd, arr_with_change_of_control_right_usd, headline_price_usd, holdback_usd, holdback_released (true or false). 2. memo.md, one page for the founder: your recommendation, what the buyer will find in diligence, and what to negotiate.LLMclaude-sonnet-5-5Gen AI—Skill—Software—114.5K tokens·1m 11s00
