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 listDec 31, 2025 14:02

Josu San MartinScore: 4,549Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Dec 31, 2025 14:02	4,526	37,716,015	13,449,000	1,034,000	2,404,352
2	Dec 31, 2025 14:05	4,527	37,993,884	13,451,000	1,034,000	2,392,064
3	Dec 31, 2025 14:01	4,533	32,795,962	14,504,000	0	2,404,352
4	Dec 31, 2025 14:07	4,533	34,745,666	13,469,000	1,036,000	2,281,472
5	Dec 31, 2025 14:06	4,533	33,883,174	14,506,000	0	2,404,352
6	Dec 31, 2025 14:05	4,533	34,690,723	13,469,000	1,036,000	2,281,472
7	Dec 31, 2025 14:04	4,533	35,834,723	13,468,000	1,036,000	2,400,256
8	Dec 31, 2025 14:04	4,539	28,633,647	14,525,000	0	2,281,472
9	Dec 31, 2025 14:06	4,540	30,739,965	14,528,000	0	2,277,376
10	Dec 31, 2025 14:04	4,540	31,556,051	14,528,000	0	2,281,472
11	Dec 31, 2025 14:04	4,541	28,903,681	14,532,000	0	2,408,448
12	Dec 31, 2025 14:05	4,542	28,314,891	13,497,000	1,038,000	2,281,472
13	Dec 31, 2025 14:07	4,544	41,440,280	14,542,000	0	2,404,352
14	Dec 31, 2025 14:01	4,546	35,298,345	13,509,000	1,039,000	2,400,256
15	Dec 31, 2025 14:05	4,546	35,906,280	13,507,000	1,039,000	2,281,472
16	Dec 31, 2025 14:05	4,546	33,924,564	13,507,000	1,039,000	2,404,352
17	Dec 31, 2025 14:03	4,546	30,474,814	14,546,000	0	2,281,472
18	Dec 31, 2025 14:04	4,547	31,029,677	14,549,000	0	2,281,472
19	Dec 31, 2025 14:04	4,549	30,341,702	14,558,000	0	2,400,256
20	Dec 31, 2025 14:03	4,549	30,025,521	14,556,000	0	2,277,376
21	Dec 31, 2025 14:06	4,549	33,519,400	13,518,000	1,039,000	2,400,256
22	Dec 31, 2025 14:04	4,550	39,416,709	14,559,000	0	2,408,448
23	Dec 31, 2025 14:07	4,551	30,012,330	14,562,000	0	2,277,376
24	Dec 31, 2025 14:04	4,552	31,254,247	13,526,000	1,040,000	2,400,256
25	Dec 31, 2025 14:07	4,552	31,300,588	13,526,000	1,040,000	2,281,472
26	Dec 31, 2025 14:07	4,555	32,624,363	13,534,000	1,041,000	2,396,160
27	Dec 31, 2025 14:07	4,557	30,270,348	13,541,000	1,041,000	2,400,256
28	Dec 31, 2025 14:05	4,558	39,349,609	13,543,000	1,041,000	2,408,448
29	Dec 31, 2025 14:01	4,559	34,310,377	13,546,000	1,042,000	2,281,472
30	Dec 31, 2025 14:03	4,561	28,234,658	13,553,000	1,042,000	2,404,352
31	Dec 31, 2025 14:06	4,564	28,723,036	14,606,000	0	2,277,376
32	Dec 31, 2025 14:04	4,564	31,901,588	14,606,000	0	2,396,160
33	Dec 31, 2025 14:07	4,565	30,479,374	14,609,000	0	2,400,256
34	Dec 31, 2025 14:06	4,566	32,007,154	14,611,000	0	2,396,160
35	Dec 31, 2025 14:07	4,568	46,444,900	14,617,000	0	2,400,256
36	Dec 31, 2025 14:02	4,569	41,449,028	13,578,000	1,044,000	2,404,352
37	Dec 31, 2025 14:06	4,572	29,069,098	14,629,000	0	2,281,472
38	Dec 31, 2025 14:02	4,573	39,751,090	14,634,000	0	2,281,472
39	Dec 31, 2025 14:07	4,575	40,926,600	13,594,000	1,045,000	2,281,472

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