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.

Back to listJun 19, 2025 20:27

Adam FolwarcznyScore: 3,144Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jun 19, 2025 20:46	3,121	69,081,693	28,799,000	14,896,000	151,429,120
2	Jun 19, 2025 20:58	3,131	69,860,865	29,883,000	13,945,000	151,392,256
3	Jun 19, 2025 20:27	3,131	68,716,467	29,885,000	13,946,000	151,429,120
4	Jun 19, 2025 20:28	3,133	63,816,640	28,908,000	14,952,000	151,371,776
5	Jun 19, 2025 20:26	3,134	70,220,993	29,918,000	13,962,000	151,388,160
6	Jun 19, 2025 20:58	3,134	65,143,297	28,917,000	14,957,000	151,384,064
7	Jun 19, 2025 20:27	3,134	63,454,763	28,915,000	14,956,000	151,429,120
8	Jun 19, 2025 20:26	3,136	66,138,787	29,938,000	13,971,000	151,429,120
9	Jun 19, 2025 20:26	3,137	64,748,870	29,941,000	13,972,000	151,388,160
10	Jun 19, 2025 20:27	3,138	67,016,538	29,958,000	13,980,000	151,392,256
11	Jun 19, 2025 20:27	3,138	69,143,793	29,952,000	13,977,000	151,429,120
12	Jun 19, 2025 20:58	3,140	67,428,150	29,972,000	13,986,000	151,388,160
13	Jun 19, 2025 20:27	3,141	69,189,556	28,983,000	14,991,000	151,392,256
14	Jun 19, 2025 20:26	3,142	61,026,538	29,989,000	13,995,000	151,429,120
15	Jun 19, 2025 20:28	3,142	66,516,297	29,994,000	13,997,000	151,384,064
16	Jun 19, 2025 20:27	3,143	71,886,737	30,004,000	14,002,000	151,392,256
17	Jun 19, 2025 20:26	3,144	64,219,416	30,009,000	14,004,000	151,429,120
18	Jun 19, 2025 20:27	3,146	65,383,142	30,028,000	14,013,000	151,388,160
19	Jun 19, 2025 20:26	3,149	70,772,870	30,055,000	14,025,000	151,425,024
20	Jun 19, 2025 20:28	3,149	68,178,075	30,063,000	14,029,000	151,429,120
21	Jun 19, 2025 20:58	3,151	68,322,559	30,075,000	14,035,000	151,429,120
22	Jun 19, 2025 20:46	3,151	76,088,700	30,074,000	14,034,000	151,425,024
23	Jun 19, 2025 20:26	3,152	66,028,420	30,086,000	14,040,000	151,392,256
24	Jun 19, 2025 20:27	3,153	65,693,672	30,096,000	14,045,000	151,429,120
25	Jun 19, 2025 20:27	3,153	66,857,666	30,095,000	14,044,000	151,420,928
26	Jun 19, 2025 20:27	3,156	71,300,881	30,126,000	14,058,000	151,429,120
27	Jun 19, 2025 20:58	3,157	71,345,913	30,138,000	14,064,000	151,388,160
28	Jun 19, 2025 20:58	3,157	66,166,869	30,134,000	14,062,000	151,384,064
29	Jun 19, 2025 20:26	3,158	67,912,029	30,140,000	14,065,000	151,392,256
30	Jun 19, 2025 20:27	3,158	76,330,467	30,147,000	14,068,000	151,384,064
31	Jun 19, 2025 20:46	3,160	68,684,432	30,165,000	14,077,000	151,429,120
32	Jun 19, 2025 20:27	3,160	64,019,575	30,159,000	14,074,000	151,388,160
33	Jun 19, 2025 20:26	3,161	71,479,401	30,172,000	14,080,000	151,388,160

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