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 21, 2026 03:06

Dominique GarmierScore: 150,320Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 20, 2026 19:29	149,253	504,072,797	476,612,000	999,000	2,469,888
2	Mar 20, 2026 19:29	149,276	506,222,812	476,684,000	999,000	2,359,296
3	Mar 20, 2026 23:52	149,295	502,433,274	475,746,000	1,998,000	2,285,568
4	Mar 13, 2026 16:33	149,329	506,705,951	474,855,000	2,999,000	2,285,568
5	Mar 20, 2026 23:22	149,753	515,910,853	477,209,000	2,000,000	2,281,472
6	Mar 20, 2026 21:40	149,842	508,143,345	478,494,000	1,001,000	2,285,568
7	Mar 20, 2026 15:07	149,859	510,897,844	478,550,000	999,000	2,285,568
8	Mar 20, 2026 23:52	149,884	505,519,276	477,631,000	1,998,000	2,363,392
9	Mar 20, 2026 23:00	150,115	518,832,413	479,371,000	998,000	2,281,472
10	Mar 20, 2026 22:13	150,208	509,455,071	478,666,000	1,998,000	2,285,568
11	Mar 13, 2026 16:33	150,209	504,898,964	479,669,000	999,000	2,285,568
12	Mar 20, 2026 23:52	150,229	511,888,709	479,733,000	999,000	2,359,296
13	Mar 20, 2026 19:29	150,255	510,455,580	479,817,000	999,000	2,285,568
14	Mar 20, 2026 22:13	150,271	511,500,779	478,867,000	1,999,000	2,285,568
15	Mar 20, 2026 15:07	150,287	503,084,427	479,918,000	999,000	2,281,472
16	Mar 20, 2026 17:01	150,294	505,961,151	479,943,000	999,000	2,359,296
17	Mar 20, 2026 23:22	150,320	505,985,830	481,023,000	0	2,285,568
18	Mar 20, 2026 17:01	150,321	511,101,128	480,027,000	1,000,000	2,285,568
19	Mar 20, 2026 21:40	150,329	511,296,830	480,053,000	1,000,000	2,285,568
20	Mar 21, 2026 01:06	150,330	512,295,382	479,057,000	2,000,000	2,285,568
21	Mar 21, 2026 01:06	150,335	510,331,858	479,072,000	2,000,000	2,285,568
22	Mar 20, 2026 15:07	150,345	505,271,546	481,104,000	0	2,285,568
23	Mar 21, 2026 01:06	150,348	507,286,744	479,113,000	2,000,000	2,285,568
24	Mar 13, 2026 16:33	150,415	506,711,494	481,329,000	0	2,359,296
25	Mar 20, 2026 21:40	150,443	515,814,544	479,422,000	1,997,000	2,359,296
26	Mar 20, 2026 23:22	150,445	507,459,278	480,427,000	998,000	2,281,472
27	Mar 20, 2026 22:13	150,471	510,217,980	479,509,000	1,997,000	2,285,568
28	Mar 21, 2026 03:06	150,520	513,278,973	479,673,000	1,990,000	2,281,472
29	Mar 20, 2026 17:01	150,526	505,484,196	480,685,000	999,000	2,351,104
30	Mar 20, 2026 23:00	150,583	504,920,688	479,867,000	1,999,000	2,285,568
31	Mar 21, 2026 03:06	150,812	512,494,669	479,608,000	2,991,000	2,367,488
32	Mar 20, 2026 23:00	150,912	506,678,328	481,918,000	999,000	2,371,584
33	Mar 21, 2026 03:06	151,046	521,358,072	481,353,000	1,993,000	2,281,472

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