Parse integers 
Compute the sum of integers read from STDIN as fast as possible.
Input: 50 000 000 lines, each containing one integer in the range [0; 2147483647].
629871117
2024562523
1372689083
1021777120
2111176472
Output: The uint64 sum of all numbers, printed as a decimal string.
Note: Integer overflow is expected – use a 64-bit accumulator.
Source Code
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Challenge History
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Run Statistics
| # | Date | Score | Wall Time | CPU User | CPU System | Memory | Error | |
|---|---|---|---|---|---|---|---|---|
| 1 | Mar 24, 2026 21:56 | 3,420 | 54,460,487 | 27,374,000 | 1,013,000 | 2,449,408 | ||
| 2 | Mar 20, 2026 03:44 | 3,424 | 51,046,732 | 27,408,000 | 1,015,000 | 2,437,120 | ||
| 3 | Mar 20, 2026 03:44 | 3,426 | 54,208,490 | 27,421,000 | 1,015,000 | 2,519,040 | ||
| 4 | Mar 20, 2026 03:44 | 3,426 | 50,924,551 | 27,423,000 | 1,015,000 | 2,523,136 | ||
| 5 | Mar 20, 2026 03:44 | 3,427 | 50,408,036 | 27,432,000 | 1,016,000 | 2,514,944 | ||
| 6 | Mar 20, 2026 03:44 | 3,436 | 48,963,586 | 27,497,000 | 1,018,000 | 2,519,040 | ||
| 7 | Mar 24, 2026 21:55 | 3,437 | 54,680,553 | 27,509,000 | 1,018,000 | 2,437,120 | ||
| 8 | Mar 24, 2026 21:56 | 3,438 | 51,983,425 | 27,513,000 | 1,019,000 | 2,445,312 | ||
| 9 | Mar 20, 2026 03:46 | 3,439 | 62,623,279 | 27,528,000 | 1,019,000 | 2,441,216 | ||
| 10 | Mar 20, 2026 03:46 | 3,441 | 47,687,925 | 27,542,000 | 1,020,000 | 2,437,120 | ||
| 11 | Mar 21, 2026 01:12 | 3,442 | 58,635,579 | 27,551,000 | 1,020,000 | 2,523,136 | ||
| 12 | Mar 21, 2026 01:08 | 3,442 | 56,406,550 | 27,546,000 | 1,020,000 | 2,445,312 | ||
| 13 | Mar 24, 2026 21:56 | 3,443 | 52,073,365 | 27,556,000 | 1,020,000 | 2,445,312 | ||
| 14 | Mar 21, 2026 01:12 | 3,443 | 61,214,357 | 27,559,000 | 1,020,000 | 2,433,024 | ||
| 15 | Mar 20, 2026 03:44 | 3,448 | 54,851,668 | 26,577,000 | 2,044,000 | 2,441,216 | ||
| 16 | Mar 20, 2026 04:45 | 3,453 | 51,960,181 | 27,638,000 | 1,023,000 | 2,478,080 | ||
| 17 | Mar 21, 2026 01:12 | 3,453 | 55,669,904 | 27,639,000 | 1,023,000 | 2,519,040 | ||
| 18 | Mar 21, 2026 22:45 | 3,459 | 58,458,250 | 27,686,000 | 1,025,000 | 2,523,136 | ||
| 19 | Mar 21, 2026 22:11 | 3,474 | 55,857,413 | 26,843,000 | 1,988,000 | 2,514,944 | ||
| 20 | Mar 20, 2026 03:44 | 3,474 | 52,622,465 | 26,844,000 | 1,988,000 | 2,445,312 | ||
| 21 | Mar 23, 2026 01:30 | 3,475 | 52,641,930 | 26,853,000 | 1,989,000 | 2,523,136 | ||
| 22 | Mar 23, 2026 01:30 | 3,476 | 53,733,760 | 27,854,000 | 994,000 | 2,510,848 | ||
| 23 | Mar 24, 2026 21:56 | 3,478 | 58,618,290 | 27,874,000 | 995,000 | 2,523,136 | ||
| 24 | Mar 22, 2026 17:04 | 3,485 | 54,247,308 | 26,931,000 | 1,994,000 | 2,490,368 | ||
| 25 | Mar 23, 2026 01:30 | 3,492 | 53,582,617 | 26,982,000 | 1,998,000 | 2,445,312 | ||
| 26 | Mar 21, 2026 22:11 | 3,495 | 52,364,972 | 27,005,000 | 2,000,000 | 2,519,040 | ||
| 27 | Mar 21, 2026 22:45 | 3,495 | 55,862,227 | 27,009,000 | 2,000,000 | 2,519,040 | ||
| 28 | Mar 20, 2026 12:26 | 3,500 | 47,727,908 | 26,043,000 | 3,005,000 | 2,527,232 | ||
| 29 | Mar 24, 2026 21:56 | 3,500 | 52,103,493 | 27,048,000 | 2,003,000 | 2,441,216 | ||
| 30 | Mar 20, 2026 04:45 | 3,507 | 52,336,979 | 27,099,000 | 2,007,000 | 2,523,136 | ||
| 31 | Mar 20, 2026 03:46 | 3,513 | 61,117,084 | 27,148,000 | 2,010,000 | 2,437,120 | ||
| 32 | Mar 20, 2026 04:45 | 3,532 | 54,453,386 | 28,306,000 | 1,010,000 | 2,437,120 | ||
| 33 | Mar 21, 2026 22:11 | 3,533 | 47,550,845 | 28,315,000 | 1,011,000 | 2,531,328 | ||
| 34 | Mar 24, 2026 21:56 | 3,537 | 50,684,357 | 28,343,000 | 1,012,000 | 2,527,232 | ||
| 35 | Mar 24, 2026 21:56 | 3,548 | 56,484,230 | 28,431,000 | 1,015,000 | 2,523,136 | ||
| 36 | Mar 20, 2026 12:26 | 3,550 | 52,127,574 | 28,452,000 | 1,016,000 | 2,519,040 | ||
| 37 | Mar 22, 2026 17:04 | 3,552 | 51,400,291 | 28,467,000 | 1,016,000 | 2,437,120 | ||
| 38 | Mar 20, 2026 12:26 | 3,596 | 58,253,382 | 28,852,000 | 994,000 | 2,519,040 | ||
| 39 | Mar 21, 2026 01:08 | 3,606 | 55,664,304 | 27,936,000 | 1,995,000 | 2,441,216 | ||
| 40 | Mar 20, 2026 03:44 | 3,620 | 52,824,780 | 28,041,000 | 2,002,000 | 2,437,120 | ||
| 41 | Mar 21, 2026 01:08 | 3,628 | 53,222,839 | 28,103,000 | 2,007,000 | 2,437,120 | ||
| 42 | Mar 21, 2026 22:45 | 3,635 | 51,781,503 | 28,160,000 | 2,011,000 | 2,449,408 | ||
| 43 | Mar 24, 2026 21:55 | 3,640 | 58,107,410 | 28,196,000 | 2,014,000 | 2,437,120 | ||
| 44 | Mar 24, 2026 21:55 | 3,650 | 56,619,101 | 29,282,000 | 1,009,000 | 2,441,216 | ||
| 45 | Mar 24, 2026 21:56 | 3,651 | 56,193,622 | 29,297,000 | 1,010,000 | 2,523,136 | ||
| 46 | Mar 20, 2026 03:44 | 3,653 | 61,430,555 | 29,308,000 | 1,010,000 | 2,269,184 | ||
| 47 | Mar 22, 2026 17:04 | 3,656 | 51,363,851 | 29,330,000 | 1,011,000 | 2,437,120 | ||
| 48 | Mar 24, 2026 21:56 | 3,678 | 53,655,462 | 29,509,000 | 1,017,000 | 2,523,136 |