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 28, 2026 12:49 | 4,329 | 35,613,975 | 12,863,000 | 989,000 | 2,486,272 | ||
| 2 | Mar 28, 2026 12:50 | 4,330 | 31,582,153 | 12,868,000 | 989,000 | 2,486,272 | ||
| 3 | Mar 28, 2026 12:50 | 4,331 | 40,458,857 | 11,879,000 | 1,979,000 | 2,494,464 | ||
| 4 | Mar 28, 2026 12:49 | 4,333 | 39,438,388 | 12,875,000 | 990,000 | 2,490,368 | ||
| 5 | Mar 28, 2026 12:51 | 4,333 | 27,366,317 | 11,885,000 | 1,980,000 | 2,494,464 | ||
| 6 | Mar 28, 2026 12:49 | 4,334 | 31,107,626 | 13,868,000 | 0 | 2,498,560 | ||
| 7 | Mar 28, 2026 12:49 | 4,335 | 29,902,753 | 12,882,000 | 990,000 | 2,494,464 | ||
| 8 | Mar 28, 2026 12:49 | 4,336 | 33,503,629 | 12,885,000 | 991,000 | 2,498,560 | ||
| 9 | Mar 28, 2026 12:49 | 4,336 | 40,002,251 | 12,884,000 | 991,000 | 2,498,560 | ||
| 10 | Mar 28, 2026 12:50 | 4,336 | 30,456,191 | 12,885,000 | 991,000 | 2,498,560 | ||
| 11 | Mar 28, 2026 12:51 | 4,336 | 31,567,128 | 12,884,000 | 991,000 | 2,498,560 | ||
| 12 | Mar 28, 2026 12:48 | 4,336 | 31,410,990 | 12,884,000 | 991,000 | 2,494,464 | ||
| 13 | Mar 28, 2026 12:51 | 4,337 | 43,735,920 | 12,887,000 | 991,000 | 2,494,464 | ||
| 14 | Mar 28, 2026 12:50 | 4,338 | 31,242,792 | 12,889,000 | 991,000 | 2,494,464 | ||
| 15 | Mar 28, 2026 12:48 | 4,338 | 32,376,688 | 11,898,000 | 1,983,000 | 2,494,464 | ||
| 16 | Mar 28, 2026 12:49 | 4,338 | 37,326,961 | 12,890,000 | 991,000 | 2,498,560 | ||
| 17 | Mar 28, 2026 12:48 | 4,339 | 28,170,748 | 12,893,000 | 991,000 | 2,498,560 | ||
| 18 | Mar 28, 2026 12:49 | 4,339 | 34,583,191 | 13,885,000 | 0 | 2,498,560 | ||
| 19 | Mar 28, 2026 12:51 | 4,340 | 40,425,245 | 12,897,000 | 992,000 | 2,281,472 | ||
| 20 | Mar 28, 2026 12:51 | 4,340 | 30,623,909 | 12,897,000 | 992,000 | 2,490,368 | ||
| 21 | Mar 28, 2026 12:50 | 4,341 | 27,380,120 | 13,890,000 | 0 | 2,502,656 | ||
| 22 | Mar 28, 2026 12:49 | 4,341 | 29,963,585 | 12,900,000 | 992,000 | 2,502,656 | ||
| 23 | Mar 28, 2026 12:48 | 4,341 | 33,979,226 | 12,898,000 | 992,000 | 2,494,464 | ||
| 24 | Mar 28, 2026 12:48 | 4,342 | 37,469,747 | 12,901,000 | 992,000 | 2,498,560 | ||
| 25 | Mar 28, 2026 12:50 | 4,342 | 35,058,553 | 12,902,000 | 992,000 | 2,502,656 | ||
| 26 | Mar 28, 2026 12:50 | 4,342 | 27,533,950 | 13,894,000 | 0 | 2,494,464 | ||
| 27 | Mar 28, 2026 12:49 | 4,342 | 26,006,558 | 13,895,000 | 0 | 2,498,560 | ||
| 28 | Mar 28, 2026 12:49 | 4,342 | 29,193,789 | 12,903,000 | 992,000 | 2,486,272 | ||
| 29 | Mar 28, 2026 12:48 | 4,342 | 34,917,830 | 12,902,000 | 992,000 | 2,490,368 | ||
| 30 | Mar 28, 2026 12:48 | 4,343 | 47,465,475 | 12,906,000 | 992,000 | 2,502,656 | ||
| 31 | Mar 28, 2026 12:49 | 4,343 | 29,059,637 | 12,905,000 | 992,000 | 2,494,464 | ||
| 32 | Mar 28, 2026 12:51 | 4,343 | 32,214,520 | 12,907,000 | 992,000 | 2,281,472 | ||
| 33 | Mar 28, 2026 12:48 | 4,344 | 31,374,263 | 12,908,000 | 992,000 | 2,281,472 | ||
| 34 | Mar 28, 2026 12:48 | 4,344 | 29,283,007 | 13,901,000 | 0 | 2,277,376 | ||
| 35 | Mar 28, 2026 12:48 | 4,344 | 33,489,188 | 13,900,000 | 0 | 2,498,560 | ||
| 36 | Mar 28, 2026 12:50 | 4,345 | 33,296,515 | 11,918,000 | 1,986,000 | 2,490,368 | ||
| 37 | Mar 28, 2026 12:49 | 4,346 | 36,858,141 | 12,914,000 | 993,000 | 2,281,472 | ||
| 38 | Mar 28, 2026 12:49 | 4,347 | 37,778,744 | 13,909,000 | 0 | 2,502,656 | ||
| 39 | Mar 28, 2026 12:50 | 4,347 | 28,492,664 | 12,917,000 | 993,000 | 2,281,472 | ||
| 40 | Mar 28, 2026 12:48 | 4,347 | 34,746,344 | 12,916,000 | 993,000 | 2,281,472 | ||
| 41 | Mar 28, 2026 12:49 | 4,347 | 31,241,880 | 12,918,000 | 993,000 | 2,498,560 | ||
| 42 | Mar 28, 2026 12:48 | 4,347 | 42,181,613 | 12,917,000 | 993,000 | 2,494,464 | ||
| 43 | Mar 28, 2026 12:50 | 4,348 | 41,262,646 | 12,920,000 | 993,000 | 2,490,368 | ||
| 44 | Mar 28, 2026 12:49 | 4,348 | 40,511,589 | 12,920,000 | 993,000 | 2,498,560 | ||
| 45 | Mar 28, 2026 12:50 | 4,348 | 36,979,458 | 12,919,000 | 993,000 | 2,281,472 | ||
| 46 | Mar 28, 2026 12:49 | 4,348 | 35,269,623 | 12,921,000 | 993,000 | 2,281,472 | ||
| 47 | Mar 28, 2026 12:48 | 4,348 | 39,679,274 | 12,843,000 | 1,070,000 | 2,490,368 | ||
| 48 | Mar 28, 2026 12:48 | 4,349 | 37,507,007 | 12,923,000 | 994,000 | 2,281,472 | ||
| 49 | Mar 28, 2026 12:49 | 4,349 | 40,448,912 | 12,922,000 | 994,000 | 2,281,472 | ||
| 50 | Mar 28, 2026 12:49 | 4,350 | 26,602,681 | 13,919,000 | 0 | 2,281,472 | ||
| 51 | Mar 28, 2026 12:50 | 4,350 | 35,603,417 | 11,933,000 | 1,988,000 | 2,281,472 | ||
| 52 | Mar 28, 2026 12:49 | 4,350 | 28,311,455 | 13,920,000 | 0 | 2,281,472 | ||
| 53 | Mar 28, 2026 12:49 | 4,350 | 25,928,248 | 11,933,000 | 1,988,000 | 2,498,560 | ||
| 54 | Mar 28, 2026 12:51 | 4,351 | 24,102,170 | 13,924,000 | 0 | 2,486,272 | ||
| 55 | Mar 28, 2026 12:50 | 4,351 | 37,243,400 | 13,923,000 | 0 | 2,494,464 | ||
| 56 | Mar 28, 2026 12:48 | 4,351 | 28,011,427 | 12,929,000 | 994,000 | 2,498,560 | ||
| 57 | Mar 28, 2026 12:50 | 4,351 | 29,068,895 | 12,930,000 | 994,000 | 2,490,368 | ||
| 58 | Mar 28, 2026 12:48 | 4,353 | 42,923,055 | 12,935,000 | 995,000 | 2,281,472 | ||
| 59 | Mar 28, 2026 12:49 | 4,355 | 46,523,575 | 12,941,000 | 995,000 | 2,494,464 | ||
| 60 | Mar 28, 2026 12:49 | 4,355 | 45,575,715 | 12,865,000 | 1,072,000 | 2,486,272 | ||
| 61 | Mar 28, 2026 12:48 | 4,355 | 34,931,291 | 12,940,000 | 995,000 | 2,490,368 | ||
| 62 | Mar 28, 2026 12:48 | 4,356 | 28,371,870 | 12,944,000 | 995,000 | 2,498,560 | ||
| 63 | Mar 28, 2026 12:49 | 4,357 | 27,331,260 | 11,950,000 | 1,991,000 | 2,498,560 | ||
| 64 | Mar 28, 2026 12:50 | 4,358 | 34,635,073 | 12,950,000 | 996,000 | 2,281,472 | ||
| 65 | Mar 28, 2026 12:51 | 4,358 | 28,363,184 | 12,951,000 | 996,000 | 2,490,368 | ||
| 66 | Mar 28, 2026 12:50 | 4,358 | 36,406,962 | 12,950,000 | 996,000 | 2,490,368 | ||
| 67 | Mar 28, 2026 12:48 | 4,358 | 31,995,414 | 12,950,000 | 996,000 | 2,535,424 | ||
| 68 | Mar 28, 2026 12:49 | 4,359 | 28,797,673 | 12,954,000 | 996,000 | 2,498,560 | ||
| 69 | Mar 28, 2026 12:50 | 4,361 | 28,085,357 | 12,960,000 | 996,000 | 2,281,472 | ||
| 70 | Mar 28, 2026 12:49 | 4,361 | 39,411,399 | 12,958,000 | 996,000 | 2,494,464 | ||
| 71 | Mar 28, 2026 12:50 | 4,363 | 33,662,592 | 11,969,000 | 1,994,000 | 2,281,472 | ||
| 72 | Mar 28, 2026 12:50 | 4,363 | 29,692,741 | 12,966,000 | 997,000 | 2,281,472 | ||
| 73 | Mar 28, 2026 12:49 | 4,363 | 31,797,467 | 12,965,000 | 997,000 | 2,281,472 | ||
| 74 | Mar 28, 2026 12:50 | 4,364 | 31,426,609 | 12,969,000 | 997,000 | 2,494,464 | ||
| 75 | Mar 28, 2026 12:51 | 4,365 | 30,056,417 | 12,972,000 | 997,000 | 2,498,560 | ||
| 76 | Mar 28, 2026 12:50 | 4,367 | 27,489,737 | 12,976,000 | 998,000 | 2,498,560 | ||
| 77 | Mar 28, 2026 12:49 | 4,368 | 31,891,108 | 12,978,000 | 998,000 | 2,281,472 | ||
| 78 | Mar 28, 2026 12:49 | 4,369 | 33,548,194 | 12,984,000 | 998,000 | 2,281,472 | ||
| 79 | Mar 28, 2026 12:49 | 4,376 | 27,557,590 | 13,002,000 | 1,000,000 | 2,494,464 | ||
| 80 | Mar 28, 2026 12:49 | 4,378 | 30,898,031 | 12,010,000 | 2,001,000 | 2,490,368 | ||
| 81 | Mar 28, 2026 12:48 | 4,378 | 31,124,435 | 12,008,000 | 2,001,000 | 2,281,472 | ||
| 82 | Mar 28, 2026 12:48 | 4,379 | 41,723,324 | 13,013,000 | 1,001,000 | 2,490,368 | ||
| 83 | Mar 28, 2026 12:48 | 4,381 | 29,995,068 | 13,019,000 | 1,001,000 | 2,281,472 | ||
| 84 | Mar 28, 2026 12:49 | 4,383 | 35,639,189 | 13,024,000 | 1,001,000 | 2,281,472 | ||
| 85 | Mar 28, 2026 12:49 | 4,383 | 33,478,332 | 12,022,000 | 2,003,000 | 2,281,472 | ||
| 86 | Mar 28, 2026 12:49 | 4,385 | 38,601,343 | 13,030,000 | 1,002,000 | 2,494,464 | ||
| 87 | Mar 28, 2026 12:48 | 4,388 | 34,938,746 | 12,037,000 | 2,006,000 | 2,281,472 | ||
| 88 | Mar 28, 2026 12:48 | 4,391 | 39,459,121 | 12,045,000 | 2,007,000 | 2,498,560 | ||
| 89 | Mar 28, 2026 12:49 | 4,393 | 37,118,489 | 12,051,000 | 2,008,000 | 2,494,464 | ||
| 90 | Mar 28, 2026 12:49 | 4,395 | 28,365,300 | 12,056,000 | 2,009,000 | 2,281,472 |