Count uint8 
Count the number of bytes equal to 127 in a binary stream as fast as possible.
Input: 250 000 000 uint8 values in binary on STDIN.
Output: The count of elements equal to 127, printed as a decimal string.
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 21, 2026 04:09 | 4,332 | 29,223,826 | 13,863,000 | 0 | 2,502,656 | ||
| 2 | Mar 12, 2026 02:40 | 4,333 | 29,876,049 | 12,877,000 | 990,000 | 2,273,280 | ||
| 3 | Mar 21, 2026 04:09 | 4,335 | 31,293,664 | 12,881,000 | 990,000 | 2,273,280 | ||
| 4 | Mar 10, 2026 04:24 | 4,336 | 32,516,901 | 12,884,000 | 991,000 | 2,494,464 | ||
| 5 | Mar 12, 2026 02:40 | 4,337 | 30,708,953 | 13,877,000 | 0 | 2,273,280 | ||
| 6 | Mar 12, 2026 02:38 | 4,337 | 31,564,516 | 12,887,000 | 991,000 | 2,273,280 | ||
| 7 | Mar 10, 2026 06:06 | 4,338 | 28,726,577 | 13,880,000 | 0 | 2,273,280 | ||
| 8 | Mar 10, 2026 06:06 | 4,338 | 32,966,732 | 12,891,000 | 991,000 | 2,498,560 | ||
| 9 | Mar 10, 2026 06:08 | 4,338 | 29,775,771 | 12,890,000 | 991,000 | 2,498,560 | ||
| 10 | Mar 10, 2026 04:32 | 4,338 | 33,929,826 | 12,892,000 | 991,000 | 2,494,464 | ||
| 11 | Mar 12, 2026 02:38 | 4,338 | 37,940,976 | 12,890,000 | 991,000 | 2,482,176 | ||
| 12 | Mar 12, 2026 02:38 | 4,338 | 30,768,661 | 12,892,000 | 991,000 | 2,498,560 | ||
| 13 | Mar 12, 2026 02:40 | 4,338 | 35,573,903 | 13,881,000 | 0 | 2,273,280 | ||
| 14 | Mar 12, 2026 02:40 | 4,338 | 30,097,794 | 13,881,000 | 0 | 2,273,280 | ||
| 15 | Mar 12, 2026 02:38 | 4,339 | 27,973,228 | 11,902,000 | 1,983,000 | 2,494,464 | ||
| 16 | Mar 10, 2026 06:06 | 4,339 | 29,317,567 | 12,894,000 | 991,000 | 2,494,464 | ||
| 17 | Mar 10, 2026 04:24 | 4,339 | 40,820,569 | 12,893,000 | 991,000 | 2,494,464 | ||
| 18 | Mar 10, 2026 04:24 | 4,339 | 37,302,396 | 12,895,000 | 991,000 | 2,273,280 | ||
| 19 | Mar 10, 2026 06:06 | 4,340 | 38,146,507 | 12,897,000 | 992,000 | 2,494,464 | ||
| 20 | Mar 12, 2026 02:40 | 4,340 | 30,906,139 | 12,897,000 | 992,000 | 2,498,560 | ||
| 21 | Mar 10, 2026 04:24 | 4,340 | 36,397,133 | 12,897,000 | 992,000 | 2,498,560 | ||
| 22 | Mar 10, 2026 04:24 | 4,340 | 29,885,347 | 12,896,000 | 992,000 | 2,494,464 | ||
| 23 | Mar 20, 2026 21:26 | 4,341 | 30,704,439 | 12,900,000 | 992,000 | 2,494,464 | ||
| 24 | Mar 12, 2026 02:40 | 4,341 | 43,398,020 | 12,899,000 | 992,000 | 2,494,464 | ||
| 25 | Mar 10, 2026 06:06 | 4,341 | 32,357,970 | 12,899,000 | 992,000 | 2,531,328 | ||
| 26 | Mar 10, 2026 06:06 | 4,341 | 29,240,270 | 13,892,000 | 0 | 2,273,280 | ||
| 27 | Mar 12, 2026 02:38 | 4,342 | 33,015,079 | 12,903,000 | 992,000 | 2,273,280 | ||
| 28 | Mar 10, 2026 06:06 | 4,343 | 36,052,694 | 12,905,000 | 992,000 | 2,494,464 | ||
| 29 | Mar 10, 2026 04:29 | 4,343 | 25,549,010 | 12,906,000 | 992,000 | 2,531,328 | ||
| 30 | Mar 10, 2026 04:24 | 4,343 | 40,370,206 | 12,904,000 | 992,000 | 2,494,464 | ||
| 31 | Mar 12, 2026 02:38 | 4,343 | 27,215,821 | 12,904,000 | 992,000 | 2,498,560 | ||
| 32 | Mar 10, 2026 04:32 | 4,343 | 35,890,079 | 12,904,000 | 992,000 | 2,269,184 | ||
| 33 | Mar 12, 2026 02:40 | 4,344 | 36,646,737 | 12,909,000 | 993,000 | 2,490,368 | ||
| 34 | Mar 10, 2026 06:06 | 4,344 | 33,070,734 | 12,908,000 | 992,000 | 2,273,280 | ||
| 35 | Mar 12, 2026 02:41 | 4,345 | 39,087,064 | 12,911,000 | 993,000 | 2,498,560 | ||
| 36 | Mar 10, 2026 06:06 | 4,345 | 37,008,517 | 12,910,000 | 993,000 | 2,273,280 | ||
| 37 | Mar 10, 2026 04:24 | 4,345 | 34,756,718 | 13,904,000 | 0 | 2,273,280 | ||
| 38 | Mar 10, 2026 04:29 | 4,345 | 39,120,734 | 13,905,000 | 0 | 2,273,280 | ||
| 39 | Mar 10, 2026 04:32 | 4,347 | 39,939,520 | 12,916,000 | 993,000 | 2,273,280 | ||
| 40 | Mar 20, 2026 21:26 | 4,349 | 30,009,027 | 12,923,000 | 994,000 | 2,531,328 | ||
| 41 | Mar 21, 2026 03:12 | 4,352 | 37,267,335 | 12,932,000 | 994,000 | 2,273,280 | ||
| 42 | Mar 12, 2026 02:38 | 4,352 | 34,331,267 | 12,931,000 | 994,000 | 2,273,280 | ||
| 43 | Mar 10, 2026 04:24 | 4,353 | 28,086,621 | 12,935,000 | 995,000 | 2,531,328 | ||
| 44 | Mar 10, 2026 06:08 | 4,354 | 38,312,390 | 12,938,000 | 995,000 | 2,498,560 | ||
| 45 | Mar 10, 2026 06:06 | 4,355 | 35,588,496 | 12,942,000 | 995,000 | 2,273,280 | ||
| 46 | Mar 12, 2026 02:40 | 4,356 | 30,308,350 | 12,943,000 | 995,000 | 2,502,656 | ||
| 47 | Mar 20, 2026 21:26 | 4,357 | 40,432,346 | 12,946,000 | 995,000 | 2,273,280 | ||
| 48 | Mar 12, 2026 02:41 | 4,358 | 36,018,916 | 12,950,000 | 996,000 | 2,498,560 | ||
| 49 | Mar 10, 2026 06:06 | 4,358 | 31,166,864 | 11,952,000 | 1,992,000 | 2,273,280 | ||
| 50 | Mar 12, 2026 02:40 | 4,359 | 41,993,025 | 12,953,000 | 996,000 | 2,502,656 | ||
| 51 | Mar 10, 2026 06:08 | 4,361 | 28,311,281 | 12,960,000 | 996,000 | 2,490,368 | ||
| 52 | Mar 21, 2026 04:09 | 4,363 | 30,641,643 | 12,965,000 | 997,000 | 2,273,280 | ||
| 53 | Mar 10, 2026 04:29 | 4,363 | 37,135,764 | 12,964,000 | 997,000 | 2,273,280 | ||
| 54 | Mar 12, 2026 04:16 | 4,364 | 27,742,824 | 12,969,000 | 997,000 | 2,531,328 | ||
| 55 | Mar 10, 2026 06:06 | 4,365 | 46,566,546 | 12,970,000 | 997,000 | 2,273,280 | ||
| 56 | Mar 21, 2026 03:12 | 4,368 | 30,445,898 | 12,978,000 | 998,000 | 2,273,280 | ||
| 57 | Mar 12, 2026 02:41 | 4,371 | 32,789,849 | 12,988,000 | 999,000 | 2,498,560 | ||
| 58 | Mar 21, 2026 03:12 | 4,372 | 30,829,411 | 12,992,000 | 999,000 | 2,273,280 | ||
| 59 | Mar 10, 2026 04:24 | 4,381 | 32,705,077 | 13,018,000 | 1,001,000 | 2,273,280 | ||
| 60 | Mar 12, 2026 03:42 | 4,390 | 38,067,651 | 13,044,000 | 1,003,000 | 2,494,464 | ||
| 61 | Mar 12, 2026 03:42 | 4,391 | 29,457,032 | 13,049,000 | 1,003,000 | 2,527,232 | ||
| 62 | Mar 12, 2026 03:42 | 4,392 | 36,776,292 | 13,050,000 | 1,003,000 | 2,482,176 | ||
| 63 | Mar 12, 2026 04:16 | 4,480 | 27,336,745 | 14,336,000 | 0 | 2,273,280 | ||
| 64 | Mar 12, 2026 02:38 | 4,492 | 34,460,032 | 13,348,000 | 1,026,000 | 2,273,280 | ||
| 65 | Mar 12, 2026 02:38 | 4,498 | 26,674,699 | 14,394,000 | 0 | 2,273,280 | ||
| 66 | Mar 12, 2026 04:16 | 4,651 | 39,987,214 | 13,892,000 | 992,000 | 2,273,280 |