Parse JSON 
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.canceledisfalseor absent
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Run Statistics
| # | Date | Score | Wall Time | CPU User | CPU System | Memory | Error | |
|---|---|---|---|---|---|---|---|---|
| 1 | Mar 29, 2026 20:07 | 3,147 | 62,709,216 | 34,621,000 | 0 | 2,404,352 | ||
| 2 | Mar 29, 2026 20:04 | 3,149 | 62,654,396 | 34,635,000 | 0 | 2,396,160 | ||
| 3 | Mar 29, 2026 20:02 | 3,149 | 64,906,273 | 33,625,000 | 1,018,000 | 2,277,376 | ||
| 4 | Mar 29, 2026 19:59 | 3,150 | 60,080,246 | 33,635,000 | 1,019,000 | 2,400,256 | ||
| 5 | Mar 29, 2026 20:09 | 3,151 | 59,252,988 | 33,641,000 | 1,019,000 | 2,396,160 | ||
| 6 | Mar 29, 2026 20:09 | 3,153 | 65,629,131 | 33,666,000 | 1,020,000 | 2,277,376 | ||
| 7 | Mar 29, 2026 20:08 | 3,153 | 65,038,716 | 33,666,000 | 1,020,000 | 2,396,160 | ||
| 8 | Mar 29, 2026 20:00 | 3,153 | 61,958,768 | 34,683,000 | 0 | 2,277,376 | ||
| 9 | Mar 29, 2026 20:01 | 3,154 | 59,444,779 | 33,679,000 | 1,020,000 | 2,277,376 | ||
| 10 | Mar 29, 2026 20:01 | 3,155 | 67,493,667 | 34,709,000 | 0 | 2,396,160 | ||
| 11 | Mar 29, 2026 20:08 | 3,159 | 59,255,987 | 33,723,000 | 1,021,000 | 2,277,376 | ||
| 12 | Mar 29, 2026 20:03 | 3,165 | 60,173,847 | 34,815,000 | 0 | 2,510,848 | ||
| 13 | Mar 29, 2026 20:05 | 3,166 | 61,058,840 | 33,829,000 | 994,000 | 2,277,376 | ||
| 14 | Mar 29, 2026 20:08 | 3,167 | 65,948,266 | 33,845,000 | 995,000 | 2,277,376 | ||
| 15 | Mar 29, 2026 19:58 | 3,167 | 62,688,965 | 33,844,000 | 995,000 | 2,277,376 | ||
| 16 | Mar 29, 2026 19:58 | 3,167 | 65,972,108 | 33,843,000 | 995,000 | 2,277,376 | ||
| 17 | Mar 29, 2026 20:00 | 3,167 | 63,516,675 | 32,849,000 | 1,990,000 | 2,396,160 | ||
| 18 | Mar 29, 2026 19:59 | 3,167 | 60,790,438 | 32,845,000 | 1,990,000 | 2,281,472 | ||
| 19 | Mar 29, 2026 20:00 | 3,167 | 61,790,885 | 33,847,000 | 995,000 | 2,400,256 | ||
| 20 | Mar 29, 2026 19:59 | 3,168 | 66,687,505 | 34,852,000 | 0 | 2,277,376 | ||
| 21 | Mar 29, 2026 20:09 | 3,168 | 63,599,857 | 33,854,000 | 995,000 | 2,396,160 | ||
| 22 | Mar 29, 2026 20:08 | 3,168 | 61,774,869 | 32,860,000 | 1,991,000 | 2,277,376 | ||
| 23 | Mar 29, 2026 20:09 | 3,168 | 61,681,426 | 34,852,000 | 0 | 2,277,376 | ||
| 24 | Mar 29, 2026 20:02 | 3,168 | 61,756,045 | 32,862,000 | 1,991,000 | 2,400,256 | ||
| 25 | Mar 29, 2026 20:04 | 3,168 | 62,282,406 | 33,858,000 | 995,000 | 2,396,160 | ||
| 26 | Mar 29, 2026 20:03 | 3,168 | 63,391,389 | 33,851,000 | 995,000 | 2,392,064 | ||
| 27 | Mar 29, 2026 20:03 | 3,168 | 64,827,778 | 32,857,000 | 1,991,000 | 2,277,376 | ||
| 28 | Mar 29, 2026 20:03 | 3,168 | 59,757,008 | 34,852,000 | 0 | 2,400,256 | ||
| 29 | Mar 29, 2026 20:05 | 3,168 | 62,669,762 | 34,852,000 | 0 | 2,392,064 | ||
| 30 | Mar 29, 2026 20:05 | 3,168 | 60,688,633 | 34,847,000 | 0 | 2,392,064 | ||
| 31 | Mar 29, 2026 19:58 | 3,169 | 64,899,048 | 33,860,000 | 995,000 | 2,396,160 | ||
| 32 | Mar 29, 2026 20:06 | 3,169 | 62,361,335 | 32,869,000 | 1,992,000 | 2,277,376 | ||
| 33 | Mar 29, 2026 20:06 | 3,169 | 61,945,135 | 33,864,000 | 996,000 | 2,396,160 | ||
| 34 | Mar 29, 2026 20:04 | 3,169 | 61,006,311 | 34,858,000 | 0 | 2,277,376 | ||
| 35 | Mar 29, 2026 20:04 | 3,170 | 63,324,039 | 32,877,000 | 1,992,000 | 2,506,752 | ||
| 36 | Mar 29, 2026 19:58 | 3,170 | 62,362,082 | 32,874,000 | 1,992,000 | 2,404,352 | ||
| 37 | Mar 29, 2026 20:06 | 3,170 | 60,903,835 | 33,841,000 | 1,025,000 | 2,277,376 | ||
| 38 | Mar 29, 2026 20:07 | 3,171 | 55,312,895 | 32,890,000 | 1,993,000 | 2,396,160 | ||
| 39 | Mar 29, 2026 20:04 | 3,171 | 60,487,260 | 33,880,000 | 996,000 | 2,277,376 | ||
| 40 | Mar 29, 2026 20:03 | 3,172 | 56,676,185 | 33,868,000 | 1,026,000 | 2,396,160 | ||
| 41 | Mar 29, 2026 20:07 | 3,172 | 61,387,531 | 33,894,000 | 996,000 | 2,277,376 | ||
| 42 | Mar 29, 2026 19:58 | 3,173 | 62,621,134 | 33,901,000 | 997,000 | 2,277,376 | ||
| 43 | Mar 29, 2026 19:58 | 3,173 | 57,297,497 | 33,903,000 | 997,000 | 2,277,376 | ||
| 44 | Mar 29, 2026 20:01 | 3,174 | 57,771,062 | 33,918,000 | 997,000 | 2,277,376 | ||
| 45 | Mar 29, 2026 20:08 | 3,174 | 64,233,519 | 32,923,000 | 1,995,000 | 2,277,376 | ||
| 46 | Mar 29, 2026 19:59 | 3,174 | 59,419,998 | 33,913,000 | 997,000 | 2,396,160 | ||
| 47 | Mar 29, 2026 20:06 | 3,176 | 57,531,971 | 33,940,000 | 998,000 | 2,387,968 | ||
| 48 | Mar 29, 2026 20:00 | 3,176 | 54,698,141 | 32,939,000 | 1,996,000 | 2,277,376 | ||
| 49 | Mar 29, 2026 20:00 | 3,176 | 58,004,452 | 32,938,000 | 1,996,000 | 2,396,160 | ||
| 50 | Mar 29, 2026 19:59 | 3,176 | 62,274,170 | 32,936,000 | 1,996,000 | 2,396,160 | ||
| 51 | Mar 29, 2026 20:02 | 3,177 | 59,464,741 | 32,947,000 | 1,996,000 | 2,400,256 | ||
| 52 | Mar 29, 2026 20:03 | 3,177 | 56,653,137 | 33,950,000 | 998,000 | 2,408,448 | ||
| 53 | Mar 29, 2026 20:06 | 3,177 | 59,847,696 | 32,947,000 | 1,996,000 | 2,277,376 | ||
| 54 | Mar 29, 2026 20:09 | 3,178 | 56,136,013 | 33,963,000 | 998,000 | 2,519,040 | ||
| 55 | Mar 29, 2026 20:09 | 3,180 | 55,316,242 | 33,976,000 | 999,000 | 2,273,280 | ||
| 56 | Mar 29, 2026 19:59 | 3,181 | 61,593,067 | 33,994,000 | 999,000 | 2,396,160 | ||
| 57 | Mar 29, 2026 20:04 | 3,182 | 56,730,584 | 34,007,000 | 1,000,000 | 2,277,376 | ||
| 58 | Mar 29, 2026 20:00 | 3,182 | 57,412,999 | 32,999,000 | 1,999,000 | 2,277,376 | ||
| 59 | Mar 29, 2026 20:08 | 3,182 | 59,075,200 | 32,999,000 | 1,999,000 | 2,400,256 | ||
| 60 | Mar 29, 2026 20:06 | 3,183 | 57,448,978 | 33,014,000 | 2,000,000 | 2,277,376 |