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.

Back to listApr 8, 2026 07:05

olliecrow

Score: 3,001

Success

Source Code

Source code access is restricted. Log in to request access.

Challenge History

Date	Challenger	Cost	Type	Status
Jul 3, 2026 07:26	Victor Mercklé	10.00	Custom	Solution Held
Jul 3, 2026 07:14	Victor Mercklé	10.00	Custom	Solution Held

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Apr 16, 2026 06:52	2,984	69,190,431	26,855,000	14,919,000	151,171,072
2	Apr 8, 2026 06:53	2,986	65,905,805	26,874,000	14,930,000	151,384,064
3	Apr 8, 2026 07:02	2,988	60,723,858	27,891,000	13,945,000	151,433,216
4	Apr 8, 2026 07:05	2,989	61,514,613	27,899,000	13,949,000	151,433,216
5	Apr 8, 2026 22:22	2,989	69,847,103	26,901,000	14,945,000	151,433,216
6	Apr 8, 2026 06:53	2,990	63,198,368	27,906,000	13,953,000	151,433,216
7	Apr 8, 2026 06:49	2,991	62,020,206	27,919,000	13,959,000	151,433,216
8	Apr 8, 2026 06:49	2,991	64,830,080	27,914,000	13,957,000	151,433,216
9	Apr 8, 2026 07:06	2,992	70,298,709	26,927,000	14,959,000	151,388,160
10	Apr 8, 2026 07:07	2,992	65,326,935	27,925,000	13,962,000	151,433,216
11	Apr 8, 2026 06:54	2,992	69,267,777	26,932,000	14,962,000	151,429,120
12	Apr 8, 2026 06:54	2,992	61,595,363	27,922,000	13,961,000	151,388,160
13	Apr 8, 2026 06:53	2,993	65,806,831	27,933,000	13,966,000	151,388,160
14	Apr 8, 2026 07:06	2,993	63,933,515	27,934,000	13,967,000	151,171,072
15	Apr 8, 2026 06:49	2,994	61,946,769	27,943,000	13,971,000	151,433,216
16	Apr 8, 2026 07:04	2,994	63,930,088	27,942,000	13,971,000	151,171,072
17	Apr 8, 2026 07:02	2,995	69,673,939	27,949,000	13,974,000	151,433,216
18	Apr 8, 2026 07:04	2,996	66,472,719	27,964,000	13,982,000	151,433,216
19	Apr 8, 2026 07:06	2,996	63,835,024	26,966,000	14,981,000	151,384,064
20	Apr 8, 2026 06:53	2,996	67,171,603	27,961,000	13,980,000	151,433,216
21	Apr 8, 2026 07:06	2,997	70,006,425	27,970,000	13,985,000	151,429,120
22	Apr 8, 2026 06:54	2,998	68,132,179	27,979,000	13,989,000	151,433,216
23	Apr 8, 2026 07:06	2,998	66,528,762	27,983,000	13,991,000	151,388,160
24	Apr 8, 2026 07:09	2,999	68,083,439	27,995,000	13,997,000	151,433,216
25	Apr 8, 2026 06:54	2,999	63,300,540	27,987,000	13,993,000	151,392,256
26	Apr 8, 2026 07:07	2,999	65,101,819	27,988,000	13,994,000	151,396,352
27	Apr 8, 2026 07:02	2,999	62,820,244	27,994,000	13,997,000	151,388,160
28	Apr 8, 2026 07:08	3,000	60,455,969	27,996,000	13,998,000	151,171,072
29	Apr 16, 2026 06:52	3,000	68,630,333	28,003,000	14,001,000	151,171,072
30	Apr 8, 2026 06:49	3,000	62,102,102	27,996,000	13,998,000	151,396,352
31	Apr 8, 2026 07:06	3,000	66,463,575	27,999,000	13,999,000	151,429,120
32	Apr 8, 2026 06:53	3,000	65,083,963	28,003,000	14,001,000	151,420,928
33	Apr 8, 2026 06:49	3,001	61,924,819	28,008,000	14,004,000	151,179,264
34	Apr 8, 2026 07:06	3,001	66,098,010	28,008,000	14,004,000	151,384,064
35	Apr 8, 2026 07:08	3,001	62,363,164	28,012,000	14,006,000	151,379,968
36	Apr 8, 2026 06:51	3,002	64,876,612	28,023,000	14,011,000	151,429,120
37	Apr 8, 2026 07:02	3,002	61,339,772	28,015,000	14,007,000	151,171,072
38	Apr 8, 2026 06:53	3,002	63,337,491	28,019,000	14,009,000	151,425,024
39	Apr 8, 2026 07:09	3,002	65,259,776	28,020,000	14,010,000	151,433,216
40	Apr 8, 2026 22:22	3,002	65,258,175	28,023,000	14,011,000	151,388,160
41	Apr 8, 2026 22:22	3,002	67,536,294	28,014,000	14,007,000	151,171,072
42	Apr 8, 2026 07:02	3,003	64,501,819	28,025,000	14,012,000	151,384,064
43	Apr 8, 2026 06:51	3,003	63,654,818	28,029,000	14,014,000	151,388,160
44	Apr 8, 2026 07:02	3,003	65,861,186	28,025,000	14,012,000	151,179,264
45	Apr 8, 2026 06:54	3,004	63,487,705	28,036,000	14,018,000	151,171,072
46	Apr 8, 2026 07:06	3,004	63,062,524	28,036,000	14,018,000	151,384,064
47	Apr 8, 2026 06:49	3,005	63,694,228	28,048,000	14,024,000	151,433,216
48	Apr 8, 2026 07:05	3,006	63,302,687	28,059,000	14,029,000	151,384,064
49	Apr 8, 2026 07:09	3,006	69,465,182	28,052,000	14,026,000	151,171,072
50	Apr 8, 2026 06:53	3,006	64,428,097	28,052,000	14,026,000	151,171,072
51	Apr 8, 2026 07:08	3,006	65,085,281	28,059,000	14,029,000	151,396,352
52	Apr 8, 2026 06:54	3,006	65,212,885	28,053,000	14,026,000	151,171,072
53	Apr 8, 2026 07:04	3,006	66,124,328	28,055,000	14,027,000	151,392,256
54	Apr 8, 2026 07:02	3,006	66,371,983	28,059,000	14,029,000	151,171,072
55	Apr 8, 2026 07:02	3,006	69,205,983	28,056,000	14,028,000	151,433,216
56	Apr 16, 2026 06:52	3,007	62,661,867	28,061,000	14,030,000	151,429,120
57	Apr 8, 2026 07:02	3,007	62,717,881	28,063,000	14,031,000	151,433,216
58	Apr 8, 2026 06:53	3,009	60,974,883	28,088,000	14,044,000	151,392,256
59	Apr 8, 2026 06:49	3,010	62,285,584	28,089,000	14,044,000	151,392,256
60	Apr 8, 2026 06:54	3,011	68,010,405	28,105,000	14,052,000	151,171,072
61	Apr 8, 2026 07:05	3,012	64,464,620	28,112,000	14,056,000	151,171,072
62	Apr 8, 2026 06:49	3,013	67,803,378	28,124,000	14,062,000	151,392,256
63	Apr 8, 2026 07:06	3,014	64,521,445	28,133,000	14,066,000	151,433,216
64	Apr 8, 2026 06:53	3,016	65,511,589	28,150,000	14,075,000	151,425,024
65	Apr 8, 2026 06:51	3,016	69,768,071	28,146,000	14,073,000	151,388,160
66	Apr 8, 2026 06:54	3,016	64,478,509	28,145,000	14,072,000	151,392,256
67	Apr 8, 2026 06:49	3,016	64,758,879	28,145,000	14,072,000	151,171,072
68	Apr 8, 2026 06:54	3,017	66,285,570	28,154,000	14,077,000	151,388,160
69	Apr 8, 2026 07:07	3,018	63,730,499	28,170,000	14,085,000	151,379,968

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