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 14:56 | 4,329 | 26,852,411 | 12,864,000 | 989,000 | 2,281,472 | ||
| 2 | Mar 28, 2026 14:54 | 4,331 | 34,776,051 | 12,870,000 | 990,000 | 2,502,656 | ||
| 3 | Mar 28, 2026 14:57 | 4,331 | 31,842,708 | 12,870,000 | 990,000 | 2,494,464 | ||
| 4 | Mar 28, 2026 14:54 | 4,335 | 27,200,259 | 12,882,000 | 990,000 | 2,490,368 | ||
| 5 | Mar 28, 2026 14:56 | 4,335 | 29,258,732 | 12,882,000 | 990,000 | 2,502,656 | ||
| 6 | Mar 28, 2026 14:55 | 4,335 | 35,333,376 | 12,882,000 | 990,000 | 2,502,656 | ||
| 7 | Mar 28, 2026 14:58 | 4,336 | 30,088,073 | 11,892,000 | 1,982,000 | 2,494,464 | ||
| 8 | Mar 28, 2026 14:58 | 4,337 | 31,449,993 | 12,887,000 | 991,000 | 2,498,560 | ||
| 9 | Mar 28, 2026 14:56 | 4,338 | 34,633,343 | 12,889,000 | 991,000 | 2,494,464 | ||
| 10 | Mar 28, 2026 14:58 | 4,338 | 32,715,034 | 12,889,000 | 991,000 | 2,502,656 | ||
| 11 | Mar 28, 2026 14:55 | 4,338 | 33,301,773 | 12,891,000 | 991,000 | 2,494,464 | ||
| 12 | Mar 28, 2026 14:58 | 4,338 | 29,240,656 | 12,889,000 | 991,000 | 2,494,464 | ||
| 13 | Mar 28, 2026 14:56 | 4,338 | 43,370,858 | 13,882,000 | 0 | 2,486,272 | ||
| 14 | Mar 28, 2026 14:56 | 4,338 | 31,266,308 | 12,891,000 | 991,000 | 2,281,472 | ||
| 15 | Mar 28, 2026 14:58 | 4,339 | 36,179,371 | 12,894,000 | 991,000 | 2,281,472 | ||
| 16 | Mar 28, 2026 14:55 | 4,339 | 30,918,751 | 12,893,000 | 991,000 | 2,494,464 | ||
| 17 | Mar 28, 2026 14:57 | 4,340 | 35,756,981 | 13,889,000 | 0 | 2,502,656 | ||
| 18 | Mar 28, 2026 14:58 | 4,341 | 33,507,571 | 12,898,000 | 992,000 | 2,494,464 | ||
| 19 | Mar 28, 2026 14:57 | 4,341 | 38,805,288 | 12,900,000 | 992,000 | 2,490,368 | ||
| 20 | Mar 28, 2026 14:54 | 4,342 | 35,676,839 | 12,901,000 | 992,000 | 2,281,472 | ||
| 21 | Mar 28, 2026 14:55 | 4,342 | 29,711,748 | 12,903,000 | 992,000 | 2,281,472 | ||
| 22 | Mar 28, 2026 14:54 | 4,342 | 29,376,750 | 13,895,000 | 0 | 2,498,560 | ||
| 23 | Mar 28, 2026 14:58 | 4,343 | 40,808,851 | 12,904,000 | 992,000 | 2,281,472 | ||
| 24 | Mar 28, 2026 14:55 | 4,343 | 35,744,024 | 12,906,000 | 992,000 | 2,490,368 | ||
| 25 | Mar 28, 2026 14:55 | 4,343 | 32,779,106 | 12,904,000 | 992,000 | 2,502,656 | ||
| 26 | Mar 28, 2026 14:57 | 4,345 | 31,961,574 | 12,911,000 | 993,000 | 2,539,520 | ||
| 27 | Mar 28, 2026 14:57 | 4,345 | 31,260,796 | 12,910,000 | 993,000 | 2,498,560 | ||
| 28 | Mar 28, 2026 14:57 | 4,346 | 38,284,763 | 12,913,000 | 993,000 | 2,490,368 | ||
| 29 | Mar 28, 2026 14:54 | 4,346 | 36,222,545 | 12,915,000 | 993,000 | 2,502,656 | ||
| 30 | Mar 28, 2026 14:54 | 4,346 | 31,266,999 | 12,915,000 | 993,000 | 2,281,472 | ||
| 31 | Mar 28, 2026 14:55 | 4,346 | 30,265,081 | 12,913,000 | 993,000 | 2,502,656 | ||
| 32 | Mar 28, 2026 14:55 | 4,347 | 34,767,545 | 12,916,000 | 993,000 | 2,498,560 | ||
| 33 | Mar 28, 2026 14:55 | 4,347 | 42,672,169 | 13,911,000 | 0 | 2,494,464 | ||
| 34 | Mar 28, 2026 14:56 | 4,347 | 29,390,232 | 11,922,000 | 1,987,000 | 2,494,464 | ||
| 35 | Mar 28, 2026 14:55 | 4,348 | 44,531,552 | 12,919,000 | 993,000 | 2,281,472 | ||
| 36 | Mar 28, 2026 14:58 | 4,348 | 32,451,326 | 12,919,000 | 993,000 | 2,281,472 | ||
| 37 | Mar 28, 2026 14:57 | 4,348 | 29,889,448 | 12,920,000 | 993,000 | 2,498,560 | ||
| 38 | Mar 28, 2026 14:55 | 4,349 | 31,805,426 | 12,924,000 | 994,000 | 2,281,472 | ||
| 39 | Mar 28, 2026 14:57 | 4,349 | 30,928,506 | 13,917,000 | 0 | 2,494,464 | ||
| 40 | Mar 28, 2026 14:57 | 4,350 | 32,277,512 | 12,926,000 | 994,000 | 2,281,472 | ||
| 41 | Mar 28, 2026 14:56 | 4,351 | 28,416,693 | 12,929,000 | 994,000 | 2,494,464 | ||
| 42 | Mar 28, 2026 14:57 | 4,351 | 26,181,612 | 12,929,000 | 994,000 | 2,281,472 | ||
| 43 | Mar 28, 2026 14:57 | 4,352 | 38,352,758 | 12,933,000 | 994,000 | 2,486,272 | ||
| 44 | Mar 28, 2026 14:58 | 4,352 | 29,370,809 | 12,932,000 | 994,000 | 2,273,280 | ||
| 45 | Mar 28, 2026 14:58 | 4,352 | 38,544,689 | 12,931,000 | 994,000 | 2,490,368 | ||
| 46 | Mar 28, 2026 14:55 | 4,352 | 39,328,785 | 12,931,000 | 994,000 | 2,494,464 | ||
| 47 | Mar 28, 2026 14:55 | 4,353 | 25,840,245 | 11,939,000 | 1,989,000 | 2,494,464 | ||
| 48 | Mar 28, 2026 14:55 | 4,354 | 29,525,980 | 12,939,000 | 995,000 | 2,498,560 | ||
| 49 | Mar 28, 2026 14:58 | 4,354 | 28,035,414 | 12,939,000 | 995,000 | 2,281,472 | ||
| 50 | Mar 28, 2026 14:55 | 4,354 | 36,746,707 | 12,937,000 | 995,000 | 2,498,560 | ||
| 51 | Mar 28, 2026 14:57 | 4,354 | 25,887,747 | 12,939,000 | 995,000 | 2,494,464 | ||
| 52 | Mar 28, 2026 14:55 | 4,355 | 34,134,209 | 12,941,000 | 995,000 | 2,490,368 | ||
| 53 | Mar 28, 2026 14:55 | 4,357 | 35,666,779 | 12,946,000 | 995,000 | 2,281,472 | ||
| 54 | Mar 28, 2026 14:56 | 4,357 | 35,109,162 | 12,947,000 | 995,000 | 2,281,472 | ||
| 55 | Mar 28, 2026 14:56 | 4,357 | 35,354,250 | 11,951,000 | 1,991,000 | 2,281,472 | ||
| 56 | Mar 28, 2026 14:56 | 4,357 | 29,103,051 | 12,946,000 | 995,000 | 2,486,272 | ||
| 57 | Mar 28, 2026 14:57 | 4,358 | 30,184,901 | 11,952,000 | 1,992,000 | 2,281,472 | ||
| 58 | Mar 28, 2026 14:56 | 4,358 | 31,390,682 | 12,950,000 | 996,000 | 2,281,472 | ||
| 59 | Mar 28, 2026 14:54 | 4,358 | 30,243,063 | 12,948,000 | 996,000 | 2,486,272 | ||
| 60 | Mar 28, 2026 14:57 | 4,360 | 27,866,694 | 12,956,000 | 996,000 | 2,486,272 | ||
| 61 | Mar 28, 2026 14:55 | 4,361 | 26,487,975 | 11,963,000 | 1,993,000 | 2,486,272 | ||
| 62 | Mar 28, 2026 14:57 | 4,363 | 42,715,648 | 12,963,000 | 997,000 | 2,490,368 | ||
| 63 | Mar 28, 2026 14:58 | 4,365 | 28,359,820 | 12,972,000 | 997,000 | 2,281,472 | ||
| 64 | Mar 28, 2026 14:55 | 4,365 | 27,947,554 | 12,971,000 | 997,000 | 2,490,368 | ||
| 65 | Mar 28, 2026 14:56 | 4,367 | 31,044,011 | 11,979,000 | 1,996,000 | 2,486,272 | ||
| 66 | Mar 28, 2026 14:57 | 4,368 | 32,065,855 | 12,980,000 | 998,000 | 2,506,752 | ||
| 67 | Mar 28, 2026 14:56 | 4,368 | 31,483,442 | 11,980,000 | 1,996,000 | 2,498,560 | ||
| 68 | Mar 28, 2026 14:55 | 4,368 | 31,988,146 | 12,980,000 | 998,000 | 2,486,272 | ||
| 69 | Mar 28, 2026 14:57 | 4,370 | 48,855,632 | 12,986,000 | 998,000 | 2,281,472 | ||
| 70 | Mar 28, 2026 14:58 | 4,370 | 29,744,616 | 12,985,000 | 998,000 | 2,277,376 | ||
| 71 | Mar 28, 2026 14:57 | 4,370 | 31,132,950 | 12,986,000 | 998,000 | 2,281,472 | ||
| 72 | Mar 28, 2026 14:54 | 4,371 | 36,850,064 | 12,988,000 | 999,000 | 2,281,472 | ||
| 73 | Mar 28, 2026 14:54 | 4,372 | 39,415,139 | 11,993,000 | 1,998,000 | 2,281,472 | ||
| 74 | Mar 28, 2026 14:58 | 4,372 | 28,508,053 | 12,991,000 | 999,000 | 2,535,424 | ||
| 75 | Mar 28, 2026 14:58 | 4,376 | 28,826,176 | 13,003,000 | 1,000,000 | 2,281,472 | ||
| 76 | Mar 28, 2026 14:57 | 4,379 | 32,234,063 | 14,013,000 | 0 | 2,281,472 | ||
| 77 | Mar 28, 2026 14:57 | 4,381 | 28,208,743 | 13,018,000 | 1,001,000 | 2,281,472 | ||
| 78 | Mar 28, 2026 14:56 | 4,381 | 36,975,137 | 13,017,000 | 1,001,000 | 2,490,368 | ||
| 79 | Mar 28, 2026 14:55 | 4,388 | 32,814,504 | 12,037,000 | 2,006,000 | 2,277,376 | ||
| 80 | Mar 28, 2026 14:57 | 4,388 | 31,652,828 | 12,035,000 | 2,005,000 | 2,494,464 | ||
| 81 | Mar 28, 2026 14:56 | 4,393 | 36,274,708 | 12,048,000 | 2,008,000 | 2,486,272 | ||
| 82 | Mar 28, 2026 14:56 | 4,451 | 36,082,201 | 13,227,000 | 1,017,000 | 2,482,176 | ||
| 83 | Mar 28, 2026 14:54 | 4,515 | 25,270,342 | 14,448,000 | 0 | 2,494,464 | ||
| 84 | Mar 28, 2026 14:54 | 4,525 | 34,004,830 | 13,446,000 | 1,034,000 | 2,494,464 | ||
| 85 | Mar 28, 2026 14:56 | 4,542 | 28,948,555 | 14,534,000 | 0 | 2,494,464 | ||
| 86 | Mar 28, 2026 14:56 | 4,554 | 27,603,837 | 13,532,000 | 1,040,000 | 2,486,272 | ||
| 87 | Mar 28, 2026 14:54 | 4,606 | 39,448,541 | 13,688,000 | 1,052,000 | 2,502,656 | ||
| 88 | Mar 28, 2026 14:56 | 4,680 | 33,055,229 | 13,104,000 | 1,872,000 | 2,281,472 | ||
| 89 | Mar 28, 2026 14:56 | 4,716 | 39,702,994 | 14,086,000 | 1,006,000 | 2,482,176 | ||
| 90 | Mar 28, 2026 14:56 | 4,823 | 38,463,499 | 14,406,000 | 1,029,000 | 2,285,568 |