Large matrix multiplication

Multiply two square matrices as fast as possible.

Input

Two 2000 x 2000 matrices of uint32 values on STDIN, encoded back-to-back in row-major order, little-endian byte order.

Output

Write the resulting 2000 x 2000 product matrix to STDOUT in the same binary format (row-major, little-endian uint32).

Restrictions:60s256Mb 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.

Date	Author	Language	Status	Score
Sep 27, 2025 02:13	Kirill020708	CPPclang++18.1.3	Error
Sep 27, 2025 02:11	Kirill020708	CPPclang++18.1.3	Error
Sep 27, 2025 02:10	Kirill020708	CPPclang++18.1.3	Error
Sep 27, 2025 02:10	Kirill020708	CPPclang++18.1.3	Error
Sep 27, 2025 02:10	Kirill020708	CPPclang++18.1.3	Error
Sep 27, 2025 02:09	Kirill020708	CPPclang++18.1.3	Error
Sep 27, 2025 02:08	Kirill020708	CPPclang++18.1.3	Error
Sep 26, 2025 21:19	Kirill020708	CPPg++13.3.0	Success	111,963+89.32 RP
Aug 31, 2025 17:49	Yuriy Lyfenko	CPPg++13.3.0	Success	3,931
Aug 31, 2025 17:48	Yuriy Lyfenko	CPPg++13.3.0	Success	9,618
Aug 31, 2025 17:45	Yuriy Lyfenko	CPPg++13.3.0	Success	9,592
Aug 31, 2025 17:44	Yuriy Lyfenko	CPPg++13.3.0	Success	3,929+0.65 RP
Aug 31, 2025 17:42	Yuriy Lyfenko	CPPg++13.3.0	Success	3,930+7.75 RP
Aug 31, 2025 17:38	Yuriy Lyfenko	CPPclang++18.1.3	Success	4,020
Aug 31, 2025 17:33	Yuriy Lyfenko	CPPg++13.3.0	Success	4,106
Aug 31, 2025 17:31	Yuriy Lyfenko	CPPg++13.3.0	Success	3,968
Aug 31, 2025 17:26	Yuriy Lyfenko	CPPg++13.3.0	Error
Aug 31, 2025 17:24	Yuriy Lyfenko	CPPg++13.3.0	Error
Aug 31, 2025 17:22	Yuriy Lyfenko	CPPg++13.3.0	Error
Aug 31, 2025 17:18	Yuriy Lyfenko	CPPg++13.3.0	Success	4,122
Aug 31, 2025 17:16	Yuriy Lyfenko	CPPg++13.3.0	Success	7,049
Aug 31, 2025 17:10	Yuriy Lyfenko	CPPg++13.3.0	Success	5,976
Aug 31, 2025 17:07	Yuriy Lyfenko	CPPg++13.3.0	Success	7,542
Aug 31, 2025 17:04	Yuriy Lyfenko	CPPg++13.3.0	Success	3,942
Aug 31, 2025 17:03	Yuriy Lyfenko	CPPg++13.3.0	Success	6,225
Aug 31, 2025 16:58	Yuriy Lyfenko	CPPg++13.3.0	Success	6,207
Aug 25, 2025 16:16	Oleg Kovalov	GOgo1.25.0	Success	12,304
Aug 16, 2025 15:51	Aniruddha Deb	CPPclang++18.1.3	Success	3,933+40.09 RP
Aug 16, 2025 15:49	Aniruddha Deb	CPPg++13.3.0	Success	3,996+124.38 RP
Aug 14, 2025 22:23	Aniruddha Deb	CPPclang++18.1.3	Success	4,205+1.13 RP
Aug 14, 2025 22:22	Aniruddha Deb	CPPclang++18.1.3	Success	4,207+79.72 RP
Aug 14, 2025 22:21	Aniruddha Deb	CPPg++13.3.0	Error
Aug 12, 2025 01:37	SergeBou	CPPg++13.3.0	Success	12,415+642.57 RP
Aug 12, 2025 01:27	SergeBou	CSHARP9.0.8	Success	61,386+0.04 RP
Aug 12, 2025 01:16	SergeBou	CSHARP9.0.8	Success	61,395+0.08 RP
Aug 12, 2025 01:03	SergeBou	CSHARP9.0.8	Success	61,414
Aug 12, 2025 00:57	SergeBou	CSHARP9.0.8	Success	61,432
Aug 12, 2025 00:50	SergeBou	CSHARP9.0.8	Success	61,424
Aug 12, 2025 00:38	SergeBou	CSHARP9.0.8	Success	61,409+230.44 RP
Jul 29, 2025 21:00	Aniruddha Deb	CPPg++13.3.0	Error
Jul 2, 2025 16:39	Aniruddha Deb	CPPg++13.3.0	Success	4,429
Jul 2, 2025 16:39	Aniruddha Deb	CPPg++13.3.0	Success	4,423
Jun 21, 2025 20:49	Aniruddha Deb	CPPg++13.3.0	Success	4,353+42.98 RP
May 31, 2025 15:16	Keefe	CPPclang++18.1.3	Success	4,032+15.28 RP
May 31, 2025 15:16	Keefe	CPPg++13.3.0	Success	4,100
May 31, 2025 15:11	Keefe	CPPg++13.3.0	Success	4,057+19.89 RP
May 31, 2025 15:08	Keefe	CPPg++13.3.0	Success	4,787
May 17, 2025 22:30	Keefe	CPPg++13.3.0	Success	4,090+4.18 RP
May 17, 2025 22:28	Keefe	CPPg++13.3.0	Success	4,097+98.89 RP
May 17, 2025 22:28	Keefe	CPPg++13.3.0	Error
May 13, 2025 01:02	Hayden Donnelly	RUSTrust-1.86.0	Success	60,083+166.44 RP
May 13, 2025 00:53	Hayden Donnelly	RUSTrust-1.86.0	Error
May 6, 2025 11:32	Keefe	CPPg++13.3.0	Success	4,270+78.96 RP
May 6, 2025 11:26	ethereal	CPPg++13.3.0	Success	4,134+2'418.96 RP
May 6, 2025 11:23	Keefe	CPPg++13.3.0	Success	23,062
May 6, 2025 11:15	Keefe	CPPg++13.3.0	Success	4,419+42.71 RP
May 6, 2025 11:12	Keefe	CPPg++13.3.0	Error
May 6, 2025 11:11	Keefe	CPPg++13.3.0	Error
May 6, 2025 11:09	Keefe	CPPg++13.3.0	Error
May 6, 2025 11:00	Keefe	CPPg++13.3.0	Success	4,504+94.40 RP
May 6, 2025 10:57	Keefe	CPPg++13.3.0	Success	5,486
May 6, 2025 10:55	Keefe	CPPg++13.3.0	Success	4,704+490.79 RP
May 6, 2025 10:52	Keefe	CPPg++13.3.0	Error
May 6, 2025 10:50	Keefe	CPPg++13.3.0	Success	8,751
May 6, 2025 10:48	Keefe	CPPg++13.3.0	Success	31,229
May 6, 2025 10:44	Keefe	CPPg++13.3.0	Success	10,191
Apr 24, 2025 22:18	Keefe	CPPg++13.3.0	Error
Apr 24, 2025 22:14	Keefe	CPPg++13.3.0	Success	6,116+696.44 RP
Apr 24, 2025 22:13	Keefe	CPPg++13.3.0	Error
Apr 24, 2025 22:12	Keefe	CPPg++13.3.0	Error
Apr 24, 2025 22:11	Keefe	CPPclang++18.1.3	Error
Apr 18, 2025 20:44	Keefe	CPPclang++18.1.3	Success	14,510
Apr 18, 2025 20:41	Keefe	CPPclang++18.1.3	Success	10,654+938.61 RP
Apr 18, 2025 20:41	Keefe	CPPclang++18.1.3	Error
Apr 18, 2025 20:40	Keefe	CPPclang++18.1.3	Error
Apr 18, 2025 20:38	Keefe	CPPclang++18.1.3	Error
Apr 8, 2025 07:20	NoSIMD_C#	CPPg++13.2.0	Success	53,972+7.00 RP
Apr 4, 2025 08:27	NoSIMD_C#	CSHARP9.0.3	Success	105,000
Apr 2, 2025 15:23	CountHarebourg	CPPclang++18.1.3	Success	381,785+26.19 RP
Apr 1, 2025 21:55	Aniruddha Deb	CPPg++13.2.0	Success	5,280
Apr 1, 2025 21:55	Aniruddha Deb	CPPg++13.2.0	Success	5,225
Apr 1, 2025 21:55	Aniruddha Deb	CPPg++13.2.0	Success	4,897
Apr 1, 2025 21:53	Aniruddha Deb	CPPg++13.2.0	Success	4,789
Apr 1, 2025 21:53	Aniruddha Deb	CPPg++13.2.0	Error
Apr 1, 2025 21:49	Aniruddha Deb	CPPg++13.2.0	Success	4,436+11.12 RP
Apr 1, 2025 21:49	Aniruddha Deb	CPPg++13.2.0	Success	4,510
Apr 1, 2025 21:49	Aniruddha Deb	CPPg++13.2.0	Success	4,519
Apr 1, 2025 21:49	Aniruddha Deb	CPPg++13.2.0	Success	4,458+54.97 RP
Apr 1, 2025 21:30	Aniruddha Deb	CPPg++13.2.0	Success	4,570+73.12 RP
Apr 1, 2025 21:30	Aniruddha Deb	CPPg++13.2.0	Success	4,728+32.16 RP
Apr 1, 2025 21:30	Aniruddha Deb	CPPg++13.2.0	Success	4,801+14.22 RP
Apr 1, 2025 21:30	Aniruddha Deb	CPPg++13.2.0	Success	4,935
Apr 1, 2025 21:30	Aniruddha Deb	CPPg++13.2.0	Success	4,855
Apr 1, 2025 21:29	Aniruddha Deb	CPPg++13.2.0	Success	4,834+596.36 RP
Apr 1, 2025 21:09	Aniruddha Deb	CPPg++13.2.0	Success	6,792+1'303.01 RP
Apr 1, 2025 21:00	Aniruddha Deb	CPPg++13.2.0	Success	59,240
Apr 1, 2025 20:53	Aniruddha Deb	CPPg++13.2.0	Success	59,155
Apr 1, 2025 20:47	Aniruddha Deb	CPPg++13.2.0	Success	59,132
Apr 1, 2025 20:42	Aniruddha Deb	CPPg++13.2.0	Success	59,123
Apr 1, 2025 20:31	Aniruddha Deb	CPPg++13.2.0	Success	59,062+169.31 RP

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