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 08:51 | 4,391 | 37,227,349 | 12,044,000 | 2,007,000 | 2,408,448 | ||
| 2 | Mar 28, 2026 08:42 | 4,393 | 32,824,094 | 12,051,000 | 2,008,000 | 2,285,568 | ||
| 3 | Mar 28, 2026 08:49 | 4,396 | 32,101,007 | 13,063,000 | 1,004,000 | 2,412,544 | ||
| 4 | Mar 28, 2026 08:43 | 4,397 | 37,772,108 | 12,060,000 | 2,010,000 | 2,412,544 | ||
| 5 | Mar 28, 2026 08:41 | 4,397 | 32,257,216 | 12,060,000 | 2,010,000 | 2,400,256 | ||
| 6 | Mar 28, 2026 08:50 | 4,400 | 30,140,192 | 12,068,000 | 2,011,000 | 2,412,544 | ||
| 7 | Mar 28, 2026 08:42 | 4,400 | 34,461,843 | 13,076,000 | 1,005,000 | 2,404,352 | ||
| 8 | Mar 28, 2026 08:45 | 4,401 | 26,460,261 | 12,071,000 | 2,011,000 | 2,400,256 | ||
| 9 | Mar 28, 2026 08:43 | 4,402 | 30,349,505 | 12,075,000 | 2,012,000 | 2,408,448 | ||
| 10 | Mar 28, 2026 08:50 | 4,404 | 31,097,023 | 13,088,000 | 1,006,000 | 2,285,568 | ||
| 11 | Mar 28, 2026 08:42 | 4,406 | 42,490,350 | 12,084,000 | 2,014,000 | 2,408,448 | ||
| 12 | Mar 28, 2026 08:41 | 4,406 | 30,185,573 | 13,092,000 | 1,007,000 | 2,281,472 | ||
| 13 | Mar 28, 2026 08:50 | 4,406 | 31,600,200 | 12,086,000 | 2,014,000 | 2,412,544 | ||
| 14 | Mar 28, 2026 08:41 | 4,409 | 40,505,435 | 12,094,000 | 2,015,000 | 2,285,568 | ||
| 15 | Mar 28, 2026 08:45 | 4,410 | 38,534,176 | 12,096,000 | 2,016,000 | 2,408,448 | ||
| 16 | Mar 28, 2026 08:49 | 4,411 | 29,221,446 | 12,099,000 | 2,016,000 | 2,400,256 | ||
| 17 | Mar 28, 2026 08:42 | 4,411 | 31,470,767 | 12,100,000 | 2,016,000 | 2,408,448 | ||
| 18 | Mar 28, 2026 08:49 | 4,411 | 28,662,702 | 12,098,000 | 2,016,000 | 2,285,568 | ||
| 19 | Mar 28, 2026 08:46 | 4,412 | 35,239,544 | 12,102,000 | 2,017,000 | 2,285,568 | ||
| 20 | Mar 28, 2026 08:49 | 4,413 | 29,812,461 | 12,104,000 | 2,017,000 | 2,408,448 | ||
| 21 | Mar 28, 2026 08:50 | 4,413 | 36,850,847 | 13,113,000 | 1,008,000 | 2,412,544 | ||
| 22 | Mar 28, 2026 08:42 | 4,416 | 30,837,153 | 13,121,000 | 1,009,000 | 2,412,544 | ||
| 23 | Mar 28, 2026 08:43 | 4,417 | 38,431,554 | 12,115,000 | 2,019,000 | 2,404,352 | ||
| 24 | Mar 28, 2026 08:43 | 4,417 | 31,453,928 | 13,125,000 | 1,009,000 | 2,396,160 | ||
| 25 | Mar 28, 2026 08:43 | 4,418 | 28,762,501 | 12,119,000 | 2,019,000 | 2,412,544 | ||
| 26 | Mar 28, 2026 08:50 | 4,420 | 33,465,304 | 12,124,000 | 2,020,000 | 2,404,352 | ||
| 27 | Mar 28, 2026 08:43 | 4,420 | 32,372,123 | 13,133,000 | 1,010,000 | 2,285,568 | ||
| 28 | Mar 28, 2026 08:42 | 4,420 | 30,938,269 | 12,123,000 | 2,020,000 | 2,412,544 | ||
| 29 | Mar 28, 2026 08:41 | 4,420 | 30,961,817 | 12,124,000 | 2,020,000 | 2,400,256 | ||
| 30 | Mar 28, 2026 08:45 | 4,420 | 39,213,101 | 12,124,000 | 2,020,000 | 2,285,568 | ||
| 31 | Mar 28, 2026 08:42 | 4,421 | 35,626,636 | 13,138,000 | 1,010,000 | 2,285,568 | ||
| 32 | Mar 28, 2026 08:45 | 4,423 | 29,768,952 | 13,143,000 | 1,011,000 | 2,416,640 | ||
| 33 | Mar 28, 2026 08:41 | 4,423 | 37,599,886 | 12,131,000 | 2,021,000 | 2,404,352 | ||
| 34 | Mar 28, 2026 08:42 | 4,424 | 31,826,644 | 12,136,000 | 2,022,000 | 2,408,448 | ||
| 35 | Mar 28, 2026 08:50 | 4,424 | 36,239,109 | 12,134,000 | 2,022,000 | 2,285,568 | ||
| 36 | Mar 28, 2026 08:49 | 4,425 | 33,601,475 | 12,138,000 | 2,023,000 | 2,412,544 | ||
| 37 | Mar 28, 2026 08:49 | 4,425 | 30,094,788 | 13,148,000 | 1,011,000 | 2,408,448 | ||
| 38 | Mar 28, 2026 08:50 | 4,425 | 38,561,437 | 13,149,000 | 1,011,000 | 2,404,352 | ||
| 39 | Mar 28, 2026 08:42 | 4,426 | 27,090,719 | 12,141,000 | 2,023,000 | 2,408,448 | ||
| 40 | Mar 28, 2026 08:43 | 4,427 | 33,480,441 | 13,155,000 | 1,011,000 | 2,281,472 | ||
| 41 | Mar 28, 2026 08:41 | 4,428 | 33,417,067 | 13,158,000 | 1,012,000 | 2,408,448 | ||
| 42 | Mar 28, 2026 08:49 | 4,428 | 29,743,881 | 12,146,000 | 2,024,000 | 2,408,448 | ||
| 43 | Mar 28, 2026 08:50 | 4,429 | 31,708,376 | 13,161,000 | 1,012,000 | 2,412,544 | ||
| 44 | Mar 28, 2026 08:49 | 4,429 | 40,870,133 | 12,148,000 | 2,024,000 | 2,408,448 | ||
| 45 | Mar 28, 2026 08:41 | 4,429 | 29,407,110 | 12,148,000 | 2,024,000 | 2,404,352 | ||
| 46 | Mar 28, 2026 08:50 | 4,429 | 30,988,729 | 13,162,000 | 1,012,000 | 2,285,568 | ||
| 47 | Mar 28, 2026 08:43 | 4,429 | 40,267,632 | 12,149,000 | 2,024,000 | 2,408,448 | ||
| 48 | Mar 28, 2026 08:43 | 4,431 | 30,774,163 | 12,154,000 | 2,025,000 | 2,285,568 | ||
| 49 | Mar 28, 2026 08:51 | 4,431 | 30,933,792 | 13,168,000 | 1,012,000 | 2,408,448 | ||
| 50 | Mar 28, 2026 08:50 | 4,433 | 30,316,063 | 12,161,000 | 2,026,000 | 2,416,640 | ||
| 51 | Mar 28, 2026 08:41 | 4,434 | 35,602,664 | 12,162,000 | 2,027,000 | 2,285,568 | ||
| 52 | Mar 28, 2026 08:49 | 4,434 | 42,321,565 | 12,162,000 | 2,027,000 | 2,285,568 | ||
| 53 | Mar 28, 2026 08:45 | 4,434 | 35,221,942 | 13,175,000 | 1,013,000 | 2,510,848 | ||
| 54 | Mar 28, 2026 08:50 | 4,435 | 33,473,186 | 13,179,000 | 1,013,000 | 2,285,568 | ||
| 55 | Mar 28, 2026 08:51 | 4,436 | 34,826,180 | 12,167,000 | 2,027,000 | 2,285,568 | ||
| 56 | Mar 28, 2026 08:46 | 4,436 | 30,792,982 | 12,167,000 | 2,027,000 | 2,281,472 | ||
| 57 | Mar 28, 2026 08:46 | 4,437 | 33,112,128 | 12,170,000 | 2,028,000 | 2,404,352 | ||
| 58 | Mar 28, 2026 08:45 | 4,437 | 37,318,849 | 12,170,000 | 2,028,000 | 2,277,376 | ||
| 59 | Mar 28, 2026 08:43 | 4,438 | 30,039,866 | 13,187,000 | 1,014,000 | 2,285,568 | ||
| 60 | Mar 28, 2026 08:43 | 4,440 | 31,140,415 | 13,194,000 | 1,014,000 | 2,408,448 | ||
| 61 | Mar 28, 2026 08:42 | 4,442 | 34,814,392 | 13,200,000 | 1,015,000 | 2,408,448 | ||
| 62 | Mar 28, 2026 08:41 | 4,445 | 31,406,116 | 13,208,000 | 1,016,000 | 2,285,568 | ||
| 63 | Mar 28, 2026 08:42 | 4,448 | 35,246,049 | 13,217,000 | 1,016,000 | 2,285,568 | ||
| 64 | Mar 28, 2026 08:42 | 4,449 | 34,443,441 | 12,204,000 | 2,034,000 | 2,412,544 | ||
| 65 | Mar 28, 2026 08:50 | 4,453 | 31,166,832 | 13,233,000 | 1,017,000 | 2,285,568 | ||
| 66 | Mar 28, 2026 08:43 | 4,460 | 31,347,592 | 14,272,000 | 0 | 2,404,352 | ||
| 67 | Mar 28, 2026 08:51 | 4,521 | 32,043,510 | 14,468,000 | 0 | 2,285,568 | ||
| 68 | Mar 28, 2026 08:51 | 4,523 | 29,873,783 | 13,439,000 | 1,033,000 | 2,404,352 | ||
| 69 | Mar 28, 2026 08:51 | 4,527 | 37,173,714 | 14,486,000 | 0 | 2,412,544 | ||
| 70 | Mar 28, 2026 08:51 | 4,543 | 32,096,520 | 14,538,000 | 0 | 2,285,568 | ||
| 71 | Mar 28, 2026 08:51 | 4,543 | 30,199,263 | 13,499,000 | 1,038,000 | 2,400,256 | ||
| 72 | Mar 28, 2026 08:45 | 4,552 | 34,175,783 | 14,565,000 | 0 | 2,285,568 | ||
| 73 | Mar 28, 2026 08:51 | 4,578 | 31,977,239 | 13,604,000 | 1,046,000 | 2,404,352 | ||
| 74 | Mar 28, 2026 08:51 | 4,584 | 46,813,659 | 14,670,000 | 0 | 2,285,568 | ||
| 75 | Mar 28, 2026 08:45 | 4,606 | 37,246,318 | 13,688,000 | 1,052,000 | 2,285,568 | ||
| 76 | Mar 28, 2026 08:51 | 4,684 | 31,099,884 | 13,991,000 | 999,000 | 2,412,544 | ||
| 77 | Mar 28, 2026 08:51 | 4,811 | 37,189,010 | 13,471,000 | 1,924,000 | 2,408,448 | ||
| 78 | Mar 28, 2026 08:45 | 4,980 | 44,633,577 | 13,945,000 | 1,992,000 | 2,285,568 |