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	1:20.1.2-0ubuntu1~24.04.3	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.

Date	Author	Language	Status	Score
Sep 26, 2026 18:23	Kevin Heavey	CSHARP9.0.18	Success	1,559+81.25 RP
Sep 26, 2026 18:21	Kevin Heavey	GOgo1.26.2	Success	1,559+69.19 RP
Sep 26, 2026 18:20	Kevin Heavey	ZIG0.15.1	Success	1,559+113.17 RP
Sep 26, 2026 18:19	Kevin Heavey	RUSTrust-1.95.0	Success	1,559+73.21 RP
Sep 26, 2026 14:56	Kevin Heavey	CPPclang++20.1.2	Success	1,558+16.46 RP
Sep 26, 2026 14:53	Kevin Heavey	CPPclang++20.1.2	Success	1,560+73.54 RP
Sep 26, 2026 14:46	Kevin Heavey	CPPclang++20.1.2	Success	1,569+24.32 RP
Sep 26, 2026 14:38	Kevin Heavey	CPPclang++20.1.2	Success	1,572+44.36 RP
Sep 26, 2026 14:36	Kevin Heavey	CPPclang++20.1.2	Success	1,578
Sep 26, 2026 14:35	Kevin Heavey	CPPclang++20.1.2	Success	1,578+27.99 RP
Sep 26, 2026 14:32	Kevin Heavey	CPPg++14.2.0	Success	1,588
Sep 26, 2026 14:28	Kevin Heavey	CPPg++14.2.0	Success	1,585+74.73 RP
Sep 26, 2026 14:22	Kevin Heavey	CPPg++14.2.0	Success	1,604+151.69 RP
Sep 26, 2026 14:11	Kevin Heavey	CPPg++14.2.0	Success	1,644+148.01 RP
Sep 26, 2026 14:03	Kevin Heavey	CPPg++14.2.0	Success	1,685+5'934.72 RP
Sep 23, 2026 18:19	Matthias Görgens	CPPclang++19.1.1	Success	6,797+1'471.24 RP
Sep 21, 2026 17:50	Andrew Epstein	GOgo1.26.2	Success	1,576+130.29 RP
Sep 21, 2026 17:49	Andrew Epstein	CSHARP9.0.15	Success	1,579+125.80 RP
Sep 21, 2026 17:48	Andrew Epstein	ZIG0.15.1	Success	1,587+74.55 RP
Sep 21, 2026 17:47	Andrew Epstein	RUSTrust-1.95.0	Success	1,577+110.62 RP
Sep 21, 2026 17:42	Andrew Epstein	GOgo1.26.2	Success	1,608+7.73 RP
Sep 21, 2026 17:31	Andrew Epstein	CPPg++14.2.0	Success	1,577+56.00 RP
Sep 21, 2026 17:28	Andrew Epstein	CPPg++14.2.0	Success	12,806
Sep 21, 2026 17:27	Andrew Epstein	CPPg++14.2.0	Success	6,437
Sep 21, 2026 17:25	Andrew Epstein	CPPg++14.2.0	Success	1,587+3.97 RP
Sep 21, 2026 17:23	Andrew Epstein	CPPg++14.2.0	Success	1,588+7.92 RP
Sep 21, 2026 17:22	Andrew Epstein	CPPg++14.2.0	Success	1,590+11.84 RP
Sep 21, 2026 17:20	Andrew Epstein	CPPg++14.2.0	Success	9,695
Sep 21, 2026 17:18	Andrew Epstein	CPPg++14.2.0	Success	9,685
Sep 21, 2026 17:15	Andrew Epstein	CPPg++14.2.0	Success	19,332
Sep 21, 2026 17:09	Andrew Epstein	CPPg++14.2.0	Success	1,593+7.87 RP
Sep 21, 2026 17:08	Andrew Epstein	CPPg++14.2.0	Success	1,595+62.27 RP
Sep 21, 2026 17:06	Andrew Epstein	CPPg++14.2.0	Success	6,643
Sep 21, 2026 17:04	Andrew Epstein	CPPg++14.2.0	Success	19,673
Sep 21, 2026 16:57	Andrew Epstein	CPPg++14.2.0	Success	16,337
Sep 21, 2026 16:53	Andrew Epstein	CPPg++14.2.0	Success	16,716
Sep 21, 2026 16:39	Andrew Epstein	CPPg++14.2.0	Success	1,613
Sep 21, 2026 16:37	Andrew Epstein	CPPg++14.2.0	Success	1,613
Sep 21, 2026 16:32	Andrew Epstein	CPPg++14.2.0	Success	6,638
Sep 21, 2026 16:30	Andrew Epstein	CPPg++14.2.0	Success	1,611+11.54 RP
Sep 21, 2026 16:22	Andrew Epstein	CPPg++14.2.0	Success	1,628
Sep 21, 2026 16:19	Andrew Epstein	CPPg++14.2.0	Success	1,615
Sep 21, 2026 16:14	Andrew Epstein	CPPg++14.2.0	Success	10,122
Sep 21, 2026 16:13	Andrew Epstein	CPPg++14.2.0	Success	1,614
Sep 21, 2026 16:12	Andrew Epstein	CPPg++14.2.0	Success	1,614+26.76 RP
Sep 21, 2026 16:11	Andrew Epstein	CPPg++14.2.0	Success	1,622
Sep 21, 2026 16:08	Andrew Epstein	CPPg++14.2.0	Success	6,541
Sep 21, 2026 16:02	Andrew Epstein	CPPg++14.2.0	Success	26,324
Sep 21, 2026 16:01	Andrew Epstein	CPPg++14.2.0	Success	1,621+45.33 RP
Sep 21, 2026 15:59	Andrew Epstein	CPPclang++20.1.2	Success	1,650
Sep 21, 2026 15:56	Andrew Epstein	CPPg++14.2.0	Success	20,239
Sep 21, 2026 15:53	Andrew Epstein	CPPg++14.2.0	Success	16,449
Sep 21, 2026 15:47	Andrew Epstein	CPPg++14.2.0	Success	10,378
Sep 21, 2026 15:40	Andrew Epstein	CPPclang++20.1.2	Success	1,636
Sep 21, 2026 15:33	Andrew Epstein	CPPg++14.2.0	Success	10,638
Sep 21, 2026 15:30	Andrew Epstein	CPPclang++20.1.2	Success	1,633+14.96 RP
Sep 21, 2026 15:25	Andrew Epstein	CPPg++14.2.0	Success	16,925
Sep 21, 2026 15:17	Andrew Epstein	CPPg++14.2.0	Success	28,510
Sep 21, 2026 15:16	Andrew Epstein	CPPclang++20.1.2	Success	1,637+62.79 RP
Sep 21, 2026 15:12	Andrew Epstein	CPPg++14.2.0	Success	21,574
Sep 21, 2026 15:05	Andrew Epstein	CPPg++14.2.0	Success	25,270
Sep 21, 2026 15:04	Andrew Epstein	CPPclang++20.1.2	Success	1,654+25.48 RP
Sep 21, 2026 14:58	Andrew Epstein	CPPclang++20.1.2	Success	13,483
Sep 21, 2026 14:58	Andrew Epstein	CPPg++14.2.0	Success	13,498
Sep 21, 2026 14:56	Andrew Epstein	CPPg++14.2.0	Success	1,661+266.73 RP
Sep 21, 2026 14:54	Andrew Epstein	CPPg++14.2.0	Success	13,696
Sep 21, 2026 14:51	Andrew Epstein	CPPg++14.2.0	Success	10,156
Sep 21, 2026 14:46	Andrew Epstein	CPPg++14.2.0	Success	20,760
Sep 21, 2026 14:38	Andrew Epstein	CPPg++14.2.0	Success	14,452
Sep 21, 2026 14:36	Andrew Epstein	CPPg++14.2.0	Success	1,738+52.49 RP
Sep 21, 2026 14:30	Andrew Epstein	CPPg++14.2.0	Success	28,370
Sep 21, 2026 14:25	Andrew Epstein	CPPg++14.2.0	Success	1,754+154.94 RP
Sep 21, 2026 14:24	Andrew Epstein	CPPg++14.2.0	Success	29,334
Sep 21, 2026 14:22	Andrew Epstein	CPPg++14.2.0	Success	1,803+394.33 RP
Sep 21, 2026 14:19	Andrew Epstein	CPPg++14.2.0	Success	25,858
Sep 21, 2026 14:14	Andrew Epstein	CPPg++14.2.0	Success	18,686
Sep 21, 2026 14:11	Andrew Epstein	CPPg++14.2.0	Success	23,029
Sep 21, 2026 14:04	Andrew Epstein	CPPg++14.2.0	Success	23,484
Sep 21, 2026 14:02	Andrew Epstein	CPPg++14.2.0	Success	1,941+365.00 RP
Sep 21, 2026 13:55	Andrew Epstein	CPPg++14.2.0	Success	2,089+2.29 RP
Sep 21, 2026 13:53	Andrew Epstein	CPPg++14.2.0	Success	23,705
Sep 21, 2026 13:45	Andrew Epstein	CPPg++14.2.0	Success	24,897
Sep 21, 2026 13:44	Andrew Epstein	CPPg++14.2.0	Success	2,090
Sep 21, 2026 13:41	Andrew Epstein	CPPg++14.2.0	Success	2,090+554.57 RP
Sep 21, 2026 13:40	Andrew Epstein	CPPclang++20.1.2	Success	28,686
Sep 21, 2026 13:39	Andrew Epstein	CPPg++14.2.0	Success	28,979
Sep 21, 2026 13:35	Andrew Epstein	CPPg++14.2.0	Success	8,961
Sep 21, 2026 13:29	Andrew Epstein	CPPg++14.2.0	Success	31,446
Sep 21, 2026 13:27	Andrew Epstein	CPPg++14.2.0	Success	2,364+1'194.30 RP
Sep 21, 2026 13:23	Andrew Epstein	CPPg++14.2.0	Success	26,934
Sep 19, 2026 13:28	Andrew Epstein	CPPg++14.2.0	Success	3,485
Sep 19, 2026 13:23	Andrew Epstein	CPPg++14.2.0	Success	4,109
Sep 15, 2026 23:44	Josu San Martin	CPPg++13.3.0	Success	3,211
Sep 15, 2026 16:40	Haha Expert	CPPg++14.2.0	Success	4,246+6.64 RP
Sep 15, 2026 16:36	Haha Expert	CPPg++14.2.0	Success	4,656
Sep 15, 2026 16:26	Haha Expert	CPPg++14.2.0	Success	4,258+77.86 RP
Sep 15, 2026 16:10	Haha Expert	CPPg++14.2.0	Success	4,404+120.13 RP
Sep 15, 2026 16:03	Haha Expert	CPPg++13.3.0	Success	5,190
Sep 15, 2026 16:02	Haha Expert	CPPclang++20.1.2	Success	5,446
Sep 15, 2026 15:59	Haha Expert	CPPg++14.2.0	Success	4,668

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