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 19:33 | 4,332 | 28,328,111 | 12,872,000 | 990,000 | 2,498,560 | ||
| 2 | Mar 28, 2026 19:33 | 4,333 | 26,250,871 | 12,875,000 | 990,000 | 2,494,464 | ||
| 3 | Mar 28, 2026 19:33 | 4,333 | 29,629,100 | 12,876,000 | 990,000 | 2,502,656 | ||
| 4 | Mar 28, 2026 19:30 | 4,334 | 29,510,455 | 12,880,000 | 990,000 | 2,498,560 | ||
| 5 | Mar 28, 2026 19:30 | 4,334 | 41,128,633 | 12,880,000 | 990,000 | 2,498,560 | ||
| 6 | Mar 28, 2026 19:30 | 4,335 | 34,820,275 | 12,881,000 | 990,000 | 2,498,560 | ||
| 7 | Mar 28, 2026 19:32 | 4,336 | 27,628,136 | 12,884,000 | 991,000 | 2,281,472 | ||
| 8 | Mar 28, 2026 19:33 | 4,336 | 31,881,076 | 12,885,000 | 991,000 | 2,498,560 | ||
| 9 | Mar 28, 2026 19:31 | 4,337 | 33,236,069 | 12,887,000 | 991,000 | 2,502,656 | ||
| 10 | Mar 28, 2026 19:31 | 4,337 | 34,938,558 | 12,886,000 | 991,000 | 2,490,368 | ||
| 11 | Mar 28, 2026 19:30 | 4,337 | 30,686,165 | 12,888,000 | 991,000 | 2,498,560 | ||
| 12 | Mar 28, 2026 19:32 | 4,338 | 25,467,478 | 13,882,000 | 0 | 2,502,656 | ||
| 13 | Mar 28, 2026 19:32 | 4,338 | 25,930,626 | 12,892,000 | 991,000 | 2,486,272 | ||
| 14 | Mar 28, 2026 19:31 | 4,338 | 28,002,850 | 12,889,000 | 991,000 | 2,498,560 | ||
| 15 | Mar 28, 2026 19:31 | 4,338 | 29,772,196 | 12,890,000 | 991,000 | 2,281,472 | ||
| 16 | Mar 28, 2026 19:30 | 4,338 | 41,752,658 | 13,880,000 | 0 | 2,281,472 | ||
| 17 | Mar 28, 2026 19:29 | 4,338 | 31,381,783 | 13,881,000 | 0 | 2,498,560 | ||
| 18 | Mar 28, 2026 19:33 | 4,338 | 26,682,900 | 13,883,000 | 0 | 2,498,560 | ||
| 19 | Mar 28, 2026 19:31 | 4,339 | 41,539,204 | 12,894,000 | 991,000 | 2,281,472 | ||
| 20 | Mar 28, 2026 19:33 | 4,339 | 35,199,103 | 12,895,000 | 991,000 | 2,498,560 | ||
| 21 | Mar 28, 2026 19:33 | 4,340 | 28,270,419 | 12,897,000 | 992,000 | 2,494,464 | ||
| 22 | Mar 28, 2026 19:32 | 4,341 | 27,226,869 | 12,899,000 | 992,000 | 2,498,560 | ||
| 23 | Mar 28, 2026 19:32 | 4,341 | 26,878,432 | 12,899,000 | 992,000 | 2,502,656 | ||
| 24 | Mar 28, 2026 19:30 | 4,342 | 31,774,875 | 12,901,000 | 992,000 | 2,281,472 | ||
| 25 | Mar 28, 2026 19:32 | 4,342 | 30,019,437 | 12,903,000 | 992,000 | 2,498,560 | ||
| 26 | Mar 28, 2026 19:32 | 4,343 | 30,019,659 | 11,912,000 | 1,985,000 | 2,498,560 | ||
| 27 | Mar 28, 2026 19:32 | 4,343 | 36,096,018 | 12,906,000 | 992,000 | 2,281,472 | ||
| 28 | Mar 28, 2026 19:33 | 4,343 | 29,543,956 | 12,907,000 | 992,000 | 2,498,560 | ||
| 29 | Mar 28, 2026 19:31 | 4,345 | 30,643,112 | 12,912,000 | 993,000 | 2,502,656 | ||
| 30 | Mar 28, 2026 19:30 | 4,346 | 41,491,484 | 12,915,000 | 993,000 | 2,498,560 | ||
| 31 | Mar 28, 2026 19:32 | 4,346 | 29,386,460 | 12,915,000 | 993,000 | 2,281,472 | ||
| 32 | Mar 28, 2026 19:32 | 4,347 | 31,393,491 | 13,910,000 | 0 | 2,281,472 | ||
| 33 | Mar 28, 2026 19:32 | 4,348 | 27,103,788 | 11,926,000 | 1,987,000 | 2,498,560 | ||
| 34 | Mar 28, 2026 19:31 | 4,350 | 25,422,164 | 12,926,000 | 994,000 | 2,494,464 | ||
| 35 | Mar 28, 2026 19:31 | 4,350 | 40,524,672 | 12,850,000 | 1,070,000 | 2,502,656 | ||
| 36 | Mar 28, 2026 19:32 | 4,351 | 27,587,965 | 12,929,000 | 994,000 | 2,490,368 | ||
| 37 | Mar 28, 2026 19:30 | 4,351 | 30,145,118 | 12,930,000 | 994,000 | 2,281,472 | ||
| 38 | Mar 28, 2026 19:30 | 4,351 | 29,233,353 | 11,934,000 | 1,989,000 | 2,281,472 | ||
| 39 | Mar 28, 2026 19:30 | 4,352 | 37,492,815 | 12,931,000 | 994,000 | 2,281,472 | ||
| 40 | Mar 28, 2026 19:33 | 4,352 | 31,026,673 | 11,937,000 | 1,989,000 | 2,494,464 | ||
| 41 | Mar 28, 2026 19:30 | 4,352 | 35,750,122 | 12,855,000 | 1,071,000 | 2,494,464 | ||
| 42 | Mar 28, 2026 19:32 | 4,353 | 31,185,732 | 11,941,000 | 1,990,000 | 2,490,368 | ||
| 43 | Mar 28, 2026 19:30 | 4,354 | 38,110,906 | 12,938,000 | 995,000 | 2,281,472 | ||
| 44 | Mar 28, 2026 19:30 | 4,355 | 27,858,004 | 12,942,000 | 995,000 | 2,281,472 | ||
| 45 | Mar 28, 2026 19:29 | 4,359 | 39,533,422 | 12,952,000 | 996,000 | 2,281,472 | ||
| 46 | Mar 28, 2026 19:31 | 4,359 | 33,023,544 | 12,953,000 | 996,000 | 2,498,560 | ||
| 47 | Mar 28, 2026 19:30 | 4,359 | 27,210,117 | 12,954,000 | 996,000 | 2,494,464 | ||
| 48 | Mar 28, 2026 19:31 | 4,360 | 34,001,677 | 12,956,000 | 996,000 | 2,490,368 | ||
| 49 | Mar 28, 2026 19:31 | 4,361 | 31,381,614 | 12,959,000 | 996,000 | 2,281,472 | ||
| 50 | Mar 28, 2026 19:31 | 4,363 | 34,499,500 | 12,966,000 | 997,000 | 2,281,472 | ||
| 51 | Mar 28, 2026 19:30 | 4,364 | 29,752,468 | 12,969,000 | 997,000 | 2,502,656 | ||
| 52 | Mar 28, 2026 19:33 | 4,364 | 32,395,047 | 12,968,000 | 997,000 | 2,281,472 | ||
| 53 | Mar 28, 2026 19:31 | 4,364 | 31,631,478 | 12,967,000 | 997,000 | 2,502,656 | ||
| 54 | Mar 28, 2026 19:31 | 4,365 | 31,025,956 | 12,971,000 | 997,000 | 2,494,464 | ||
| 55 | Mar 28, 2026 19:32 | 4,365 | 28,253,192 | 12,972,000 | 997,000 | 2,494,464 | ||
| 56 | Mar 28, 2026 19:32 | 4,365 | 33,936,658 | 12,971,000 | 997,000 | 2,281,472 | ||
| 57 | Mar 28, 2026 19:30 | 4,367 | 34,878,141 | 12,976,000 | 998,000 | 2,494,464 | ||
| 58 | Mar 28, 2026 19:33 | 4,367 | 33,750,469 | 12,977,000 | 998,000 | 2,281,472 | ||
| 59 | Mar 28, 2026 19:30 | 4,367 | 38,702,009 | 11,979,000 | 1,996,000 | 2,494,464 | ||
| 60 | Mar 28, 2026 19:32 | 4,367 | 29,160,568 | 11,977,000 | 1,996,000 | 2,281,472 | ||
| 61 | Mar 28, 2026 19:29 | 4,368 | 29,192,277 | 11,982,000 | 1,997,000 | 2,281,472 | ||
| 62 | Mar 28, 2026 19:33 | 4,368 | 38,003,291 | 12,980,000 | 998,000 | 2,281,472 | ||
| 63 | Mar 28, 2026 19:33 | 4,369 | 31,264,999 | 12,982,000 | 998,000 | 2,281,472 | ||
| 64 | Mar 28, 2026 19:32 | 4,369 | 37,014,079 | 11,985,000 | 1,997,000 | 2,490,368 | ||
| 65 | Mar 28, 2026 19:32 | 4,369 | 29,681,145 | 11,983,000 | 1,997,000 | 2,281,472 | ||
| 66 | Mar 28, 2026 19:33 | 4,370 | 30,064,999 | 12,985,000 | 998,000 | 2,498,560 | ||
| 67 | Mar 28, 2026 19:31 | 4,371 | 31,567,687 | 11,989,000 | 1,998,000 | 2,498,560 | ||
| 68 | Mar 28, 2026 19:31 | 4,372 | 36,071,006 | 11,991,000 | 1,998,000 | 2,281,472 | ||
| 69 | Mar 28, 2026 19:30 | 4,373 | 33,719,880 | 12,994,000 | 999,000 | 2,498,560 | ||
| 70 | Mar 28, 2026 19:33 | 4,374 | 32,881,860 | 12,999,000 | 999,000 | 2,281,472 | ||
| 71 | Mar 28, 2026 19:30 | 4,374 | 31,153,206 | 11,999,000 | 1,999,000 | 2,490,368 | ||
| 72 | Mar 28, 2026 19:30 | 4,376 | 34,394,704 | 13,003,000 | 1,000,000 | 2,502,656 | ||
| 73 | Mar 28, 2026 19:31 | 4,377 | 29,879,284 | 13,006,000 | 1,000,000 | 2,281,472 | ||
| 74 | Mar 28, 2026 19:30 | 4,378 | 28,892,348 | 12,007,000 | 2,001,000 | 2,535,424 | ||
| 75 | Mar 28, 2026 19:30 | 4,378 | 26,954,132 | 12,009,000 | 2,001,000 | 2,535,424 | ||
| 76 | Mar 28, 2026 19:31 | 4,378 | 30,126,057 | 13,008,000 | 1,000,000 | 2,502,656 | ||
| 77 | Mar 28, 2026 19:30 | 4,379 | 30,020,956 | 12,012,000 | 2,002,000 | 2,281,472 | ||
| 78 | Mar 28, 2026 19:31 | 4,379 | 31,681,834 | 13,012,000 | 1,000,000 | 2,277,376 | ||
| 79 | Mar 28, 2026 19:32 | 4,379 | 36,510,026 | 12,011,000 | 2,001,000 | 2,490,368 | ||
| 80 | Mar 28, 2026 19:32 | 4,381 | 37,772,408 | 13,017,000 | 1,001,000 | 2,490,368 | ||
| 81 | Mar 28, 2026 19:32 | 4,381 | 33,803,936 | 13,018,000 | 1,001,000 | 2,498,560 | ||
| 82 | Mar 28, 2026 19:31 | 4,383 | 29,968,561 | 13,024,000 | 1,001,000 | 2,281,472 | ||
| 83 | Mar 28, 2026 19:31 | 4,383 | 29,840,381 | 12,022,000 | 2,003,000 | 2,494,464 | ||
| 84 | Mar 28, 2026 19:30 | 4,384 | 35,538,386 | 13,027,000 | 1,002,000 | 2,498,560 | ||
| 85 | Mar 28, 2026 19:32 | 4,386 | 32,800,918 | 13,034,000 | 1,002,000 | 2,281,472 | ||
| 86 | Mar 28, 2026 19:31 | 4,386 | 35,996,537 | 12,030,000 | 2,005,000 | 2,281,472 | ||
| 87 | Mar 28, 2026 19:32 | 4,387 | 41,201,261 | 13,035,000 | 1,002,000 | 2,498,560 | ||
| 88 | Mar 28, 2026 19:31 | 4,387 | 28,849,449 | 13,035,000 | 1,002,000 | 2,281,472 | ||
| 89 | Mar 28, 2026 19:31 | 4,389 | 33,584,595 | 12,039,000 | 2,006,000 | 2,498,560 | ||
| 90 | Mar 28, 2026 19:32 | 4,390 | 27,514,646 | 13,044,000 | 1,003,000 | 2,490,368 |