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	1:20.1.2-0ubuntu1~24.04.3	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.

Date	Author	Language	Status	Score
Sep 19, 2026 06:47	Haha Expert	CPPg++12.4.0	Success	7,168+5.00 RP
Sep 18, 2026 15:00	Andrew Epstein	CPPg++14.2.0	Success	348,746
Sep 18, 2026 14:57	Andrew Epstein	CPPg++14.2.0	Error
Sep 18, 2026 14:53	Andrew Epstein	CPPg++14.2.0	Error
Sep 18, 2026 14:47	Andrew Epstein	CPPg++14.2.0	Success	82,005+5.00 RP
Sep 18, 2026 06:29	Haha Expert	CPPg++13.3.0	Success	7,044+5.00 RP
Sep 16, 2026 03:33	Andrew Epstein	RUSTrust-1.95.0	Success	2,760
Sep 16, 2026 03:27	Andrew Epstein	GOgo1.26.2	Success	2,745+17.19 RP
Sep 16, 2026 03:25	Andrew Epstein	RUSTrust-1.95.0	Success	2,755
Sep 16, 2026 03:23	Andrew Epstein	CSHARP10.0.8	Success	2,769+24.61 RP
Sep 16, 2026 03:22	Andrew Epstein	GOgo1.26.2	Success	2,757
Sep 16, 2026 03:20	Andrew Epstein	ZIG0.15.1	Success	2,752+24.92 RP
Sep 16, 2026 03:19	Andrew Epstein	RUSTrust-1.95.0	Success	2,755
Sep 16, 2026 03:18	Andrew Epstein	CPPg++14.2.0	Success	2,747+7.93 RP
Sep 16, 2026 03:15	Andrew Epstein	CPPg++14.2.0	Success	2,865
Sep 16, 2026 03:15	Andrew Epstein	CSHARP10.0.8	Success	2,788+7.70 RP
Sep 16, 2026 03:14	Andrew Epstein	GOgo1.26.2	Success	2,762
Sep 16, 2026 03:13	Andrew Epstein	CPPg++14.2.0	Success	16,390
Sep 16, 2026 03:08	Andrew Epstein	CPPg++14.2.0	Success	3,027
Sep 16, 2026 03:02	Andrew Epstein	CPPg++14.2.0	Success	12,181
Sep 16, 2026 02:58	Andrew Epstein	CPPg++14.2.0	Success	21,900
Sep 16, 2026 02:54	Andrew Epstein	CPPg++14.2.0	Success	29,868
Sep 16, 2026 01:58	Andrew Epstein	RUSTrust-1.95.0	Success	2,769
Sep 16, 2026 01:57	Andrew Epstein	RUSTrust-1.95.0	Success	2,858
Sep 16, 2026 01:55	Andrew Epstein	CSHARP10.0.8	Success	2,794
Sep 16, 2026 01:54	Andrew Epstein	GOgo1.26.2	Success	2,756
Sep 16, 2026 01:54	Andrew Epstein	ZIG0.15.1	Success	2,771
Sep 16, 2026 01:53	Andrew Epstein	RUSTrust-1.95.0	Success	2,753+11.84 RP
Sep 16, 2026 01:17	Andrew Epstein	CPPg++14.2.0	Success	2,771
Sep 16, 2026 01:17	Andrew Epstein	CPPg++14.2.0	Success	2,762+10.46 RP
Sep 16, 2026 01:16	Andrew Epstein	CPPg++14.2.0	Success	2,789
Sep 16, 2026 01:15	Andrew Epstein	CPPg++14.2.0	Success	2,777
Sep 16, 2026 01:13	Andrew Epstein	CPPg++14.2.0	Success	19,398
Sep 16, 2026 01:12	Andrew Epstein	CPPclang++20.1.2	Success	2,772
Sep 16, 2026 01:11	Andrew Epstein	CPPg++14.2.0	Success	24,494
Sep 16, 2026 01:11	Andrew Epstein	CPPg++14.2.0	Success	6,714
Sep 16, 2026 01:10	Andrew Epstein	CPPg++14.2.0	Success	2,966
Sep 16, 2026 01:06	Andrew Epstein	CPPg++14.2.0	Success	3,096
Sep 16, 2026 01:06	Andrew Epstein	CPPg++14.2.0	Success	2,841
Sep 16, 2026 01:04	Andrew Epstein	CPPg++14.2.0	Success	2,859
Sep 16, 2026 01:03	Andrew Epstein	CPPg++14.2.0	Success	13,265
Sep 16, 2026 01:02	Andrew Epstein	CPPg++14.2.0	Success	3,192
Sep 16, 2026 01:01	Andrew Epstein	CPPg++14.2.0	Success	4,366
Sep 16, 2026 01:00	Andrew Epstein	CPPg++14.2.0	Success	4,343
Sep 16, 2026 01:00	Andrew Epstein	CPPg++14.2.0	Success	3,113
Sep 16, 2026 00:56	Andrew Epstein	CPPg++14.2.0	Success	2,770+12.99 RP
Sep 16, 2026 00:54	Andrew Epstein	CPPg++14.2.0	Success	2,780+248.16 RP
Sep 16, 2026 00:53	Andrew Epstein	CPPg++14.2.0	Success	7,315
Sep 16, 2026 00:50	Andrew Epstein	CPPg++14.2.0	Success	3,319
Sep 16, 2026 00:48	Andrew Epstein	CPPg++14.2.0	Success	2,986+205.30 RP
Sep 16, 2026 00:46	Andrew Epstein	CPPg++14.2.0	Success	3,266
Sep 16, 2026 00:32	Josu San Martin	CPPg++13.3.0	Success	3,162
Sep 15, 2026 23:28	Josu San Martin	CPPg++13.3.0	Success	3,105
Sep 15, 2026 14:25	Haha Expert	CPPclang++20.1.2	Success	5,974
Sep 15, 2026 14:15	Haha Expert	CPPg++14.2.0	Success	5,799
Sep 15, 2026 14:12	Haha Expert	CPPg++14.2.0	Success	5,802
Sep 15, 2026 14:11	Haha Expert	CPPg++14.2.0	Success	5,824
Sep 15, 2026 14:10	Haha Expert	CPPg++14.2.0	Success	5,792+9.49 RP
Sep 15, 2026 14:08	Haha Expert	CPPg++14.2.0	Success	5,841
Sep 15, 2026 14:04	Haha Expert	CPPg++14.2.0	Success	5,824+284.57 RP
Sep 15, 2026 14:03	Josu San Martin	CPPg++13.3.0	Success	3,137
Sep 15, 2026 14:00	Haha Expert	CPPg++14.2.0	Success	7,045
Sep 15, 2026 13:56	Haha Expert	CPPg++14.2.0	Success	7,213
Sep 15, 2026 13:54	Haha Expert	CPPg++14.2.0	Success	7,812
Sep 15, 2026 13:51	Haha Expert	CPPg++14.2.0	Success	6,981+636.98 RP
Sep 15, 2026 13:49	Haha Expert	CPPg++14.2.0	Error
Sep 15, 2026 13:44	Haha Expert	CPPg++14.2.0	Error
Sep 10, 2026 15:26	Andrew Epstein	CPPclang++20.1.2	Success	3,233
Sep 10, 2026 15:26	Andrew Epstein	CPPg++14.2.0	Success	3,181+41.93 RP
Sep 4, 2026 10:16	Victor Mercklé	CPPg++14.2.0	Error
Sep 4, 2026 10:11	Victor Mercklé	CPPg++14.2.0	Error
Sep 4, 2026 10:03	Victor Mercklé	CPPg++14.2.0	Error
Sep 4, 2026 09:14	Victor Mercklé	CPPg++14.2.0	Error
Sep 4, 2026 09:09	Victor Mercklé	CPPg++14.2.0	Error
Sep 4, 2026 08:18	Victor Mercklé	CPPg++14.2.0	Error	+8.76 RP
Sep 4, 2026 07:43	Victor Mercklé	CPPg++14.2.0	Error
Sep 4, 2026 07:04	Victor Mercklé	CPPg++14.2.0	Error
Sep 4, 2026 06:55	Victor Mercklé	CPPg++14.2.0	Error
Aug 21, 2026 16:08	Andrew Epstein	CPPg++14.2.0	Success	3,224+16.27 RP
Aug 21, 2026 15:48	Andrew Epstein	CPPg++14.2.0	Success	3,435
Aug 21, 2026 15:39	Andrew Epstein	CPPg++14.2.0	Success	3,526
Aug 21, 2026 15:36	Andrew Epstein	CPPg++14.2.0	Success	3,522
Aug 21, 2026 15:26	Andrew Epstein	CPPg++14.2.0	Success	3,241+3'009.70 RP
Aug 21, 2026 15:15	Andrew Epstein	CPPg++14.2.0	Success	131,989+80.76 RP
Aug 18, 2026 02:29	Victor Mercklé	CPPg++14.2.0	Success	3,294
Aug 17, 2026 23:28	Victor Mercklé	CPPg++14.2.0	Error
Aug 17, 2026 17:20	Tomislav Tunkovic	CPPg++14.2.0	Success	4,238
Aug 17, 2026 17:18	Victor Mercklé	CPPg++14.2.0	Error
Aug 17, 2026 16:57	Victor Mercklé	CPPg++14.2.0	Success	2,884
Aug 17, 2026 16:34	Victor Mercklé	CPPg++14.2.0	Success	3,381
Aug 17, 2026 16:32	Tomislav Tunkovic	CPPg++14.2.0	Success	9,957
Aug 17, 2026 16:19	Tomislav Tunkovic	CPPg++14.2.0	Success	2,822
Aug 17, 2026 16:18	Victor Mercklé	CPPg++14.2.0	Error
Aug 17, 2026 16:11	Victor Mercklé	CPPg++14.2.0	Success	5,772
Aug 17, 2026 16:04	Victor Mercklé	CPPg++14.2.0	Success	5,765
Aug 17, 2026 15:54	Victor Mercklé	CPPg++14.2.0	Success	5,777
Aug 17, 2026 15:19	Victor Mercklé	CPPg++14.2.0	Success	10,408
Aug 17, 2026 15:17	Victor Mercklé	CPPg++14.2.0	Success	3,235
Aug 17, 2026 15:12	Victor Mercklé	CPPg++14.2.0	Success	3,954
Aug 17, 2026 15:06	Victor Mercklé	CPPg++14.2.0	Success	3,972

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