Blue color from RGBA

Extract the Blue channel from a stream of RGBA pixels as fast as possible.

Input: 125 000 000 pixels in binary RGBA format on STDIN (4 bytes per pixel: R, G, B, A).

Output: Write only the Blue byte of each pixel to STDOUT (125 000 000 bytes total).

Restrictions:30s256Mb 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	1:20.1.2-0ubuntu1~24.04.3	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	3.0.13-0ubuntu3.11	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 16, 2026 00:01

Dominique Garmier

Score: 4,254

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 15, 2026 23:55	4,210	82,406,242	33,962,000	24,972,000	126,021,632
2	Mar 15, 2026 23:55	4,219	86,593,855	32,038,000	27,032,000	125,997,056
3	Mar 16, 2026 00:00	4,219	86,032,447	34,034,000	25,025,000	126,021,632
4	Mar 15, 2026 23:55	4,222	79,804,856	34,065,000	25,048,000	126,009,344
5	Mar 15, 2026 23:55	4,227	77,429,377	37,112,000	22,066,000	126,021,632
6	Mar 22, 2026 21:59	4,227	85,700,453	36,111,000	23,071,000	126,025,728
7	Mar 16, 2026 00:00	4,231	86,090,076	35,137,000	24,094,000	126,001,152
8	Mar 16, 2026 00:00	4,234	83,405,069	38,173,000	21,096,000	126,255,104
9	Mar 15, 2026 23:55	4,238	84,373,982	35,193,000	24,132,000	126,021,632
10	Mar 15, 2026 23:55	4,241	82,306,517	38,244,000	21,134,000	126,021,632
11	Mar 15, 2026 23:55	4,245	88,430,169	36,260,000	23,166,000	126,021,632
12	Mar 15, 2026 23:55	4,250	88,128,921	39,327,000	20,167,000	126,021,632
13	Mar 22, 2026 21:59	4,253	85,575,830	35,729,000	23,819,000	126,025,728
14	Mar 15, 2026 23:56	4,254	84,273,913	39,371,000	20,190,000	126,021,632
15	Mar 15, 2026 23:56	4,257	94,338,516	33,771,000	25,824,000	126,001,152
16	Mar 15, 2026 23:55	4,260	87,930,193	34,794,000	24,852,000	126,021,632
17	Mar 22, 2026 21:59	4,263	86,077,304	35,813,000	23,875,000	126,017,536
18	Mar 16, 2026 00:00	4,269	88,476,321	38,852,000	20,920,000	126,238,720
19	Mar 16, 2026 00:00	4,270	88,835,815	38,853,000	20,921,000	126,013,440
20	Mar 16, 2026 00:00	4,271	83,726,377	38,866,000	20,927,000	126,021,632
21	Mar 16, 2026 00:00	4,272	88,249,409	37,879,000	21,930,000	126,013,440
22	Mar 15, 2026 23:56	4,279	92,432,471	36,943,000	22,965,000	126,021,632
23	Mar 16, 2026 00:00	4,281	90,139,102	36,960,000	22,975,000	126,058,496
24	Mar 16, 2026 00:00	4,289	89,592,618	36,028,000	24,019,000	126,021,632
25	Mar 16, 2026 00:01	4,453	84,549,916	41,224,000	21,114,000	126,246,912
26	Mar 16, 2026 00:01	4,597	93,575,231	45,256,000	19,108,000	126,255,104
27	Mar 16, 2026 00:01	4,820	116,428,432	41,678,000	25,801,000	126,013,440

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