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 listFeb 21, 2025 20:52

Ian Mckibben

Score: 4,486

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Aug 12, 2025 17:48	4,452	30,145,313	14,246,000	0	2,531,328
2	Aug 12, 2025 17:48	4,458	35,515,682	12,227,000	2,037,000	2,531,328
3	Aug 12, 2025 17:48	4,460	31,500,637	13,253,000	1,019,000	2,531,328
4	Aug 12, 2025 17:48	4,461	29,404,831	12,235,000	2,039,000	2,420,736
5	Aug 12, 2025 17:50	4,461	36,280,156	14,276,000	0	2,531,328
6	Feb 21, 2025 20:52	4,462	36,123,681	13,259,000	1,019,000	2,269,184
7	Aug 12, 2025 17:48	4,468	28,160,909	14,296,000	0	2,531,328
8	Aug 12, 2025 17:50	4,469	27,395,410	14,301,000	0	2,433,024
9	Aug 12, 2025 17:48	4,472	34,843,696	13,288,000	1,022,000	2,510,848
10	Feb 21, 2025 20:50	4,472	36,041,210	14,309,000	0	2,531,328
11	Aug 12, 2025 17:48	4,474	28,045,492	14,316,000	0	2,531,328
12	Feb 21, 2025 20:52	4,474	44,572,194	14,318,000	0	2,428,928
13	Feb 21, 2025 20:50	4,475	37,411,675	14,321,000	0	2,531,328
14	Aug 12, 2025 17:50	4,478	31,550,555	13,305,000	1,023,000	2,269,184
15	Aug 12, 2025 17:50	4,480	31,685,793	14,335,000	0	2,433,024
16	Feb 21, 2025 20:52	4,482	31,312,227	14,342,000	0	2,531,328
17	Feb 21, 2025 20:52	4,486	29,484,595	14,355,000	0	2,269,184
18	Aug 12, 2025 17:48	4,486	27,277,811	14,354,000	0	2,531,328
19	Aug 12, 2025 17:50	4,488	36,364,958	13,337,000	1,025,000	2,428,928
20	Aug 12, 2025 17:48	4,488	28,711,543	13,336,000	1,025,000	2,437,120
21	Feb 21, 2025 20:52	4,490	34,282,055	13,342,000	1,026,000	2,531,328
22	Feb 21, 2025 20:50	4,490	33,400,250	13,343,000	1,026,000	2,424,832
23	Feb 21, 2025 20:49	4,490	29,046,882	14,369,000	0	2,420,736
24	Feb 21, 2025 20:52	4,492	35,427,870	14,373,000	0	2,531,328
25	Feb 21, 2025 20:52	4,493	30,779,483	14,376,000	0	2,531,328
26	Feb 21, 2025 20:52	4,494	30,218,607	13,353,000	1,027,000	2,433,024
27	Aug 12, 2025 17:50	4,495	36,771,422	14,383,000	0	2,433,024
28	Feb 21, 2025 20:49	4,498	33,590,424	14,392,000	0	2,531,328
29	Feb 21, 2025 20:52	4,506	32,343,911	14,420,000	0	2,269,184
30	Feb 21, 2025 20:49	4,513	31,386,714	14,442,000	0	2,531,328
31	Feb 21, 2025 20:52	4,898	43,950,624	15,672,000	0	2,269,184
32	Feb 21, 2025 20:52	4,960	35,470,952	14,880,000	992,000	2,433,024
33	Feb 21, 2025 20:52	4,963	44,039,292	13,898,000	1,985,000	2,269,184

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