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.

Restrictions:30s512Mb 1 Score Packages

Feel free to create an issue if you need an extra library from the standard Ubuntu repository.

Name	Version	Description
libc6-dev	2.39-0ubuntu8.7	GNU C Library: Development Libraries and Header Files Contains the symlinks, headers, and object files needed to compile and link programs which use the standard C library.
libclang-common-14-dev	1:14.0.6-19build4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-15-dev	1:15.0.7-14build3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-16-dev	1:16.0.6-23ubuntu4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-17-dev	1:17.0.6-9ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-18-dev	1:18.1.3-1ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-19-dev	1:19.1.1-1ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-20-dev	1:20.1.2-0ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libcrypt-dev	1:4.4.36-4build1	libcrypt development files This package contains the files needed for developing applications that use libcrypt.
libgcc-10-dev	10.5.0-4ubuntu2.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-11-dev	11.5.0-1ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-12-dev	12.4.0-2ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-13-dev	13.3.0-6ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-14-dev	14.2.0-4ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libobjc-13-dev	13.3.0-6ubuntu2~24.04.1	Runtime library for GNU Objective-C applications (development files) This package contains the headers and static library files needed to build GNU ObjC applications.
libssl-dev	3.0.13-0ubuntu3.9	Secure Sockets Layer toolkit - development files This package is part of the OpenSSL project's implementation of the SSL and TLS cryptographic protocols for secure communication over the Internet. . It contains development libraries, header files, and manpages for libssl and libcrypto.
libstdc++-10-dev	10.5.0-4ubuntu2.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-11-dev	11.5.0-1ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-12-dev	12.4.0-2ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-13-dev	13.3.0-6ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-14-dev	14.2.0-4ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libtbb-dev	2021.11.0-2ubuntu2	parallelism library for C++ - development files TBB is a library that helps you leverage multi-core processor performance without having to be a threading expert. It represents a higher-level, task-based parallelism that abstracts platform details and threading mechanism for performance and scalability. . (Note: if you are a user of the i386 architecture, i.e., 32-bit Intel or compatible hardware, this package only supports Pentium4-compatible and higher processors.) . This package includes the TBB development files.

Back to listMar 28, 2026 16:57

olliecrowScore: 4,352Success

Source Code

Source code access is restricted. Log in to request access.

Challenge History

No challenges yet.

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 28, 2026 16:56	4,334	30,145,149	11,888,000	1,981,000	2,494,464
2	Mar 28, 2026 16:57	4,334	27,132,171	12,880,000	990,000	2,281,472
3	Mar 28, 2026 16:57	4,334	43,270,544	12,880,000	990,000	2,486,272
4	Mar 28, 2026 17:00	4,334	28,152,947	13,870,000	0	2,281,472
5	Mar 28, 2026 16:58	4,335	36,234,582	12,882,000	990,000	2,494,464
6	Mar 28, 2026 17:00	4,336	46,275,280	12,885,000	991,000	2,502,656
7	Mar 28, 2026 16:57	4,336	34,270,732	12,883,000	991,000	2,490,368
8	Mar 28, 2026 16:57	4,337	30,482,599	12,887,000	991,000	2,486,272
9	Mar 28, 2026 17:00	4,337	29,085,397	13,879,000	0	2,498,560
10	Mar 28, 2026 16:59	4,338	27,321,143	12,891,000	991,000	2,490,368
11	Mar 28, 2026 16:59	4,338	36,577,269	12,891,000	991,000	2,494,464
12	Mar 28, 2026 16:59	4,339	40,667,002	12,893,000	991,000	2,486,272
13	Mar 28, 2026 16:59	4,339	27,114,120	12,895,000	991,000	2,539,520
14	Mar 28, 2026 16:56	4,339	36,133,371	12,895,000	991,000	2,494,464
15	Mar 28, 2026 16:57	4,340	30,070,530	12,897,000	992,000	2,494,464
16	Mar 28, 2026 16:58	4,340	42,560,944	12,897,000	992,000	2,490,368
17	Mar 28, 2026 16:57	4,341	23,996,451	12,898,000	992,000	2,281,472
18	Mar 28, 2026 17:00	4,341	35,722,426	11,907,000	1,984,000	2,494,464
19	Mar 28, 2026 16:57	4,342	26,857,211	12,903,000	992,000	2,498,560
20	Mar 28, 2026 16:57	4,342	29,481,302	12,903,000	992,000	2,498,560
21	Mar 28, 2026 16:57	4,342	32,814,089	12,903,000	992,000	2,494,464
22	Mar 28, 2026 16:57	4,342	31,251,820	12,902,000	992,000	2,494,464
23	Mar 28, 2026 16:57	4,342	37,530,609	13,893,000	0	2,498,560
24	Mar 28, 2026 16:58	4,343	32,081,798	12,904,000	992,000	2,281,472
25	Mar 28, 2026 16:59	4,343	29,885,547	12,904,000	992,000	2,494,464
26	Mar 28, 2026 16:58	4,345	37,482,438	12,912,000	993,000	2,281,472
27	Mar 28, 2026 17:00	4,345	44,269,418	12,911,000	993,000	2,490,368
28	Mar 28, 2026 16:57	4,345	39,124,381	12,911,000	993,000	2,490,368
29	Mar 28, 2026 16:59	4,346	32,692,356	13,908,000	0	2,498,560
30	Mar 28, 2026 16:58	4,346	27,522,363	11,920,000	1,986,000	2,490,368
31	Mar 28, 2026 16:59	4,347	34,437,933	12,918,000	993,000	2,494,464
32	Mar 28, 2026 16:56	4,347	29,931,386	12,916,000	993,000	2,502,656
33	Mar 28, 2026 16:57	4,347	34,306,582	12,916,000	993,000	2,490,368
34	Mar 28, 2026 16:58	4,347	36,938,036	12,917,000	993,000	2,281,472
35	Mar 28, 2026 17:00	4,348	33,885,218	13,913,000	0	2,281,472
36	Mar 28, 2026 16:58	4,348	38,653,653	12,921,000	993,000	2,486,272
37	Mar 28, 2026 17:00	4,349	27,829,206	12,922,000	994,000	2,277,376
38	Mar 28, 2026 16:59	4,349	27,714,325	13,918,000	0	2,502,656
39	Mar 28, 2026 16:58	4,349	40,255,067	11,930,000	1,988,000	2,273,280
40	Mar 28, 2026 16:58	4,349	27,134,944	12,924,000	994,000	2,494,464
41	Mar 28, 2026 17:00	4,349	30,109,127	12,924,000	994,000	2,502,656
42	Mar 28, 2026 16:56	4,350	31,881,597	12,927,000	994,000	2,494,464
43	Mar 28, 2026 16:57	4,351	43,894,434	12,928,000	994,000	2,494,464
44	Mar 28, 2026 16:58	4,351	31,030,543	13,924,000	0	2,494,464
45	Mar 28, 2026 16:58	4,351	28,899,159	12,930,000	994,000	2,498,560
46	Mar 28, 2026 16:58	4,352	28,483,335	12,932,000	994,000	2,486,272
47	Mar 28, 2026 16:59	4,352	34,802,467	12,932,000	994,000	2,281,472
48	Mar 28, 2026 16:57	4,353	35,767,061	11,941,000	1,990,000	2,281,472
49	Mar 28, 2026 16:58	4,353	27,146,655	12,936,000	995,000	2,281,472
50	Mar 28, 2026 16:56	4,353	29,621,067	11,940,000	1,990,000	2,494,464
51	Mar 28, 2026 16:58	4,355	34,804,520	12,941,000	995,000	2,281,472
52	Mar 28, 2026 16:58	4,355	32,816,451	12,940,000	995,000	2,281,472
53	Mar 28, 2026 17:00	4,355	30,531,919	12,941,000	995,000	2,277,376
54	Mar 28, 2026 17:00	4,355	31,945,435	12,940,000	995,000	2,498,560
55	Mar 28, 2026 16:59	4,356	31,434,621	12,943,000	995,000	2,494,464
56	Mar 28, 2026 16:58	4,356	33,896,339	12,945,000	995,000	2,486,272
57	Mar 28, 2026 16:57	4,357	27,729,119	12,946,000	995,000	2,498,560
58	Mar 28, 2026 17:00	4,357	29,114,122	12,946,000	995,000	2,281,472
59	Mar 28, 2026 17:00	4,358	37,832,534	12,951,000	996,000	2,281,472
60	Mar 28, 2026 17:00	4,358	31,399,824	12,951,000	996,000	2,281,472
61	Mar 28, 2026 16:56	4,358	29,397,971	11,952,000	1,992,000	2,535,424
62	Mar 28, 2026 16:57	4,358	28,195,181	11,954,000	1,992,000	2,281,472
63	Mar 28, 2026 16:58	4,359	33,353,250	11,957,000	1,992,000	2,494,464
64	Mar 28, 2026 16:59	4,359	31,773,064	12,952,000	996,000	2,486,272
65	Mar 28, 2026 17:00	4,360	27,067,638	12,957,000	996,000	2,281,472
66	Mar 28, 2026 16:59	4,360	38,285,120	12,955,000	996,000	2,494,464
67	Mar 28, 2026 16:59	4,361	36,925,168	12,960,000	996,000	2,490,368
68	Mar 28, 2026 17:00	4,361	32,884,278	11,961,000	1,993,000	2,494,464
69	Mar 28, 2026 16:59	4,361	30,002,514	12,959,000	996,000	2,281,472
70	Mar 28, 2026 16:59	4,362	31,664,494	11,965,000	1,994,000	2,285,568
71	Mar 28, 2026 16:57	4,362	37,910,345	12,962,000	997,000	2,281,472
72	Mar 28, 2026 16:57	4,363	30,466,624	12,964,000	997,000	2,281,472
73	Mar 28, 2026 16:59	4,363	38,680,297	12,965,000	997,000	2,494,464
74	Mar 28, 2026 16:58	4,364	31,799,017	11,970,000	1,995,000	2,281,472
75	Mar 28, 2026 16:56	4,365	28,221,784	11,973,000	1,995,000	2,281,472
76	Mar 28, 2026 16:59	4,367	30,051,878	12,976,000	998,000	2,490,368
77	Mar 28, 2026 17:00	4,367	32,413,335	11,977,000	1,996,000	2,486,272
78	Mar 28, 2026 16:59	4,367	30,505,049	11,978,000	1,996,000	2,482,176
79	Mar 28, 2026 16:58	4,368	33,322,935	11,981,000	1,996,000	2,498,560
80	Mar 28, 2026 17:00	4,369	41,815,511	12,984,000	998,000	2,281,472
81	Mar 28, 2026 16:58	4,369	29,385,977	12,983,000	998,000	2,281,472
82	Mar 28, 2026 16:57	4,370	34,052,890	11,987,000	1,997,000	2,281,472
83	Mar 28, 2026 16:59	4,370	25,870,469	11,986,000	1,997,000	2,535,424
84	Mar 28, 2026 16:56	4,371	35,574,723	12,988,000	999,000	2,281,472
85	Mar 28, 2026 16:56	4,374	30,727,598	12,997,000	999,000	2,281,472
86	Mar 28, 2026 16:58	4,375	31,575,158	12,000,000	2,000,000	2,281,472
87	Mar 28, 2026 16:59	4,378	34,000,815	13,009,000	1,000,000	2,281,472
88	Mar 28, 2026 16:57	4,378	26,159,441	12,007,000	2,001,000	2,281,472
89	Mar 28, 2026 16:59	4,385	30,340,428	12,027,000	2,004,000	2,281,472
90	Mar 28, 2026 17:00	4,478	38,751,424	14,328,000	0	2,281,472

Model	Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz
Cores	1