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.

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jhallgreenScore: 4,469Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Dec 21, 2025 20:26	4,433	30,108,494	12,159,000	2,026,000	2,273,280
2	Dec 22, 2025 19:31	4,433	30,578,722	12,159,000	2,026,000	2,273,280
3	Dec 21, 2025 20:26	4,434	30,086,595	13,177,000	1,013,000	2,273,280
4	Dec 21, 2025 20:26	4,434	35,394,365	13,176,000	1,013,000	2,400,256
5	Dec 21, 2025 20:26	4,443	25,664,285	13,202,000	1,015,000	2,273,280
6	Dec 21, 2025 20:26	4,444	34,671,820	12,189,000	2,031,000	2,400,256
7	Dec 22, 2025 19:31	4,446	34,668,607	13,211,000	1,016,000	2,404,352
8	Dec 22, 2025 19:31	4,449	47,938,644	13,221,000	1,017,000	2,273,280
9	Dec 22, 2025 19:31	4,449	30,283,883	12,203,000	2,033,000	2,400,256
10	Dec 21, 2025 20:26	4,454	28,200,027	13,236,000	1,018,000	2,273,280
11	Dec 21, 2025 20:26	4,455	29,418,958	12,220,000	2,036,000	2,519,040
12	Dec 21, 2025 20:26	4,456	35,646,001	13,241,000	1,018,000	2,400,256
13	Dec 21, 2025 20:26	4,456	32,684,729	12,222,000	2,037,000	2,273,280
14	Dec 21, 2025 18:08	4,457	29,713,780	12,225,000	2,037,000	2,273,280
15	Dec 22, 2025 19:31	4,457	39,049,773	12,225,000	2,037,000	2,396,160
16	Dec 21, 2025 20:27	4,458	34,663,269	13,247,000	1,019,000	2,396,160
17	Dec 21, 2025 18:08	4,461	31,013,457	13,256,000	1,019,000	2,400,256
18	Dec 21, 2025 20:26	4,463	31,801,903	14,282,000	0	2,273,280
19	Dec 22, 2025 19:31	4,464	30,034,587	12,244,000	2,040,000	2,273,280
20	Dec 22, 2025 19:31	4,468	34,737,070	12,254,000	2,042,000	2,273,280
21	Dec 21, 2025 20:27	4,468	34,924,210	12,254,000	2,042,000	2,400,256
22	Dec 21, 2025 20:27	4,469	36,579,041	13,279,000	1,021,000	2,273,280
23	Dec 21, 2025 20:26	4,469	37,121,150	13,279,000	1,021,000	2,273,280
24	Dec 21, 2025 18:08	4,473	36,495,777	13,293,000	1,022,000	2,273,280
25	Dec 21, 2025 20:26	4,474	32,614,420	13,296,000	1,022,000	2,273,280
26	Dec 22, 2025 19:31	4,474	30,331,042	14,318,000	0	2,392,064
27	Dec 21, 2025 20:27	4,475	34,244,327	13,298,000	1,022,000	2,392,064
28	Dec 21, 2025 20:27	4,476	31,527,857	14,322,000	0	2,396,160
29	Dec 21, 2025 20:27	4,477	32,522,999	13,302,000	1,023,000	2,400,256
30	Dec 22, 2025 19:31	4,477	33,194,089	14,325,000	0	2,400,256
31	Dec 21, 2025 18:07	4,477	29,223,698	13,302,000	1,023,000	2,494,464
32	Dec 21, 2025 20:26	4,478	29,969,844	13,305,000	1,023,000	2,273,280
33	Dec 21, 2025 20:26	4,478	36,590,874	14,329,000	0	2,396,160
34	Dec 21, 2025 20:26	4,478	31,595,751	13,305,000	1,023,000	2,387,968
35	Dec 21, 2025 18:07	4,478	31,499,864	13,307,000	1,023,000	2,273,280
36	Dec 21, 2025 20:26	4,481	31,679,814	13,316,000	1,024,000	2,273,280
37	Dec 21, 2025 18:07	4,487	39,674,712	12,308,000	2,051,000	2,400,256
38	Dec 21, 2025 20:26	4,489	30,261,054	12,313,000	2,052,000	2,400,256
39	Dec 21, 2025 20:26	4,489	39,625,708	14,365,000	0	2,400,256
40	Dec 21, 2025 18:07	4,493	31,898,907	13,352,000	1,027,000	2,273,280
41	Dec 21, 2025 18:07	4,501	29,286,363	13,375,000	1,028,000	2,494,464
42	Dec 21, 2025 18:07	4,582	31,770,979	13,615,000	1,047,000	2,396,160

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