Blue color from RGB

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

Input: 150 000 000 pixels in binary RGB format on STDIN (3 bytes per pixel: R, G, B).

Output: Write only the Blue byte of each pixel to STDOUT (150 000 000 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	1:20.1.2-0ubuntu1~24.04.2	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.

Date	Author	Language	Status	Score
May 11, 2026 13:29	Victor Mercklé	CPPg++14.2.0	Success	3,265
May 11, 2026 13:27	Victor Mercklé	CPPg++14.2.0	Success	3,441
May 11, 2026 13:23	Victor Mercklé	CPPg++14.2.0	Success	3,362
May 11, 2026 13:17	Victor Mercklé	CPPg++14.2.0	Success	4,553
May 11, 2026 13:13	Victor Mercklé	CPPg++14.2.0	Success	3,579
May 11, 2026 13:11	Victor Mercklé	CPPg++14.2.0	Success	3,259+10.32 RP
May 11, 2026 13:05	Victor Mercklé	CPPg++14.2.0	Success	3,297
May 11, 2026 13:03	Victor Mercklé	CPPg++14.2.0	Success	3,270+15.82 RP
May 11, 2026 12:59	Victor Mercklé	CPPg++14.2.0	Success	3,400
May 11, 2026 12:52	Victor Mercklé	CPPg++14.2.0	Success	3,599
May 11, 2026 12:48	Victor Mercklé	CPPg++14.2.0	Success	3,485
May 11, 2026 12:46	Victor Mercklé	CPPg++14.2.0	Success	3,459
May 11, 2026 12:42	Victor Mercklé	CPPg++14.2.0	Success	3,352
May 11, 2026 12:19	Victor Mercklé	CPPg++14.2.0	Success	3,375
May 11, 2026 12:17	Victor Mercklé	CPPg++14.2.0	Success	3,491
May 11, 2026 12:13	Victor Mercklé	CPPg++14.2.0	Success	3,397
May 11, 2026 09:29	Victor Mercklé	CPPg++14.2.0	Success	3,510
May 11, 2026 09:19	Victor Mercklé	CPPg++14.2.0	Success	3,287+97.65 RP
May 11, 2026 08:16	Victor Mercklé	CPPg++14.2.0	Success	4,834
May 11, 2026 08:07	Victor Mercklé	CPPg++14.2.0	Success	3,396+68.60 RP
May 11, 2026 07:57	Victor Mercklé	CPPg++14.2.0	Success	6,021
May 11, 2026 07:44	Victor Mercklé	CPPg++14.2.0	Success	3,571
May 11, 2026 07:34	Victor Mercklé	CPPg++14.2.0	Success	3,567
May 11, 2026 07:01	Victor Mercklé	CPPg++14.2.0	Success	3,477+663.16 RP
May 11, 2026 06:24	Victor Mercklé	CPPg++14.2.0	Success	4,519+7.32 RP
May 7, 2026 06:50	Victor Mercklé	CPPg++14.2.0	Error
May 7, 2026 06:42	Victor Mercklé	CPPg++14.2.0	Success	4,534+2'089.55 RP
May 5, 2026 10:16	Victor Mercklé	CPPg++14.2.0	Error
May 5, 2026 10:09	Victor Mercklé	CPPg++14.2.0	Error
May 5, 2026 09:58	Victor Mercklé	CPPg++14.2.0	Error
May 5, 2026 09:48	Victor Mercklé	CPPg++14.2.0	Error
May 5, 2026 09:43	Victor Mercklé	CPPg++14.2.0	Error
May 5, 2026 09:33	Victor Mercklé	CPPg++14.2.0	Error
May 5, 2026 09:22	Victor Mercklé	CPPg++14.2.0	Error
May 5, 2026 09:14	Victor Mercklé	CPPg++14.2.0	Error
May 5, 2026 06:47	C	RUSTrust-1.95.0	Error
May 5, 2026 05:01	C	RUSTrust-1.95.0	Error
May 5, 2026 05:00	C	RUSTrust-1.95.0	Error
May 5, 2026 04:52	C	RUSTrust-1.95.0	Error
May 5, 2026 04:34	C	RUSTrust-1.95.0	Error
May 5, 2026 04:31	C	RUSTrust-1.95.0	Error
May 5, 2026 00:44	C	RUSTrust-1.95.0	Success	18,218+548.91 RP
May 5, 2026 00:39	C	RUSTrust-1.95.0	Error
May 5, 2026 00:34	olliecrow	ZIG0.14.0	Error
May 5, 2026 00:34	olliecrow	ZIG0.14.0	Error
May 5, 2026 00:26	C	RUSTrust-1.95.0	Error
May 5, 2026 00:24	olliecrow	CPPg++10.5.0	Error
May 4, 2026 22:42	Josu San Martin	CPPg++14.2.0	Error
May 4, 2026 22:42	Josu San Martin	CPPg++14.2.0	Error
May 4, 2026 15:46	Victor Mercklé	CPPg++13.3.0	Error
May 2, 2026 02:41	Hung T.Nguyen	CPPg++10.5.0	Error
May 1, 2026 17:33	Hung T.Nguyen	CPPg++10.5.0	Success	4,998+2'005.80 RP
May 1, 2026 14:13	Victor Mercklé	CPPg++14.2.0	Error
May 1, 2026 14:07	Victor Mercklé	CPPg++10.5.0	Error
May 1, 2026 06:43	Charles Cabergs	CPPg++13.3.0	Error
Apr 30, 2026 03:55	Charles Cabergs	CPPg++13.3.0	Error
Apr 30, 2026 01:19	Charles Cabergs	CPPg++13.3.0	Error
Apr 29, 2026 22:51	Charles Cabergs	CPPg++13.3.0	Error
Apr 29, 2026 20:09	Charles Cabergs	CPPg++13.3.0	Error
Apr 29, 2026 17:16	Charles Cabergs	CPPg++13.3.0	Error
Apr 29, 2026 14:32	Charles Cabergs	CPPg++13.3.0	Error
Apr 29, 2026 12:42	TudyM	CPPg++10.5.0	Error
Apr 29, 2026 12:40	TudyM	CPPg++10.5.0	Error
Apr 29, 2026 11:44	Charles Cabergs	CPPg++13.3.0	Error
Apr 29, 2026 09:23	Charles Cabergs	CPPg++13.3.0	Error
Apr 29, 2026 06:38	Charles Cabergs	CPPg++13.3.0	Error
Apr 29, 2026 01:23	Charles Cabergs	CPPg++13.3.0	Error
Apr 28, 2026 22:59	Charles Cabergs	CPPg++13.3.0	Error
Apr 28, 2026 20:29	Charles Cabergs	CPPg++13.3.0	Error
Apr 28, 2026 15:18	Charles Cabergs	CPPg++13.3.0	Error
Apr 28, 2026 08:48	TudyM	CPPg++10.5.0	Error
Apr 28, 2026 08:43	TudyM	CPPg++10.5.0	Error
Apr 28, 2026 08:33	TudyM	CPPg++10.5.0	Error
Apr 28, 2026 08:22	TudyM	CPPg++10.5.0	Error
Apr 28, 2026 06:55	Victor Mercklé	CPPg++14.2.0	Error
Apr 28, 2026 06:48	Victor Mercklé	CPPg++14.2.0	Error
Apr 28, 2026 00:18	Victor Mercklé	CPPg++14.2.0	Error
Apr 28, 2026 00:11	Victor Mercklé	CPPg++14.2.0	Error
Apr 28, 2026 00:04	Victor Mercklé	CPPg++14.2.0	Error
Apr 27, 2026 23:57	Victor Mercklé	CPPg++14.2.0	Error
Apr 27, 2026 23:49	Victor Mercklé	CPPg++14.2.0	Success	86,201+116.01 RP
Apr 27, 2026 23:42	Victor Mercklé	CPPg++14.2.0	Error
Apr 27, 2026 20:57	Charles Cabergs	CPPg++13.3.0	Error
Apr 27, 2026 16:04	Charles Cabergs	CPPg++13.3.0	Error
Apr 27, 2026 12:20	Charles Cabergs	CPPg++13.3.0	Error
Apr 27, 2026 08:36	Charles Cabergs	CPPg++13.3.0	Error
Apr 27, 2026 05:52	Charles Cabergs	CPPg++13.3.0	Error
Apr 27, 2026 00:29	Charles Cabergs	CPPg++13.3.0	Error
Apr 26, 2026 21:54	Charles Cabergs	CPPg++13.3.0	Error
Apr 26, 2026 20:14	TudyM	CPPg++14.2.0	Error
Apr 26, 2026 20:13	TudyM	CPPclang++20.1.2	Error
Apr 26, 2026 19:44	Charles Cabergs	CPPg++13.3.0	Error
Apr 26, 2026 18:48	TudyM	CPPg++10.5.0	Error
Apr 26, 2026 18:47	TudyM	CPPg++10.5.0	Error
Apr 26, 2026 17:00	TudyM	CPPg++10.5.0	Success	8,444+1'184.27 RP
Apr 26, 2026 02:26	Charles Cabergs	CPPclang++18.1.3	Success	5,666
Apr 24, 2026 23:39	Charles Cabergs	CPPg++13.3.0	Success	5,612
Apr 23, 2026 21:47	Charles Cabergs	CPPg++13.3.0	Success	5,589
Apr 23, 2026 05:01	Charles Cabergs	CPPg++13.3.0	Success	5,631
Apr 23, 2026 03:15	Charles Cabergs	CPPg++13.3.0	Success	5,627

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