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	1:20.1.2-0ubuntu1~24.04.2	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 listApr 11, 2026 06:25

Josu San Martin

Score: 3,071

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Apr 11, 2026 06:23	3,041	62,442,408	29,707,000	12,873,000	126,263,296
2	Apr 11, 2026 06:25	3,044	60,923,057	28,738,000	13,873,000	126,177,280
3	Apr 11, 2026 06:27	3,048	65,765,270	29,768,000	12,899,000	126,005,248
4	Apr 11, 2026 06:27	3,049	68,606,203	29,777,000	12,903,000	126,173,184
5	Apr 11, 2026 06:24	3,051	66,986,681	30,789,000	11,918,000	126,169,088
6	Apr 11, 2026 06:26	3,052	65,500,493	29,814,000	12,919,000	126,173,184
7	Apr 11, 2026 06:25	3,053	68,780,186	28,827,000	13,916,000	126,267,392
8	Apr 11, 2026 06:24	3,054	70,203,394	30,823,000	11,931,000	126,185,472
9	Apr 11, 2026 06:24	3,054	62,838,710	29,825,000	12,924,000	126,271,488
10	Apr 11, 2026 06:23	3,056	66,155,903	30,847,000	11,940,000	126,164,992
11	Apr 11, 2026 06:24	3,056	66,862,868	29,846,000	12,933,000	126,177,280
12	Apr 11, 2026 06:23	3,056	68,189,385	29,849,000	12,934,000	126,005,248
13	Apr 11, 2026 06:25	3,059	64,609,053	28,880,000	13,942,000	126,169,088
14	Apr 11, 2026 06:23	3,059	70,532,254	30,871,000	11,950,000	126,173,184
15	Apr 11, 2026 06:23	3,059	63,806,685	28,880,000	13,942,000	126,267,392
16	Apr 11, 2026 06:26	3,060	68,286,685	30,887,000	11,956,000	126,164,992
17	Apr 11, 2026 06:27	3,062	65,744,781	29,910,000	12,961,000	126,267,392
18	Apr 11, 2026 06:23	3,062	69,200,156	28,907,000	13,955,000	126,267,392
19	Apr 11, 2026 06:24	3,062	63,519,315	28,906,000	13,955,000	126,164,992
20	Apr 11, 2026 06:25	3,063	71,940,494	28,924,000	13,963,000	126,267,392
21	Apr 11, 2026 06:24	3,063	64,273,899	28,919,000	13,961,000	126,267,392
22	Apr 11, 2026 06:23	3,065	66,199,929	31,932,000	10,976,000	126,169,088
23	Apr 11, 2026 06:24	3,066	64,710,260	30,950,000	11,980,000	126,267,392
24	Apr 11, 2026 06:25	3,066	63,778,850	31,946,000	10,981,000	126,173,184
25	Apr 11, 2026 06:23	3,067	67,653,107	29,958,000	12,982,000	126,267,392
26	Apr 11, 2026 06:24	3,068	66,477,118	28,967,000	13,984,000	126,005,248
27	Apr 11, 2026 06:25	3,068	66,884,590	30,968,000	11,987,000	126,169,088
28	Apr 11, 2026 06:25	3,069	65,836,548	31,972,000	10,990,000	126,267,392
29	Apr 11, 2026 06:24	3,070	65,985,147	28,989,000	13,994,000	126,267,392
30	Apr 11, 2026 06:24	3,070	68,637,693	31,988,000	10,996,000	126,005,248
31	Apr 11, 2026 06:26	3,071	66,152,333	31,994,000	10,998,000	126,173,184
32	Apr 11, 2026 06:25	3,071	65,012,923	33,998,000	8,999,000	126,005,248
33	Apr 11, 2026 06:23	3,074	69,764,797	31,030,000	12,011,000	126,267,392
34	Apr 11, 2026 06:24	3,074	71,150,312	33,025,000	10,007,000	126,173,184
35	Apr 11, 2026 06:24	3,076	65,218,799	30,047,000	13,020,000	126,173,184
36	Apr 11, 2026 06:25	3,077	66,802,958	31,054,000	12,021,000	126,267,392
37	Apr 11, 2026 06:23	3,077	64,361,441	30,053,000	13,023,000	126,009,344
38	Apr 11, 2026 06:26	3,078	67,384,210	30,062,000	13,026,000	126,169,088
39	Apr 11, 2026 06:23	3,078	63,844,986	31,065,000	12,025,000	126,169,088
40	Apr 11, 2026 06:27	3,081	70,811,513	31,099,000	12,038,000	126,169,088
41	Apr 11, 2026 06:23	3,082	67,850,313	31,111,000	12,043,000	126,156,800
42	Apr 11, 2026 06:23	3,084	62,804,413	31,126,000	12,049,000	126,267,392
43	Apr 11, 2026 06:25	3,086	66,999,385	31,152,000	12,058,000	126,005,248
44	Apr 11, 2026 06:27	3,088	65,124,518	29,155,000	14,075,000	126,267,392
45	Apr 11, 2026 06:25	3,089	65,064,148	33,194,000	10,058,000	126,267,392
46	Apr 11, 2026 06:23	3,089	64,594,984	33,192,000	10,058,000	126,177,280
47	Apr 11, 2026 06:24	3,089	67,185,147	31,175,000	12,067,000	126,271,488
48	Apr 11, 2026 06:24	3,090	66,016,105	31,187,000	12,072,000	126,267,392
49	Apr 11, 2026 06:24	3,090	72,024,315	28,513,000	14,748,000	126,267,392
50	Apr 11, 2026 06:25	3,091	60,341,110	31,194,000	12,075,000	126,267,392
51	Apr 11, 2026 06:25	3,092	69,876,818	31,207,000	12,080,000	126,177,280
52	Apr 11, 2026 06:25	3,093	67,338,002	30,212,000	13,092,000	126,267,392
53	Apr 11, 2026 06:26	3,094	70,519,578	31,224,000	12,086,000	126,271,488
54	Apr 11, 2026 06:24	3,095	67,080,061	29,545,000	13,788,000	126,005,248
55	Apr 11, 2026 06:25	3,095	68,866,025	32,247,000	11,085,000	126,267,392
56	Apr 11, 2026 06:26	3,131	63,876,648	32,878,000	10,959,000	126,177,280
57	Apr 11, 2026 06:27	3,140	70,377,133	31,966,000	11,987,000	126,267,392
58	Apr 11, 2026 06:24	3,168	66,871,558	32,255,000	12,095,000	126,164,992
59	Apr 11, 2026 06:24	3,212	64,790,649	31,977,000	12,990,000	126,267,392
60	Apr 11, 2026 06:24	3,220	66,419,574	33,063,000	12,023,000	126,271,488
61	Apr 11, 2026 06:24	3,234	66,991,588	33,201,000	12,073,000	126,267,392
62	Apr 11, 2026 06:24	3,240	65,075,130	34,269,000	11,087,000	126,169,088
63	Apr 11, 2026 06:23	3,255	67,201,262	32,409,000	13,166,000	126,177,280

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