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
Jan 5, 2026 05:24	Josu San Martin	CPPg++13.3.0	Success	3,360
Jan 5, 2026 05:12	Josu San Martin	RUSTrust-1.92.0	Success	3,068+173.72 RP
Jan 5, 2026 04:36	Josu San Martin	CPPg++13.3.0	Success	3,213
Jan 5, 2026 04:31	Josu San Martin	RUSTrust-1.92.0	Success	3,152+2.02 RP
Jan 5, 2026 04:29	Josu San Martin	RUSTrust-1.92.0	Success	3,234
Jan 5, 2026 04:29	Josu San Martin	RUSTrust-1.92.0	Success	3,153+232.56 RP
Jan 5, 2026 03:56	Josu San Martin	RUSTrust-1.92.0	Success	3,316
Jan 5, 2026 03:56	Josu San Martin	RUSTrust-1.92.0	Success	3,300
Jan 5, 2026 03:55	Josu San Martin	RUSTrust-1.92.0	Success	3,273+9.32 RP
Jan 5, 2026 03:11	Josu San Martin	CPPg++13.3.0	Success	3,348
Jan 5, 2026 02:52	Josu San Martin	RUSTrust-1.92.0	Success	3,278+120.42 RP
Jan 5, 2026 02:30	Josu San Martin	CPPg++13.3.0	Success	3,487
Jan 5, 2026 02:14	Josu San Martin	RUSTrust-1.92.0	Success	3,344+292.58 RP
Jan 4, 2026 18:19	Josu San Martin	CPPg++13.3.0	Success	3,533
Jan 4, 2026 18:19	Josu San Martin	CPPg++13.3.0	Success	3,534
Jan 4, 2026 18:16	Josu San Martin	RUSTrust-1.92.0	Success	3,516+741.46 RP
Jan 1, 2026 01:12	Josu San Martin	CPPg++13.3.0	Success	4,127
Jan 1, 2026 01:03	Josu San Martin	CPPg++13.3.0	Success	4,710
Jan 1, 2026 00:52	Josu San Martin	GOgo1.25.5	Success	34,961
Jan 1, 2026 00:50	Josu San Martin	RUSTrust-1.92.0	Success	13,456
Jan 1, 2026 00:44	Josu San Martin	GOgo1.25.5	Success	34,452
Jan 1, 2026 00:35	Josu San Martin	RUSTrust-1.92.0	Success	4,043+643.01 RP
Jan 1, 2026 00:26	Josu San Martin	CPPg++13.3.0	Success	4,047+1'704.04 RP
Jan 1, 2026 00:08	Josu San Martin	RUSTrust-1.92.0	Success	13,439
Dec 31, 2025 23:58	Josu San Martin	RUSTrust-1.92.0	Success	13,039+22.44 RP
Dec 31, 2025 23:57	Josu San Martin	CPPg++13.3.0	Success	13,437
Dec 31, 2025 23:57	Josu San Martin	CPPg++13.3.0	Success	13,432+222.84 RP
Dec 31, 2025 23:50	Josu San Martin	CPPg++13.3.0	Success	19,170+521.65 RP
Dec 31, 2025 15:59	Aniruddha Deb	CPPclang++18.1.3	Success	3,999
Dec 31, 2025 15:50	Aniruddha Deb	CPPclang++18.1.3	Success	4,094
Dec 31, 2025 15:46	Aniruddha Deb	CPPclang++18.1.3	Success	4,161
Dec 31, 2025 15:45	Aniruddha Deb	CPPg++13.3.0	Success	4,102
Dec 9, 2025 03:16	Yehor Bondar	CPPclang++18.1.3	Success	383,917+26.05 RP
Nov 20, 2025 00:50	izotoff	CPPg++13.3.0	Success	4,712
Nov 20, 2025 00:49	izotoff	CPPg++13.3.0	Success	53,124
Nov 20, 2025 00:47	izotoff	CPPg++13.3.0	Error
Nov 20, 2025 00:46	izotoff	CPPg++13.3.0	Success	4,710+1'364.59 RP
Nov 20, 2025 00:42	izotoff	CPPg++13.3.0	Success	13,183+448.57 RP
Nov 20, 2025 00:38	izotoff	CPPg++13.3.0	Success	105,864
Nov 20, 2025 00:30	izotoff	CPPg++13.3.0	Success	112,124
Nov 18, 2025 14:10	izotoff	GOgo1.25.4	Success	38,312
Nov 14, 2025 16:36	izotoff	GOgo1.25.4	Success	32,792
Nov 14, 2025 16:15	izotoff	GOgo1.25.4	Success	32,260+283.09 RP
Nov 14, 2025 16:04	izotoff	GOgo1.25.4	Success	371,838+26.89 RP
Nov 14, 2025 15:53	izotoff	GOgo1.25.4	Error
Nov 1, 2025 03:15	Huy Duc Le	CPPclang++18.1.3	Success	2,980
Nov 1, 2025 02:59	Huy Duc Le	CPPg++13.3.0	Success	2,971+11.32 RP
Nov 1, 2025 02:47	Huy Duc Le	CPPg++13.3.0	Success	2,985
Nov 1, 2025 02:46	Huy Duc Le	CPPg++13.3.0	Success	2,978
Nov 1, 2025 02:45	Huy Duc Le	CPPg++13.3.0	Success	2,979
Nov 1, 2025 02:45	Huy Duc Le	CPPg++13.3.0	Error
Nov 1, 2025 02:43	Huy Duc Le	CPPg++13.3.0	Success	2,989
Nov 1, 2025 02:42	Huy Duc Le	CPPg++13.3.0	Success	2,985
Nov 1, 2025 02:40	Huy Duc Le	CPPg++13.3.0	Error
Nov 1, 2025 02:37	Huy Duc Le	CPPg++13.3.0	Success	2,980
Nov 1, 2025 02:35	Huy Duc Le	CPPg++13.3.0	Success	2,982
Nov 1, 2025 02:33	Huy Duc Le	CPPg++13.3.0	Success	2,981
Nov 1, 2025 02:31	Huy Duc Le	CPPg++13.3.0	Success	2,983
Nov 1, 2025 02:30	Huy Duc Le	CPPg++13.3.0	Success	3,174
Nov 1, 2025 02:26	Huy Duc Le	CPPg++13.3.0	Success	2,977
Nov 1, 2025 02:25	Huy Duc Le	CPPg++13.3.0	Error
Nov 1, 2025 02:20	Huy Duc Le	CPPg++13.3.0	Success	2,976+9.02 RP
Nov 1, 2025 02:13	Huy Duc Le	CPPg++13.3.0	Success	2,983
Nov 1, 2025 02:13	Huy Duc Le	CPPg++13.3.0	Success	3,002
Oct 31, 2025 16:36	Huy Duc Le	CPPg++13.3.0	Success	3,003
Oct 31, 2025 16:31	Huy Duc Le	CPPg++13.3.0	Error
Oct 31, 2025 16:25	Huy Duc Le	CPPg++13.3.0	Error
Oct 31, 2025 16:20	Huy Duc Le	CPPg++13.3.0	Success	3,008
Oct 31, 2025 16:19	Huy Duc Le	CPPg++13.3.0	Success	3,007
Oct 31, 2025 16:18	Huy Duc Le	CPPg++13.3.0	Success	3,008
Oct 31, 2025 16:15	Huy Duc Le	CPPg++13.3.0	Success	3,004
Oct 31, 2025 16:11	Huy Duc Le	CPPg++13.3.0	Error
Oct 31, 2025 16:08	Huy Duc Le	CPPg++13.3.0	Error
Oct 31, 2025 15:59	Huy Duc Le	CPPg++13.3.0	Success	2,987
Oct 31, 2025 15:56	Huy Duc Le	CPPg++13.3.0	Success	2,983
Oct 31, 2025 15:56	Huy Duc Le	CPPg++13.3.0	Success	2,980
Oct 31, 2025 15:55	Huy Duc Le	CPPg++13.3.0	Success	2,981
Oct 31, 2025 15:52	Huy Duc Le	CPPg++13.3.0	Success	3,180
Oct 31, 2025 15:50	Huy Duc Le	CPPg++13.3.0	Success	3,163
Oct 31, 2025 15:49	Huy Duc Le	CPPg++13.3.0	Success	3,166
Oct 31, 2025 15:43	Huy Duc Le	CPPg++13.3.0	Success	3,182
Oct 31, 2025 15:43	Huy Duc Le	CPPg++13.3.0	Success	4,126
Oct 31, 2025 15:41	Huy Duc Le	CPPg++13.3.0	Success	3,096
Oct 31, 2025 15:41	Huy Duc Le	CPPg++13.3.0	Success	3,069
Oct 31, 2025 15:40	Huy Duc Le	CPPg++13.3.0	Success	3,067
Oct 31, 2025 15:35	Huy Duc Le	CPPclang++18.1.3	Success	3,042
Oct 31, 2025 15:35	Huy Duc Le	CPPg++13.3.0	Success	3,073
Oct 31, 2025 15:32	Huy Duc Le	CPPg++13.3.0	Success	2,981
Oct 31, 2025 15:29	Huy Duc Le	CPPg++13.3.0	Success	2,980
Oct 31, 2025 15:28	Huy Duc Le	CPPg++13.3.0	Success	2,986
Oct 31, 2025 15:28	Huy Duc Le	CPPg++13.3.0	Error
Oct 31, 2025 15:26	Huy Duc Le	CPPg++13.3.0	Success	2,983
Oct 31, 2025 15:25	Huy Duc Le	CPPg++13.3.0	Success	2,981
Oct 31, 2025 15:24	Huy Duc Le	CPPg++13.3.0	Success	2,982
Oct 31, 2025 15:24	Huy Duc Le	CPPg++13.3.0	Success	2,982
Oct 31, 2025 15:22	Huy Duc Le	CPPg++13.3.0	Success	2,984
Oct 31, 2025 15:21	Huy Duc Le	CPPg++13.3.0	Success	2,982
Oct 31, 2025 15:19	Huy Duc Le	CPPg++13.3.0	Success	2,980+6.74 RP
Oct 31, 2025 15:02	Huy Duc Le	CPPg++13.3.0	Success	3,069
Oct 31, 2025 14:55	Huy Duc Le	CPPg++13.3.0	Success	9,009

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