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: 4,470Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Dec 21, 2025 18:06	4,442	36,128,947	12,183,000	2,030,000	2,273,280
2	Dec 21, 2025 18:06	4,443	30,164,946	12,186,000	2,031,000	2,404,352
3	Dec 21, 2025 20:24	4,445	31,727,731	12,192,000	2,032,000	2,273,280
4	Dec 21, 2025 18:06	4,448	31,377,097	12,200,000	2,033,000	2,404,352
5	Dec 21, 2025 20:25	4,448	43,734,362	12,200,000	2,033,000	2,273,280
6	Dec 21, 2025 18:06	4,452	31,260,523	12,211,000	2,035,000	2,273,280
7	Dec 21, 2025 18:06	4,452	42,729,187	12,211,000	2,035,000	2,273,280
8	Dec 21, 2025 18:18	4,455	37,004,234	12,219,000	2,036,000	2,273,280
9	Dec 21, 2025 20:24	4,456	35,920,250	13,242,000	1,018,000	2,273,280
10	Dec 21, 2025 23:11	4,461	35,804,024	12,237,000	2,039,000	2,273,280
11	Dec 21, 2025 18:06	4,462	37,035,065	12,238,000	2,039,000	2,273,280
12	Dec 21, 2025 20:24	4,462	30,920,533	12,238,000	2,039,000	2,273,280
13	Dec 21, 2025 20:24	4,464	31,730,617	12,245,000	2,040,000	2,400,256
14	Dec 21, 2025 20:24	4,465	29,911,366	12,246,000	2,041,000	2,400,256
15	Dec 21, 2025 18:06	4,469	44,212,614	13,281,000	1,021,000	2,273,280
16	Dec 21, 2025 18:18	4,470	29,475,488	13,282,000	1,021,000	2,400,256
17	Dec 21, 2025 18:06	4,470	30,219,149	14,304,000	0	2,273,280
18	Dec 21, 2025 20:25	4,470	29,755,877	13,284,000	1,021,000	2,273,280
19	Dec 21, 2025 23:11	4,471	29,641,654	14,306,000	0	2,273,280
20	Dec 21, 2025 23:11	4,473	31,124,188	13,290,000	1,022,000	2,400,256
21	Dec 21, 2025 20:25	4,473	36,384,308	14,315,000	0	2,273,280
22	Dec 21, 2025 20:25	4,474	30,975,617	14,317,000	0	2,273,280
23	Dec 21, 2025 20:25	4,475	30,649,197	14,321,000	0	2,387,968
24	Dec 21, 2025 20:24	4,475	31,856,088	14,320,000	0	2,400,256
25	Dec 21, 2025 20:25	4,476	30,748,914	13,301,000	1,023,000	2,404,352
26	Dec 21, 2025 20:24	4,479	33,173,893	12,286,000	2,047,000	2,273,280
27	Dec 21, 2025 20:24	4,479	28,129,006	14,332,000	0	2,510,848
28	Dec 21, 2025 18:06	4,480	32,682,444	13,313,000	1,024,000	2,510,848
29	Dec 21, 2025 20:24	4,481	32,721,114	14,339,000	0	2,273,280
30	Dec 21, 2025 20:25	4,483	28,916,978	14,345,000	0	2,273,280
31	Dec 21, 2025 18:18	4,483	31,274,680	14,345,000	0	2,392,064
32	Dec 21, 2025 20:25	4,491	31,894,679	13,345,000	1,026,000	2,273,280
33	Dec 21, 2025 20:25	4,530	36,249,508	13,461,000	1,035,000	2,519,040

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