✦   The vault stands open. Ye've already proven thy worth.   ✦
Finnegan O'Goldsworth

Finnegan's Vault

Ah, thank the shamrocks ye've arrived.

I'm Finnegan O'Goldsworth, keeper of Pot #7 and the most swindled leprechaun in all of Ireland. The jealous ones have been stuffing me ledger with fraudulent entries, and now me vault won't open. It only accepts the true balance.

I'm a fine cobbler and an excellent vanisher, but spreadsheets aren't me strong suit.

Download the ledger, throw out anything marked cursed, and tell me vault what Pot #7 is really worth. The gold and the glory will be yours.

See the Challenge Go to the Vault
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The Grand Ledger

Download the ledger file below. It is a JSONL file, one transaction per line. Each transaction records the movement of gold coins into or out of one of Finnegan's pots.

The fraudulent entries are marked cursed. Your task:

  1. Filter for pot_id = 7 only.
  2. Exclude any transaction where cursed is true.
  3. Sum all deposit amounts.
  4. Subtract all withdrawal amounts.
  5. Enter the resulting balance in the vault below.

Each transaction looks like this:

{ "id": "txn_00001", "pot_id": 7, "type": "deposit", "amount": 412, "cursed": false, "memo": "Morning harvest, east field", "timestamp": "1847-03-17T08:22:00Z" }
⬇ Download the Grand Ledger

ledger.jsonl · ~50,000 transactions

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The Vault

The vault is open, friend.
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The Gold and the Glory

Ye've done it. Finnegan's gold is safe, and we're impressed. If you're looking for your next adventure, we'd love to see your resume.

Your Resume (PDF)
No file chosen

Ye've done it. We'll be in touch.