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 7, 2026 07:32

Josu San Martin

Score: 4,633

Success

Source Code

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

Challenge History

No challenges yet.

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Apr 7, 2026 07:10	4,597	89,315,589	39,218,000	25,140,000	126,033,920
2	Apr 7, 2026 07:02	4,599	92,968,699	36,650,000	27,735,000	126,033,920
3	Apr 7, 2026 07:11	4,606	90,085,512	35,716,000	28,772,000	126,025,728
4	Apr 7, 2026 06:51	4,608	92,951,202	39,699,000	24,812,000	126,033,920
5	Apr 7, 2026 07:15	4,608	90,396,576	35,733,000	28,785,000	126,156,800
6	Apr 7, 2026 07:28	4,609	87,037,069	35,740,000	28,791,000	126,025,728
7	Apr 7, 2026 07:29	4,609	89,734,369	37,725,000	26,804,000	126,160,896
8	Apr 7, 2026 07:30	4,610	91,888,054	38,322,000	26,220,000	126,160,896
9	Apr 7, 2026 06:47	4,611	90,777,224	34,759,000	29,794,000	126,156,800
10	Apr 7, 2026 06:55	4,611	87,803,751	34,761,000	29,795,000	126,160,896
11	Apr 7, 2026 07:22	4,611	95,162,067	35,755,000	28,803,000	126,025,728
12	Apr 7, 2026 06:58	4,612	88,618,540	35,758,000	28,805,000	126,148,608
13	Apr 7, 2026 07:03	4,612	92,612,436	35,758,000	28,805,000	126,033,920
14	Apr 7, 2026 07:06	4,612	95,057,279	33,774,000	30,794,000	126,164,992
15	Apr 7, 2026 06:54	4,613	86,969,044	33,780,000	30,800,000	126,271,488
16	Apr 7, 2026 07:09	4,613	95,033,628	35,770,000	28,814,000	126,271,488
17	Apr 7, 2026 07:02	4,614	85,975,287	37,766,000	26,834,000	126,017,536
18	Apr 7, 2026 07:20	4,615	88,401,311	34,791,000	29,821,000	126,033,920
19	Apr 7, 2026 07:21	4,615	88,077,712	34,791,000	29,820,000	126,271,488
20	Apr 7, 2026 07:24	4,615	90,207,853	35,781,000	28,823,000	126,156,800
21	Apr 7, 2026 06:53	4,616	90,071,381	35,790,000	28,830,000	126,025,728
22	Apr 7, 2026 06:55	4,616	84,884,147	34,801,000	29,829,000	126,025,728
23	Apr 7, 2026 06:57	4,616	89,258,837	35,788,000	28,829,000	126,160,896
24	Apr 7, 2026 07:19	4,616	90,030,650	34,800,000	29,829,000	126,025,728
25	Apr 7, 2026 07:32	4,617	85,321,293	32,813,000	31,818,000	126,025,728
26	Apr 7, 2026 07:01	4,618	86,680,178	34,815,000	29,842,000	126,156,800
27	Apr 7, 2026 07:35	4,618	92,991,555	33,814,000	30,831,000	126,025,728
28	Apr 7, 2026 06:46	4,619	85,746,909	32,827,000	31,832,000	126,263,296
29	Apr 7, 2026 06:49	4,619	92,837,462	37,808,000	26,864,000	126,160,896
30	Apr 7, 2026 07:04	4,619	93,667,456	35,812,000	28,848,000	126,164,992
31	Apr 7, 2026 07:07	4,619	89,940,707	35,815,000	28,851,000	126,029,824
32	Apr 7, 2026 07:10	4,619	89,737,134	33,824,000	30,839,000	126,029,824
33	Apr 7, 2026 07:16	4,619	86,375,716	38,395,000	26,270,000	126,025,728
34	Apr 7, 2026 06:46	4,620	89,907,407	35,819,000	28,854,000	126,156,800
35	Apr 7, 2026 06:57	4,620	88,019,956	34,830,000	29,854,000	126,025,728
36	Apr 7, 2026 07:14	4,620	83,645,040	35,824,000	28,858,000	126,152,704
37	Apr 7, 2026 07:17	4,620	84,906,883	33,831,000	30,846,000	126,025,728
38	Apr 7, 2026 07:24	4,620	91,324,298	36,820,000	27,864,000	126,152,704
39	Apr 7, 2026 07:26	4,620	85,059,722	33,830,000	30,845,000	126,160,896
40	Apr 7, 2026 07:34	4,620	87,675,933	36,380,000	28,296,000	126,029,824
41	Apr 7, 2026 07:28	4,621	89,563,937	34,836,000	29,859,000	126,033,920
42	Apr 7, 2026 07:04	4,622	85,629,609	33,847,000	30,861,000	126,152,704
43	Apr 7, 2026 07:11	4,622	91,605,218	35,835,000	28,867,000	126,033,920
44	Apr 7, 2026 06:48	4,623	90,427,982	34,853,000	29,874,000	126,160,896
45	Apr 7, 2026 06:52	4,623	90,211,981	34,848,000	29,870,000	126,160,896
46	Apr 7, 2026 07:02	4,623	86,272,774	36,845,000	27,882,000	126,025,728
47	Apr 7, 2026 07:12	4,623	91,397,168	35,844,000	28,874,000	126,029,824
48	Apr 7, 2026 07:13	4,623	89,729,499	35,843,000	28,873,000	126,025,728
49	Apr 7, 2026 07:34	4,623	86,269,283	36,841,000	27,880,000	126,033,920
50	Apr 7, 2026 06:51	4,625	89,680,086	34,864,000	29,884,000	126,025,728
51	Apr 7, 2026 06:53	4,625	89,953,451	34,868,000	29,887,000	126,025,728
52	Apr 7, 2026 06:56	4,625	89,654,259	33,871,000	30,882,000	126,152,704
53	Apr 7, 2026 07:15	4,625	90,097,835	34,866,000	29,885,000	126,025,728
54	Apr 7, 2026 07:25	4,625	87,185,539	34,865,000	29,884,000	126,156,800
55	Apr 7, 2026 07:26	4,625	89,200,765	33,868,000	30,879,000	126,033,920
56	Apr 7, 2026 07:31	4,625	89,832,599	34,868,000	29,887,000	126,164,992
57	Apr 7, 2026 07:05	4,626	85,932,189	35,867,000	28,893,000	126,164,992
58	Apr 7, 2026 07:05	4,626	88,119,544	35,870,000	28,896,000	126,160,896
59	Apr 7, 2026 07:14	4,626	83,678,208	37,863,000	26,903,000	126,029,824
60	Apr 7, 2026 06:47	4,627	85,135,796	36,870,000	27,902,000	126,271,488
61	Apr 7, 2026 07:16	4,628	89,337,577	36,883,000	27,911,000	126,156,800
62	Apr 7, 2026 07:22	4,629	85,097,651	37,884,000	26,918,000	126,033,920
63	Apr 7, 2026 07:33	4,629	87,399,641	33,900,000	30,909,000	126,160,896
64	Apr 7, 2026 06:53	4,630	86,270,965	35,903,000	28,922,000	126,033,920
65	Apr 7, 2026 07:00	4,630	89,266,800	36,895,000	27,920,000	126,033,920
66	Apr 7, 2026 07:38	4,631	85,230,416	33,910,000	30,918,000	126,148,608
67	Apr 7, 2026 06:58	4,632	92,221,545	35,917,000	28,933,000	126,029,824
68	Apr 7, 2026 07:09	4,632	88,587,803	34,921,000	29,932,000	126,029,824
69	Apr 7, 2026 06:48	4,633	89,856,760	36,925,000	27,943,000	126,025,728
70	Apr 7, 2026 07:13	4,633	91,505,671	34,928,000	29,939,000	126,251,008
71	Apr 7, 2026 07:30	4,633	88,257,754	34,922,000	29,933,000	126,271,488
72	Apr 7, 2026 06:54	4,634	87,454,066	35,929,000	28,942,000	126,164,992
73	Apr 7, 2026 07:00	4,634	89,384,046	33,933,000	30,939,000	126,156,800
74	Apr 7, 2026 07:25	4,634	86,040,718	36,929,000	27,946,000	126,271,488
75	Apr 7, 2026 06:57	4,636	92,644,046	38,946,000	25,964,000	126,029,824
76	Apr 7, 2026 07:31	4,636	88,836,050	36,947,000	27,960,000	126,164,992
77	Apr 7, 2026 07:33	4,636	86,212,477	35,944,000	28,955,000	126,029,824
78	Apr 7, 2026 07:06	4,637	87,863,724	36,952,000	27,964,000	126,070,784
79	Apr 7, 2026 07:23	4,637	88,209,399	35,957,000	28,965,000	126,033,920
80	Apr 7, 2026 07:29	4,637	93,507,281	39,949,000	24,968,000	126,271,488
81	Apr 7, 2026 07:16	4,638	85,496,886	35,961,000	28,969,000	126,025,728
82	Apr 7, 2026 07:37	4,638	96,653,492	34,961,000	29,966,000	126,242,816
83	Apr 7, 2026 07:19	4,639	90,579,412	33,973,000	30,975,000	126,025,728
84	Apr 7, 2026 07:17	4,640	86,170,276	37,979,000	26,985,000	126,025,728
85	Apr 7, 2026 07:21	4,642	89,589,738	37,991,000	26,993,000	126,152,704
86	Apr 7, 2026 07:05	4,643	85,733,993	39,002,000	26,001,000	126,160,896
87	Apr 7, 2026 07:28	4,643	90,389,058	34,999,000	29,999,000	126,152,704
88	Apr 7, 2026 07:30	4,643	87,524,867	36,003,000	29,002,000	126,160,896
89	Apr 7, 2026 06:48	4,644	84,697,202	36,005,000	29,004,000	126,156,800
90	Apr 7, 2026 07:03	4,644	88,969,022	36,011,000	29,009,000	126,025,728
91	Apr 7, 2026 07:12	4,644	87,263,728	40,009,000	25,005,000	126,033,920
92	Apr 7, 2026 07:17	4,644	90,616,668	37,006,000	28,005,000	126,009,344
93	Apr 7, 2026 06:51	4,645	90,634,296	39,021,000	26,014,000	126,033,920
94	Apr 7, 2026 07:23	4,645	87,414,519	37,013,000	28,010,000	126,033,920
95	Apr 7, 2026 07:37	4,645	88,660,030	34,014,000	31,012,000	126,017,536
96	Apr 7, 2026 07:38	4,645	90,546,957	37,020,000	28,015,000	126,160,896
97	Apr 7, 2026 06:58	4,646	85,981,966	38,027,000	27,019,000	126,156,800
98	Apr 7, 2026 07:20	4,646	88,444,516	37,026,000	28,019,000	126,271,488
99	Apr 7, 2026 07:29	4,647	85,240,566	36,031,000	29,025,000	126,160,896
100	Apr 7, 2026 06:56	4,648	87,013,329	33,036,000	32,035,000	126,025,728
101	Apr 7, 2026 07:09	4,648	85,169,639	35,040,000	30,034,000	126,164,992
102	Apr 7, 2026 07:19	4,648	90,537,028	35,039,000	30,033,000	126,160,896
103	Apr 7, 2026 07:35	4,648	85,160,848	33,038,000	32,037,000	126,164,992
104	Apr 7, 2026 06:52	4,649	85,321,489	34,043,000	31,039,000	126,152,704
105	Apr 7, 2026 06:55	4,649	87,871,626	37,047,000	28,035,000	126,025,728
106	Apr 7, 2026 07:00	4,649	86,653,844	37,048,000	28,036,000	126,152,704
107	Apr 7, 2026 07:23	4,649	88,378,247	36,050,000	29,040,000	126,271,488
108	Apr 7, 2026 06:49	4,650	90,174,041	33,048,000	32,046,000	126,148,608
109	Apr 7, 2026 07:01	4,650	93,189,601	40,063,000	25,039,000	126,164,992
110	Apr 7, 2026 07:15	4,650	88,992,601	34,055,000	31,050,000	126,029,824
111	Apr 7, 2026 07:34	4,650	91,321,130	34,054,000	31,049,000	126,025,728
112	Apr 7, 2026 07:07	4,651	88,297,632	33,061,000	32,059,000	126,029,824
113	Apr 7, 2026 06:54	4,652	90,595,198	36,072,000	29,058,000	126,029,824
114	Apr 7, 2026 07:13	4,652	95,959,699	34,064,000	31,058,000	126,156,800
115	Apr 7, 2026 06:46	4,653	87,245,237	36,078,000	29,063,000	126,025,728
116	Apr 7, 2026 07:38	4,653	91,548,585	36,082,000	29,066,000	126,025,728
117	Apr 7, 2026 07:22	4,654	93,055,741	39,096,000	26,064,000	126,025,728
118	Apr 7, 2026 07:06	4,655	84,142,202	37,093,000	28,070,000	126,164,992
119	Apr 7, 2026 07:07	4,655	83,921,132	37,098,000	28,074,000	126,152,704
120	Apr 7, 2026 07:10	4,655	86,022,402	35,090,000	30,077,000	126,033,920
121	Apr 7, 2026 07:32	4,655	93,717,969	38,101,000	27,072,000	126,009,344
122	Apr 7, 2026 06:56	4,657	90,056,911	38,119,000	27,084,000	126,017,536
123	Apr 7, 2026 07:11	4,657	86,574,813	31,094,000	34,103,000	126,029,824
124	Apr 7, 2026 07:21	4,658	96,330,970	35,110,000	30,095,000	126,160,896
125	Apr 7, 2026 07:35	4,658	87,523,521	34,112,000	31,102,000	126,169,088
126	Apr 7, 2026 07:37	4,658	93,741,533	38,123,000	27,087,000	126,156,800
127	Apr 7, 2026 07:12	4,661	91,037,106	35,135,000	30,115,000	126,017,536
128	Apr 7, 2026 07:33	4,664	85,757,507	35,159,000	30,136,000	126,017,536
129	Apr 7, 2026 07:14	4,665	87,320,872	33,155,000	32,150,000	126,160,896
130	Apr 7, 2026 07:26	4,667	85,620,868	36,186,000	29,150,000	126,160,896
131	Apr 7, 2026 06:47	4,669	95,887,430	34,661,000	30,700,000	126,263,296
132	Apr 7, 2026 07:25	4,675	90,758,775	34,233,000	31,212,000	126,017,536
133	Apr 7, 2026 07:01	4,680	84,937,341	34,745,000	30,774,000	126,156,800
134	Apr 7, 2026 07:31	4,693	85,983,166	31,855,000	33,846,000	126,160,896
135	Apr 7, 2026 07:32	4,704	86,881,689	39,910,000	25,942,000	126,160,896
136	Apr 7, 2026 06:52	4,708	90,669,290	35,951,000	29,959,000	126,025,728
137	Apr 7, 2026 06:49	4,768	94,348,608	33,871,000	32,875,000	126,152,704
138	Apr 7, 2026 07:20	4,772	92,954,168	30,911,000	35,897,000	126,017,536
139	Apr 7, 2026 07:04	4,790	88,832,787	39,038,000	28,027,000	126,164,992
140	Apr 7, 2026 07:03	4,795	85,681,152	40,685,000	26,445,000	126,152,704
141	Apr 7, 2026 07:24	4,819	95,891,186	35,243,000	32,222,000	126,017,536

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