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 listJan 9, 2025 19:31

Ian Mckibben

Score: 6,621

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jan 9, 2025 19:27	5,991	41,459,871	18,162,000	1,009,000	2,277,376
2	Jan 9, 2025 19:27	5,992	45,082,352	17,155,000	2,018,000	2,289,664
3	Jan 9, 2025 19:27	5,998	40,083,363	17,175,000	2,020,000	2,265,088
4	Jan 9, 2025 19:27	6,006	45,875,117	17,195,000	2,023,000	2,289,664
5	Jan 9, 2025 19:35	6,017	45,657,042	17,227,000	2,026,000	2,289,664
6	Jan 11, 2025 06:38	6,018	41,429,498	18,245,000	1,013,000	2,277,376
7	Jan 9, 2025 19:35	6,018	47,024,720	18,243,000	1,013,000	2,379,776
8	Jan 9, 2025 19:27	6,024	42,936,973	17,248,000	2,029,000	2,289,664
9	Jan 11, 2025 06:38	6,033	47,526,025	17,273,000	2,032,000	2,289,664
10	Jan 9, 2025 19:27	6,038	40,925,880	17,288,000	2,033,000	2,289,664
11	Jan 9, 2025 19:27	6,045	40,484,988	18,327,000	1,018,000	2,273,280
12	Jan 11, 2025 06:38	6,049	43,310,161	17,320,000	2,037,000	2,289,664
13	Jan 9, 2025 19:27	6,060	42,162,677	17,352,000	2,041,000	2,289,664
14	Jan 9, 2025 19:35	6,076	41,841,920	17,396,000	2,046,000	2,273,280
15	Jan 9, 2025 19:27	6,084	43,656,693	18,445,000	1,024,000	2,277,376
16	Jan 9, 2025 19:24	6,605	44,579,777	19,123,000	2,012,000	2,277,376
17	Jan 9, 2025 19:24	6,621	48,103,939	19,169,000	2,017,000	2,277,376
18	Jan 9, 2025 19:24	6,622	51,284,030	19,172,000	2,018,000	2,289,664
19	Jan 9, 2025 19:24	6,635	45,418,254	20,220,000	1,011,000	2,289,664
20	Jan 9, 2025 19:24	6,644	47,476,491	19,236,000	2,024,000	2,289,664
21	Jan 9, 2025 19:24	6,663	44,560,104	19,292,000	2,030,000	2,289,664
22	Jan 9, 2025 19:24	6,681	48,886,562	21,378,000	0	2,273,280
23	Jan 9, 2025 19:24	6,685	42,963,774	19,354,000	2,037,000	2,289,664
24	Jan 9, 2025 19:24	6,694	43,983,317	19,380,000	2,040,000	2,273,280
25	Jan 9, 2025 19:31	7,169	51,530,060	20,946,000	1,994,000	2,375,680
26	Jan 9, 2025 19:31	7,208	45,946,299	21,060,000	2,005,000	2,289,664
27	Jan 9, 2025 19:31	7,225	53,101,794	21,110,000	2,010,000	2,523,136
28	Jan 9, 2025 19:30	7,332	48,206,457	22,441,000	1,020,000	2,273,280
29	Jan 9, 2025 19:30	7,353	45,760,143	22,506,000	1,023,000	2,277,376
30	Jan 9, 2025 19:30	7,382	48,338,492	22,596,000	1,027,000	2,277,376
31	Jan 9, 2025 19:31	27,043	109,604,939	85,533,000	1,006,000	2,277,376
32	Jan 9, 2025 19:31	27,043	114,082,624	85,532,000	1,006,000	2,289,664
33	Jan 9, 2025 19:31	27,062	118,869,681	85,592,000	1,006,000	2,289,664

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