Parse JSON Sergey Svistunov

Compute the total amount of non-canceled external USD transactions from a stream of JSON records as fast as possible.

Input: 1 000 000 JSON records on STDIN, one per line. Each record has the following structure:

{
    "user_id": 0,
    "currency": "USD",
    "transactions": [
        {
            "amount": 0,
            "to_user_id": 0,
            "canceled": false
        }
    ]
}
Field Constraints
user_id Integer, max 10 000
currency One of "GBP", "USD", "RUB", "JPY", "CHF"
transactions Array, max 10 elements
amount Integer, max 1000
canceled Boolean; may be omitted when false

Field order is not guaranteed within any object.

Output: The total amount of all transactions where:

  • record.currency == "USD"
  • transaction.to_user_id != record.user_id (external)
  • transaction.canceled is false or absent
Restrictions:60s512Mb 1 Score Packages
Back to listMay 3, 2021 00:33Yuriy LyfenkoYuriy LyfenkoError
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Run Statistics
#DateScoreWall TimeCPU UserCPU SystemMemoryError
1May 3, 2021 00:3300000Wrong answer: expected: 403661989 got: 1}]332 7}]31 8}]1441 2}]6249 4}]8862 6}]03 8}]05 1}]366 6}]783 1}]4565 7}]18 4}]744 5}]59 1}]52 3}]281 1}]2687 7}]688 9}]48 1}]986 0}]288 9}]19 3}]02 2}]01 7}]90 1}]6808 2}]43 5}]99 9}]80 7}]8001 1}]08 0}]121 9}...