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
Jun 20, 2026 17:34	A_Shaman	CPPg++10.5.0	Success	6,893+1'152.81 RP
Jun 20, 2026 17:30	A_Shaman	CPPg++10.5.0	Success	33,564+297.94 RP
Jun 20, 2026 17:27	A_Shaman	CPPg++10.5.0	Error
Jun 20, 2026 17:25	A_Shaman	CPPg++10.5.0	Error
Jun 20, 2026 17:22	A_Shaman	CPPg++10.5.0	Error
Jun 20, 2026 07:44	A_Shaman	CPPg++10.5.0	Error
Jun 19, 2026 13:11	Victor Mercklé	CPPg++14.2.0	Success	1,650
Jun 19, 2026 13:06	Victor Mercklé	CPPg++14.2.0	Success	1,651
Jun 19, 2026 13:01	Victor Mercklé	CPPg++14.2.0	Success	1,651
Jun 19, 2026 12:56	Victor Mercklé	CPPg++14.2.0	Success	1,655
Jun 19, 2026 12:51	Victor Mercklé	CPPg++14.2.0	Success	1,650
Jun 19, 2026 12:41	Victor Mercklé	CPPg++14.2.0	Success	1,653
Jun 19, 2026 12:36	Victor Mercklé	CPPg++14.2.0	Success	1,654
Jun 19, 2026 12:31	Victor Mercklé	CPPg++14.2.0	Success	1,650
Jun 19, 2026 12:26	Victor Mercklé	CPPg++14.2.0	Success	1,656
Jun 19, 2026 12:21	Victor Mercklé	CPPg++14.2.0	Success	1,821
Jun 19, 2026 04:51	Victor Mercklé	CPPg++14.2.0	Success	1,653
Jun 19, 2026 04:46	Victor Mercklé	CPPg++14.2.0	Success	1,650
Jun 19, 2026 04:41	Victor Mercklé	CPPg++14.2.0	Success	1,661
Jun 19, 2026 04:36	Victor Mercklé	CPPg++14.2.0	Success	1,655
Jun 19, 2026 04:31	Victor Mercklé	CPPg++14.2.0	Success	1,650
Jun 19, 2026 04:25	Victor Mercklé	CPPg++14.2.0	Success	1,653
Jun 19, 2026 04:20	Victor Mercklé	CPPg++14.2.0	Success	1,649
Jun 19, 2026 04:15	Victor Mercklé	CPPg++14.2.0	Success	1,653
Jun 19, 2026 04:10	Victor Mercklé	CPPg++14.2.0	Success	1,656
Jun 19, 2026 04:05	Victor Mercklé	CPPg++14.2.0	Success	1,657
Jun 18, 2026 20:33	Victor Mercklé	CPPg++14.2.0	Success	1,657
Jun 18, 2026 20:28	Victor Mercklé	CPPg++14.2.0	Success	1,654
Jun 18, 2026 20:23	Victor Mercklé	CPPg++14.2.0	Success	1,653
Jun 18, 2026 20:18	Victor Mercklé	CPPg++14.2.0	Success	1,654
Jun 18, 2026 20:13	Victor Mercklé	CPPg++14.2.0	Success	1,656
Jun 18, 2026 20:08	Victor Mercklé	CPPg++14.2.0	Success	1,648+7.36 RP
Jun 18, 2026 20:03	Victor Mercklé	CPPg++14.2.0	Success	1,657
Jun 18, 2026 19:58	Victor Mercklé	CPPg++14.2.0	Success	1,650
Jun 18, 2026 19:53	Victor Mercklé	CPPg++14.2.0	Success	1,654
Jun 18, 2026 19:48	Victor Mercklé	CPPg++14.2.0	Success	1,652
Jun 18, 2026 12:49	Victor Mercklé	CPPg++14.2.0	Success	1,650
Jun 18, 2026 12:44	Victor Mercklé	CPPg++14.2.0	Success	1,655
Jun 18, 2026 12:39	Victor Mercklé	CPPg++14.2.0	Success	1,649+29.34 RP
Jun 18, 2026 12:34	Victor Mercklé	CPPg++14.2.0	Success	1,653+7.32 RP
Jun 18, 2026 12:29	Victor Mercklé	CPPg++14.2.0	Success	1,654+21.90 RP
Jun 18, 2026 12:24	Victor Mercklé	CPPg++14.2.0	Success	1,661
Jun 18, 2026 12:19	Victor Mercklé	CPPg++14.2.0	Success	1,658
Jun 18, 2026 12:14	Victor Mercklé	CPPg++14.2.0	Success	1,658
Jun 18, 2026 12:09	Victor Mercklé	CPPg++14.2.0	Success	1,659
Jun 18, 2026 12:04	Victor Mercklé	CPPg++14.2.0	Success	1,675
Jun 18, 2026 02:32	Victor Mercklé	CPPg++14.2.0	Success	1,657+7.28 RP
Jun 18, 2026 02:25	Victor Mercklé	CPPg++14.2.0	Success	1,666
Jun 18, 2026 02:17	Victor Mercklé	CPPg++14.2.0	Success	1,661
Jun 18, 2026 02:12	Victor Mercklé	CPPg++14.2.0	Success	1,668
Jun 18, 2026 02:06	Victor Mercklé	CPPg++14.2.0	Success	1,658
Jun 17, 2026 17:16	Victor Mercklé	CPPg++14.2.0	Success	1,666
Jun 17, 2026 17:11	Victor Mercklé	CPPg++14.2.0	Success	1,658
Jun 17, 2026 17:06	Victor Mercklé	CPPg++14.2.0	Success	1,664
Jun 17, 2026 17:01	Victor Mercklé	CPPg++14.2.0	Success	1,667
Jun 17, 2026 16:56	Victor Mercklé	CPPg++14.2.0	Success	1,659
Jun 17, 2026 16:51	Victor Mercklé	CPPg++14.2.0	Success	1,658
Jun 17, 2026 16:46	Victor Mercklé	CPPg++14.2.0	Success	1,658+7.28 RP
Jun 17, 2026 16:41	Victor Mercklé	CPPg++14.2.0	Success	1,665
Jun 17, 2026 16:36	Victor Mercklé	CPPg++14.2.0	Success	1,662
Jun 17, 2026 16:31	Victor Mercklé	CPPg++14.2.0	Success	1,659
Jun 17, 2026 16:26	Victor Mercklé	CPPg++14.2.0	Success	1,660
Jun 17, 2026 16:21	Victor Mercklé	CPPg++14.2.0	Success	1,659+7.26 RP
Jun 17, 2026 16:16	Victor Mercklé	CPPg++14.2.0	Success	1,663
Jun 17, 2026 16:11	Victor Mercklé	CPPg++14.2.0	Success	1,664
Jun 17, 2026 16:06	Victor Mercklé	CPPg++14.2.0	Success	1,660
Jun 17, 2026 16:01	Victor Mercklé	CPPg++14.2.0	Success	1,660
Jun 17, 2026 15:56	Victor Mercklé	CPPg++14.2.0	Success	1,660
Jun 17, 2026 15:51	Victor Mercklé	CPPg++14.2.0	Success	1,664
Jun 17, 2026 15:46	Victor Mercklé	CPPg++14.2.0	Success	1,667
Jun 17, 2026 15:41	Victor Mercklé	CPPg++14.2.0	Success	1,672
Jun 17, 2026 15:36	Victor Mercklé	CPPg++14.2.0	Success	1,663
Jun 17, 2026 15:30	Victor Mercklé	CPPg++14.2.0	Success	1,664
Jun 17, 2026 15:25	Victor Mercklé	CPPg++14.2.0	Success	1,663
Jun 17, 2026 15:20	Victor Mercklé	CPPg++14.2.0	Success	1,660+7.26 RP
Jun 17, 2026 15:15	Victor Mercklé	CPPg++14.2.0	Success	1,664
Jun 17, 2026 15:10	Victor Mercklé	CPPg++14.2.0	Success	1,661+36.14 RP
Jun 17, 2026 15:05	Victor Mercklé	CPPg++14.2.0	Success	1,669
Jun 17, 2026 15:00	Victor Mercklé	CPPg++14.2.0	Success	1,670
Jun 17, 2026 14:55	Victor Mercklé	CPPg++14.2.0	Success	1,667
Jun 17, 2026 14:50	Victor Mercklé	CPPg++14.2.0	Success	1,666+50.22 RP
Jun 17, 2026 14:45	Victor Mercklé	CPPg++14.2.0	Success	1,673
Jun 17, 2026 14:40	Victor Mercklé	CPPg++14.2.0	Success	1,676
Jun 17, 2026 14:35	Victor Mercklé	CPPg++14.2.0	Success	1,676
Jun 17, 2026 14:30	Victor Mercklé	CPPg++14.2.0	Success	1,673+3.57 RP
Jun 17, 2026 14:25	Victor Mercklé	CPPg++14.2.0	Success	1,675
Jun 17, 2026 14:20	Victor Mercklé	CPPg++14.2.0	Success	1,676
Jun 17, 2026 14:14	Victor Mercklé	CPPg++14.2.0	Success	1,747
Jun 17, 2026 14:09	Victor Mercklé	CPPg++14.2.0	Success	1,726
Jun 15, 2026 14:32	Victor Mercklé	RUSTrust-1.95.0	Success	1,674
Jun 15, 2026 14:27	Victor Mercklé	RUSTrust-1.95.0	Success	1,677
Jun 15, 2026 14:22	Victor Mercklé	RUSTrust-1.95.0	Success	1,673+160.13 RP
Jun 13, 2026 16:11	Victor Mercklé	GOgo1.26.2	Success	1,694
Jun 13, 2026 16:06	Victor Mercklé	GOgo1.26.2	Success	1,694
Jun 13, 2026 15:51	Victor Mercklé	GOgo1.26.2	Success	1,694+518.16 RP
Jun 13, 2026 02:24	Victor Mercklé	CSHARP10.0.7	Success	1,690
Jun 13, 2026 02:19	Victor Mercklé	CSHARP10.0.7	Success	1,686
Jun 13, 2026 02:04	Victor Mercklé	CSHARP10.0.7	Success	1,683+553.84 RP
Jun 13, 2026 01:52	Victor Mercklé	ZIG0.16.0	Success	1,688+3.51 RP
Jun 13, 2026 01:43	Victor Mercklé	ZIG0.16.0	Success	1,690

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