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.

#	Author	Score	Language	Solution
1	olliecrow Master	3,001	CPP g++13.3.0	Apr 8, 2026 07:05 62,363,164 ns · 28,012,000 ns · 14,006,000 ns · 151,379,968 B
2	Josu San Martin Master	3,053	CPP g++13.3.0	Apr 13, 2026 00:45 61,114,130 ns · 27,831,000 ns · 14,909,000 ns · 151,416,832 B
3	AnSa Expert	3,124	CPP g++13.3.0	Oct 29, 2025 06:33 67,215,733 ns · 28,823,000 ns · 14,908,000 ns · 151,429,120 B
4	vahook Expert	3,127	CPP g++13.3.0	Jun 2, 2025 22:47 70,607,580 ns · 28,852,000 ns · 14,923,000 ns · 151,429,120 B
5	Yuriy Lyfenko Master	3,130	CPP g++13.3.0	Apr 13, 2026 21:37 67,004,162 ns · 28,883,000 ns · 14,939,000 ns · 151,183,360 B
6	Adam Folwarczny Skilled	3,144	CPP g++13.3.0	Jun 19, 2025 20:27 64,219,416 ns · 30,009,000 ns · 14,004,000 ns · 151,429,120 B
7	Dominique Garmier Master	3,203	CPP g++13.3.0	Mar 25, 2026 01:52 74,214,902 ns · 40,854,000 ns · 3,985,000 ns · 151,171,072 B
8	limanjun99 Expert	3,203	CPP g++13.3.0	Mar 29, 2026 15:02 69,316,757 ns · 29,898,000 ns · 14,949,000 ns · 151,171,072 B
9	Aniruddha Deb Master	3,243	CPP g++13.3.0	Jun 27, 2025 22:12 65,632,612 ns · 32,288,000 ns · 13,117,000 ns · 151,326,720 B
10	Victor Mercklé Grandmaster	3,259	CPP g++14.2.0	May 11, 2026 13:11 54,546,482 ns · 31,991,000 ns · 13,643,000 ns · 151,015,424 B
11	Chandrasekaran Akash Skilled	3,273	CPP clang++18.1.3	Apr 9, 2025 02:29 65,895,877 ns · 28,889,000 ns · 16,935,000 ns · 151,396,352 B
12	Keefe Expert	3,281	CPP clang++18.1.3	May 31, 2025 15:22 77,193,124 ns · 30,957,000 ns · 14,979,000 ns · 151,420,928 B
13	Ian Mckibben Expert	3,410	CPP clang++18.1.3	Jun 22, 2025 05:26 73,493,750 ns · 31,826,000 ns · 15,913,000 ns · 151,326,720 B
14	Daniel Mastalerz Skilled	3,423	CPP g++13.3.0	Oct 31, 2025 20:30 70,601,704 ns · 36,939,000 ns · 10,982,000 ns · 151,281,664 B
15	Robert Burke Expert	3,426	CPP g++13.3.0	Dec 28, 2025 16:22 73,446,757 ns · 34,976,000 ns · 12,991,000 ns · 151,429,120 B
16	Mikhail Shirokov Skilled	3,431	CPP g++13.2.0	Jan 12, 2025 18:18 66,254,937 ns · 33,021,000 ns · 15,009,000 ns · 151,339,008 B
17	matsuoka-601 Expert	3,466	CPP g++13.3.0	Dec 31, 2025 03:08 74,940,550 ns · 32,676,000 ns · 15,843,000 ns · 151,289,856 B
18	HighloadGPT-o3-mini-high Skilled	3,475	CPP g++13.2.0	Feb 2, 2025 20:38 71,385,714 ns · 37,724,000 ns · 10,920,000 ns · 151,425,024 B
19	Aleksei Shahoika Expert	3,475	CPP g++13.3.0	Feb 20, 2026 20:46 79,741,268 ns · 34,754,000 ns · 13,901,000 ns · 151,183,360 B
20	Mikołaj Uzarski Skilled	3,476	CPP g++13.3.0	Oct 30, 2025 12:04 77,726,735 ns · 33,766,000 ns · 14,897,000 ns · 151,433,216 B
21	Yehor Bondar Skilled	3,492	CPP g++13.3.0	Dec 23, 2025 16:43 73,894,584 ns · 31,927,000 ns · 16,961,000 ns · 151,261,184 B
22	Joad Nacer Expert	3,613	CPP g++13.2.0	Dec 27, 2024 21:26 77,449,264 ns · 32,728,000 ns · 17,851,000 ns · 151,416,832 B
23	Andrey Likhachev Expert	3,712	RUST rust-1.84.1	Feb 5, 2025 17:29 75,001,901 ns · 33,981,000 ns · 17,990,000 ns · 150,183,936 B
24	wainCGP Skilled	4,360	CPP clang++18.1.3	Mar 26, 2025 12:52 86,154,907 ns · 36,026,000 ns · 25,018,000 ns · 151,175,168 B
25	ii14 Skilled	4,508	CPP clang++10.0.0	Dec 24, 2024 14:55 85,171,782 ns · 37,068,000 ns · 26,048,000 ns · 151,183,360 B
26	Hung T.Nguyen Skilled	4,998	CPP g++10.5.0	May 1, 2026 17:33 87,514,588 ns · 35,986,000 ns · 33,986,000 ns · 151,212,032 B
27	Daniel Skilled	5,236	RUST rust-1.85.0	Mar 1, 2025 16:55 104,505,231 ns · 47,198,000 ns · 26,109,000 ns · 151,183,360 B
28	Charles Cabergs Expert	5,583	CPP g++13.3.0	Apr 22, 2026 19:45 101,781,886 ns · 41,561,000 ns · 36,613,000 ns · 151,400,448 B
29	Taylor Dettling Expert	7,196	RUST rust-1.95.0	Apr 20, 2026 23:28 129,510,093 ns · 19,950,000 ns · 80,799,000 ns · 151,187,456 B
30	TudyM Expert	8,444	CPP g++10.5.0	Apr 26, 2026 17:00 137,726,366 ns · 28,809,000 ns · 89,409,000 ns · 151,228,416 B
31	Oleg Skinderev Skilled	9,715	CPP g++10.5.0	Apr 22, 2026 21:59 188,348,432 ns · 40,004,000 ns · 96,011,000 ns · 117,858,304 B
32	Divyansh Mittal Apprentice	10,741	CPP g++13.2.0	Apr 9, 2025 06:00 229,265,895 ns · 48,796,000 ns · 101,575,000 ns · 117,858,304 B
33	thatmagicalcat Skilled	10,811	RUST rust-1.87.0	Jun 15, 2025 17:35 230,039,107 ns · 43,100,000 ns · 108,253,000 ns · 117,854,208 B
34	Ben Expert	11,000	CPP clang++20.1.2	Apr 22, 2026 13:29 221,537,039 ns · 41,732,000 ns · 112,280,000 ns · 117,796,864 B
35	U Apprentice	11,402	CPP clang++18.1.3	Jun 15, 2025 17:30 186,468,422 ns · 63,848,000 ns · 95,773,000 ns · 151,171,072 B
36	HighloadGPTO1 Skilled	12,409	CPP clang++18.1.3	Dec 22, 2024 23:38 239,081,952 ns · 65,273,000 ns · 108,454,000 ns · 117,882,880 B
37	NoSIMD_C# Skilled	12,571	CSHARP 9.0.1	Jan 21, 2025 07:45 199,756,521 ns · 99,994,000 ns · 75,996,000 ns · 151,240,704 B
38	Oleg Kovalov Skilled	12,631	GO go1.23.5	Jan 29, 2025 20:34 248,706,847 ns · 53,948,000 ns · 122,882,000 ns · 117,436,416 B
39	izotoff Skilled	15,732	GO go1.15.1	Nov 7, 2025 09:32 297,745,475 ns · 115,604,000 ns · 104,642,000 ns · 111,812,608 B
40	Ahmed Hussein Novice	17,882	GO go1.24.3	May 11, 2025 01:08 329,933,878 ns · 129,150,000 ns · 121,203,000 ns · 150,097,920 B
41	C Apprentice	18,218	RUST rust-1.95.0	May 5, 2026 00:44 318,330,962 ns · 153,815,000 ns · 101,243,000 ns · 117,882,880 B
42	Kenneth Maples Expert	26,760	CPP g++9.3.0	Dec 17, 2023 07:45 3,125,154,612 ns · 374,636,014 ns · 0 ns · 266,993,664 B
43	Huy Duc Le Skilled	29,706	CPP clang++10.0.0	Mar 7, 2024 07:21 2,484,656,591 ns · 15,201,000 ns · 400,678,000 ns · 267,059,200 B
44	Elijah Kin Apprentice	29,756	CPP g++9.4.0	Jul 16, 2024 07:15 2,495,060,464 ns · 10,160,000 ns · 406,419,000 ns · 267,743,232 B
45	Viktor Iarmola Apprentice	29,813	CPP g++9.3.0	Dec 6, 2023 09:34 2,487,189,748 ns · 18,272,000 ns · 399,110,000 ns · 267,636,736 B
46	E Sequeira Skilled	30,185	CPP g++13.2.0	Nov 29, 2024 23:12 2,465,645,551 ns · 25,546,000 ns · 397,037,000 ns · 266,731,520 B
47	Hayden Donnelly Skilled	30,606	CPP clang++18.1.3	Dec 4, 2024 01:47 2,472,681,777 ns · 14,454,000 ns · 414,029,000 ns · 268,247,040 B
48	Dan Stolyarov Apprentice	32,045	CPP clang++18.1.3	Nov 13, 2024 18:12 2,495,660,716 ns · 22,741,000 ns · 425,891,000 ns · 264,138,752 B
49	gchebanov Expert	32,344	CPP clang++10.0.0	Jul 9, 2023 18:53 2,487,928,134 ns · 45,615,000 ns · 407,203,000 ns · 268,005,376 B
50	Ben Skilled	32,397	CPP g++9.4.0	Aug 1, 2024 14:08 2,475,197,897 ns · 34,192,000 ns · 419,361,000 ns · 266,178,560 B
51	Yurkov Aleksey Expert	32,433	CPP g++9.4.0	Jan 2, 2024 18:08 2,236,408,222 ns · 56,882,000 ns · 397,182,000 ns · 266,055,680 B
52	Franek Korta Skilled	35,416	CPP g++9.3.0	Jul 17, 2024 21:02 2,573,806,412 ns · 80,006,000 ns · 415,822,000 ns · 264,425,472 B
53	Liam Skilled	36,240	CPP g++9.3.0	Mar 18, 2023 20:29 2,587,935,676 ns · 78,284,000 ns · 429,076,000 ns · 267,157,504 B
54	Sergey Stremin Expert	36,264	RUST rust-1.67.1	Mar 4, 2023 11:13 2,564,873,705 ns · 76,835,000 ns · 430,861,000 ns · 267,137,024 B
55	Bernard Teo Expert	36,647	CPP g++9.3.0	Dec 2, 2023 11:09 2,521,489,617 ns · 77,920,000 ns · 435,143,000 ns · 267,194,368 B
56	Vitaliy F. Skilled	37,899	GO go1.18	Oct 6, 2023 16:10 3,277,784,279 ns · 530,582,975 ns · 0 ns · 263,053,312 B
57	dist1ll Apprentice	41,195	CPP g++9.4.0	Aug 3, 2024 19:43 2,581,925,850 ns · 576,734,837 ns · 0 ns · 265,576,448 B
58	Avinash Boddu Apprentice	42,745	CSHARP 9.0.0-preview.6	Aug 1, 2024 17:04 2,619,341,291 ns · 154,661,000 ns · 443,768,000 ns · 266,874,880 B
59	джулис Apprentice	42,927	CPP g++9.4.0	Jun 9, 2024 14:49 2,945,282,486 ns · 600,978,067 ns · 0 ns · 151,592,960 B
60	Teodor Spæren Novice	43,655	CPP g++9.4.0	Jul 2, 2024 17:06 2,260,184,085 ns · 611,170,286 ns · 0 ns · 267,440,128 B
61	Eugene Zhydzetski Skilled	46,112	GO go1.22.1	Mar 29, 2024 10:41 3,244,379,749 ns · 645,569,512 ns · 0 ns · 117,305,344 B
62	Nadiminty Kaundinya Novice	49,898	GO go1.22.5	Jul 15, 2024 17:05 3,232,761,334 ns · 698,575,168 ns · 0 ns · 117,460,992 B
63	Ilya Aniskovets Skilled	51,102	GO go1.20.7	Aug 22, 2023 18:24 4,932,428,991 ns · 715,421,028 ns · 0 ns · 115,257,344 B
64	AndreyTS Apprentice	52,277	GO go1.20.7	Aug 10, 2023 01:52 5,546,392,461 ns · 731,879,380 ns · 0 ns · 117,067,776 B
65	Iheb Skilled	53,124	CPP g++9.4.0	Jul 26, 2024 23:52 3,841,353,151 ns · 743,734,430 ns · 0 ns · 134,189,056 B
66	Martin Stensgård Skilled	55,223	CPP g++9.3.0	May 9, 2023 17:39 6,684,868,125 ns · 773,118,088 ns · 0 ns · 134,463,488 B
67	apuxbt Skilled	58,919	RUST rust-1.72.1	Sep 27, 2023 14:32 3,131,360,065 ns · 824,870,299 ns · 0 ns · 266,207,232 B
68	zypeh Apprentice	65,179	RUST rust-1.72.1	Oct 3, 2023 09:38 6,447,846,038 ns · 912,503,517 ns · 0 ns · 134,279,168 B
69	mmalczak Skilled	70,097	CPP g++9.3.0	Nov 21, 2023 11:02 5,427,925,213 ns · 77,691,000 ns · 903,673,000 ns · 266,981,376 B
70	Myles Skilled	71,014	CPP g++9.4.0	Jul 20, 2024 19:37 5,549,576,487 ns · 79,945,000 ns · 914,253,000 ns · 267,362,304 B
71	Henry Cafaro Apprentice	174,838	CPP clang++18.1.3	Sep 5, 2024 23:51 6,950,372,400 ns · 1,593,182,000 ns · 854,543,000 ns · 267,284,480 B
72	Sergey Novice	279,082	RUST rust-1.82.0	Nov 12, 2024 13:08 10,116,330,032 ns · 2,238,663,000 ns · 1,668,484,000 ns · 21,524,480 B
73	marcø Novice	361,792	CPP g++13.3.0	May 11, 2025 01:25 5,096,112,962 ns · 4,965,145,000 ns · 99,942,000 ns · 151,191,552 B
74	Pavel Ivashkov Novice	882,511	CPP g++9.4.0	Jul 30, 2024 20:12 14,297,118,466 ns · 12,355,160,246 ns · 0 ns · 266,289,152 B

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