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 20:54 | 4,322 | 31,023,806 | 12,842,000 | 987,000 | 2,490,368 | ||
| 2 | Mar 28, 2026 20:53 | 4,334 | 43,726,013 | 12,880,000 | 990,000 | 2,498,560 | ||
| 3 | Mar 28, 2026 20:53 | 4,337 | 27,608,767 | 13,878,000 | 0 | 2,539,520 | ||
| 4 | Mar 28, 2026 20:55 | 4,337 | 31,460,113 | 12,886,000 | 991,000 | 2,502,656 | ||
| 5 | Mar 28, 2026 20:52 | 4,337 | 31,745,979 | 12,888,000 | 991,000 | 2,281,472 | ||
| 6 | Mar 28, 2026 20:54 | 4,337 | 28,940,857 | 12,888,000 | 991,000 | 2,482,176 | ||
| 7 | Mar 28, 2026 20:55 | 4,338 | 29,149,549 | 13,880,000 | 0 | 2,494,464 | ||
| 8 | Mar 28, 2026 20:55 | 4,338 | 29,806,250 | 12,889,000 | 991,000 | 2,498,560 | ||
| 9 | Mar 28, 2026 20:53 | 4,338 | 32,113,376 | 13,883,000 | 0 | 2,494,464 | ||
| 10 | Mar 28, 2026 20:54 | 4,338 | 31,127,444 | 12,891,000 | 991,000 | 2,281,472 | ||
| 11 | Mar 28, 2026 20:54 | 4,339 | 29,197,032 | 13,885,000 | 0 | 2,494,464 | ||
| 12 | Mar 28, 2026 20:54 | 4,339 | 28,956,859 | 12,895,000 | 991,000 | 2,281,472 | ||
| 13 | Mar 28, 2026 20:52 | 4,340 | 29,961,399 | 12,896,000 | 992,000 | 2,502,656 | ||
| 14 | Mar 28, 2026 20:54 | 4,340 | 33,098,335 | 12,896,000 | 992,000 | 2,498,560 | ||
| 15 | Mar 28, 2026 20:52 | 4,340 | 37,288,452 | 12,897,000 | 992,000 | 2,494,464 | ||
| 16 | Mar 28, 2026 20:54 | 4,341 | 27,408,539 | 12,900,000 | 992,000 | 2,506,752 | ||
| 17 | Mar 28, 2026 20:53 | 4,341 | 27,414,362 | 12,900,000 | 992,000 | 2,281,472 | ||
| 18 | Mar 28, 2026 20:52 | 4,342 | 32,934,912 | 12,902,000 | 992,000 | 2,281,472 | ||
| 19 | Mar 28, 2026 20:55 | 4,342 | 31,540,820 | 11,910,000 | 1,985,000 | 2,486,272 | ||
| 20 | Mar 28, 2026 20:54 | 4,343 | 35,570,534 | 12,905,000 | 992,000 | 2,498,560 | ||
| 21 | Mar 28, 2026 20:52 | 4,343 | 29,772,020 | 12,904,000 | 992,000 | 2,502,656 | ||
| 22 | Mar 28, 2026 20:52 | 4,343 | 26,171,371 | 12,906,000 | 992,000 | 2,281,472 | ||
| 23 | Mar 28, 2026 20:53 | 4,344 | 31,491,130 | 11,916,000 | 1,986,000 | 2,498,560 | ||
| 24 | Mar 28, 2026 20:53 | 4,345 | 26,877,459 | 12,911,000 | 993,000 | 2,281,472 | ||
| 25 | Mar 28, 2026 20:54 | 4,346 | 33,360,750 | 13,908,000 | 0 | 2,498,560 | ||
| 26 | Mar 28, 2026 20:55 | 4,346 | 32,211,196 | 13,907,000 | 0 | 2,494,464 | ||
| 27 | Mar 28, 2026 20:52 | 4,346 | 29,305,654 | 12,914,000 | 993,000 | 2,281,472 | ||
| 28 | Mar 28, 2026 20:53 | 4,347 | 34,217,388 | 12,918,000 | 993,000 | 2,281,472 | ||
| 29 | Mar 28, 2026 20:54 | 4,347 | 31,382,521 | 11,924,000 | 1,987,000 | 2,498,560 | ||
| 30 | Mar 28, 2026 20:52 | 4,347 | 33,850,153 | 11,922,000 | 1,987,000 | 2,498,560 | ||
| 31 | Mar 28, 2026 20:55 | 4,347 | 39,362,457 | 12,916,000 | 993,000 | 2,281,472 | ||
| 32 | Mar 28, 2026 20:54 | 4,348 | 32,081,467 | 13,912,000 | 0 | 2,502,656 | ||
| 33 | Mar 28, 2026 20:55 | 4,348 | 31,661,851 | 12,919,000 | 993,000 | 2,281,472 | ||
| 34 | Mar 28, 2026 20:52 | 4,348 | 43,898,838 | 12,921,000 | 993,000 | 2,494,464 | ||
| 35 | Mar 28, 2026 20:53 | 4,348 | 35,300,539 | 12,920,000 | 993,000 | 2,281,472 | ||
| 36 | Mar 28, 2026 20:53 | 4,349 | 26,975,705 | 13,916,000 | 0 | 2,502,656 | ||
| 37 | Mar 28, 2026 20:52 | 4,349 | 26,223,849 | 13,918,000 | 0 | 2,494,464 | ||
| 38 | Mar 28, 2026 20:55 | 4,349 | 33,328,641 | 12,924,000 | 994,000 | 2,490,368 | ||
| 39 | Mar 28, 2026 20:53 | 4,350 | 33,388,342 | 12,927,000 | 994,000 | 2,281,472 | ||
| 40 | Mar 28, 2026 20:55 | 4,351 | 31,253,021 | 12,928,000 | 994,000 | 2,281,472 | ||
| 41 | Mar 28, 2026 20:52 | 4,351 | 37,688,584 | 11,934,000 | 1,989,000 | 2,494,464 | ||
| 42 | Mar 28, 2026 20:55 | 4,352 | 38,122,829 | 11,938,000 | 1,989,000 | 2,498,560 | ||
| 43 | Mar 28, 2026 20:54 | 4,352 | 30,792,613 | 12,931,000 | 994,000 | 2,494,464 | ||
| 44 | Mar 28, 2026 20:53 | 4,353 | 41,372,077 | 12,934,000 | 994,000 | 2,498,560 | ||
| 45 | Mar 28, 2026 20:52 | 4,353 | 29,288,592 | 11,941,000 | 1,990,000 | 2,281,472 | ||
| 46 | Mar 28, 2026 20:54 | 4,353 | 42,414,294 | 12,935,000 | 995,000 | 2,281,472 | ||
| 47 | Mar 28, 2026 20:52 | 4,353 | 31,444,741 | 11,940,000 | 1,990,000 | 2,498,560 | ||
| 48 | Mar 28, 2026 20:55 | 4,354 | 26,949,334 | 12,939,000 | 995,000 | 2,494,464 | ||
| 49 | Mar 28, 2026 20:54 | 4,354 | 28,430,358 | 12,937,000 | 995,000 | 2,498,560 | ||
| 50 | Mar 28, 2026 20:54 | 4,355 | 33,627,047 | 11,946,000 | 1,991,000 | 2,281,472 | ||
| 51 | Mar 28, 2026 20:53 | 4,356 | 36,048,929 | 12,945,000 | 995,000 | 2,494,464 | ||
| 52 | Mar 28, 2026 20:54 | 4,358 | 27,560,962 | 12,949,000 | 996,000 | 2,277,376 | ||
| 53 | Mar 28, 2026 20:54 | 4,358 | 30,754,789 | 12,949,000 | 996,000 | 2,281,472 | ||
| 54 | Mar 28, 2026 20:54 | 4,359 | 32,448,088 | 12,953,000 | 996,000 | 2,490,368 | ||
| 55 | Mar 28, 2026 20:53 | 4,359 | 31,717,661 | 12,953,000 | 996,000 | 2,281,472 | ||
| 56 | Mar 28, 2026 20:52 | 4,360 | 30,075,741 | 11,958,000 | 1,993,000 | 2,498,560 | ||
| 57 | Mar 28, 2026 20:53 | 4,360 | 36,468,485 | 12,957,000 | 996,000 | 2,494,464 | ||
| 58 | Mar 28, 2026 20:53 | 4,360 | 38,570,505 | 11,959,000 | 1,993,000 | 2,502,656 | ||
| 59 | Mar 28, 2026 20:52 | 4,361 | 35,523,293 | 12,959,000 | 996,000 | 2,486,272 | ||
| 60 | Mar 28, 2026 20:52 | 4,361 | 31,694,964 | 12,959,000 | 996,000 | 2,281,472 | ||
| 61 | Mar 28, 2026 20:55 | 4,363 | 29,513,263 | 12,964,000 | 997,000 | 2,281,472 | ||
| 62 | Mar 28, 2026 20:53 | 4,363 | 39,610,598 | 12,966,000 | 997,000 | 2,281,472 | ||
| 63 | Mar 28, 2026 20:52 | 4,365 | 46,977,268 | 12,971,000 | 997,000 | 2,502,656 | ||
| 64 | Mar 28, 2026 20:52 | 4,365 | 31,020,675 | 12,970,000 | 997,000 | 2,502,656 | ||
| 65 | Mar 28, 2026 20:52 | 4,366 | 33,272,433 | 11,975,000 | 1,995,000 | 2,506,752 | ||
| 66 | Mar 28, 2026 20:53 | 4,366 | 43,333,429 | 11,975,000 | 1,995,000 | 2,494,464 | ||
| 67 | Mar 28, 2026 20:55 | 4,367 | 28,989,862 | 12,977,000 | 998,000 | 2,281,472 | ||
| 68 | Mar 28, 2026 20:54 | 4,368 | 31,072,566 | 11,980,000 | 1,996,000 | 2,486,272 | ||
| 69 | Mar 28, 2026 20:55 | 4,373 | 38,731,128 | 12,993,000 | 999,000 | 2,281,472 | ||
| 70 | Mar 28, 2026 20:53 | 4,373 | 27,193,799 | 11,995,000 | 1,999,000 | 2,535,424 | ||
| 71 | Mar 28, 2026 20:53 | 4,374 | 26,443,937 | 11,999,000 | 1,999,000 | 2,281,472 | ||
| 72 | Mar 28, 2026 20:54 | 4,375 | 31,577,736 | 13,001,000 | 1,000,000 | 2,498,560 | ||
| 73 | Mar 28, 2026 20:53 | 4,375 | 36,073,403 | 13,001,000 | 1,000,000 | 2,498,560 | ||
| 74 | Mar 28, 2026 20:54 | 4,376 | 26,297,052 | 13,003,000 | 1,000,000 | 2,494,464 | ||
| 75 | Mar 28, 2026 20:54 | 4,376 | 31,678,368 | 13,004,000 | 1,000,000 | 2,281,472 | ||
| 76 | Mar 28, 2026 20:55 | 4,376 | 34,022,847 | 13,003,000 | 1,000,000 | 2,494,464 | ||
| 77 | Mar 28, 2026 20:52 | 4,377 | 30,234,661 | 12,005,000 | 2,000,000 | 2,494,464 | ||
| 78 | Mar 28, 2026 20:53 | 4,378 | 29,757,989 | 12,008,000 | 2,001,000 | 2,486,272 | ||
| 79 | Mar 28, 2026 20:52 | 4,382 | 30,375,234 | 12,018,000 | 2,003,000 | 2,490,368 | ||
| 80 | Mar 28, 2026 20:53 | 4,383 | 31,883,391 | 12,022,000 | 2,003,000 | 2,498,560 | ||
| 81 | Mar 28, 2026 20:52 | 4,383 | 31,633,693 | 13,023,000 | 1,001,000 | 2,281,472 | ||
| 82 | Mar 28, 2026 20:52 | 4,383 | 28,863,336 | 12,023,000 | 2,003,000 | 2,494,464 | ||
| 83 | Mar 28, 2026 20:55 | 4,384 | 39,653,027 | 12,025,000 | 2,004,000 | 2,281,472 | ||
| 84 | Mar 28, 2026 20:53 | 4,387 | 30,175,870 | 12,033,000 | 2,005,000 | 2,494,464 | ||
| 85 | Mar 28, 2026 20:53 | 4,389 | 29,653,849 | 13,041,000 | 1,003,000 | 2,281,472 | ||
| 86 | Mar 28, 2026 20:54 | 4,389 | 35,153,186 | 12,039,000 | 2,006,000 | 2,490,368 | ||
| 87 | Mar 28, 2026 20:55 | 4,395 | 30,870,939 | 12,055,000 | 2,009,000 | 2,281,472 | ||
| 88 | Mar 28, 2026 20:55 | 4,396 | 30,053,736 | 12,059,000 | 2,009,000 | 2,281,472 | ||
| 89 | Mar 28, 2026 20:54 | 4,396 | 30,664,570 | 12,059,000 | 2,009,000 | 2,494,464 | ||
| 90 | Mar 28, 2026 20:52 | 4,407 | 27,925,335 | 13,095,000 | 1,007,000 | 2,281,472 |