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
Jul 29, 2026 21:02	anboto1	CPPg++14.2.0	Success	3,132
Jul 29, 2026 21:01	anboto1	CPPg++14.2.0	Success	3,800
Jul 29, 2026 20:59	anboto1	CPPg++10.5.0	Success	3,146
Jul 29, 2026 20:55	anboto1	CPPg++14.2.0	Success	3,508
Jul 29, 2026 20:51	anboto1	CPPg++14.2.0	Success	3,340
Jul 29, 2026 20:47	anboto1	CPPg++14.2.0	Success	3,383
Jul 29, 2026 20:47	anboto1	CPPg++10.5.0	Success	3,329
Jul 29, 2026 20:45	anboto1	CPPg++14.2.0	Success	3,675
Jul 29, 2026 20:41	anboto1	CPPg++10.5.0	Success	3,926
Jul 29, 2026 20:39	anboto1	CPPg++14.2.0	Success	5,523
Jul 29, 2026 20:36	anboto1	CPPg++14.2.0	Success	3,531
Jul 29, 2026 20:34	anboto1	CPPg++14.2.0	Success	3,908
Jul 29, 2026 20:33	anboto1	CPPg++14.2.0	Success	4,611
Jul 29, 2026 20:31	anboto1	CPPg++10.5.0	Success	3,453
Jul 29, 2026 20:29	anboto1	CPPg++10.5.0	Success	4,416
Jul 29, 2026 20:28	anboto1	CPPg++14.2.0	Success	4,988
Jul 29, 2026 20:24	anboto1	CPPg++14.2.0	Success	3,901
Jul 29, 2026 20:20	anboto1	CPPg++14.2.0	Success	5,231
Jul 29, 2026 20:20	anboto1	CPPg++10.5.0	Success	5,536
Jul 29, 2026 20:19	anboto1	CPPg++10.5.0	Success	19,788
Jul 29, 2026 20:12	anboto1	CPPg++14.2.0	Error
Jul 29, 2026 20:11	anboto1	CPPg++10.5.0	Success	22,499
Jul 29, 2026 20:09	anboto1	CPPg++10.5.0	Success	15,415
Jul 29, 2026 20:00	anboto1	CPPg++10.5.0	Success	24,109
Jul 29, 2026 19:24	anboto1	CPPg++14.2.0	Success	23,520
Jul 29, 2026 19:18	anboto1	CPPclang++19.1.1	Success	2,505
Jul 29, 2026 19:14	anboto1	CPPg++14.2.0	Success	2,840
Jul 29, 2026 19:11	anboto1	CPPg++14.2.0	Success	2,847
Jul 29, 2026 19:06	anboto1	CPPg++14.2.0	Success	2,735
Jul 29, 2026 19:03	anboto1	CPPg++14.2.0	Success	2,789
Jul 29, 2026 18:58	anboto1	CPPg++14.2.0	Success	2,846
Jul 29, 2026 18:56	anboto1	CPPg++14.2.0	Success	2,720
Jul 29, 2026 18:51	anboto1	CPPg++14.2.0	Success	2,792
Jul 29, 2026 18:48	anboto1	CPPg++14.2.0	Success	2,852
Jul 29, 2026 18:47	anboto1	CPPclang++19.1.1	Success	2,504+20.63 RP
Jul 29, 2026 18:46	anboto1	CPPg++14.2.0	Success	2,719
Jul 29, 2026 18:40	anboto1	CPPg++14.2.0	Success	2,893
Jul 29, 2026 18:37	anboto1	CPPclang++18.1.3	Success	2,535
Jul 29, 2026 18:33	anboto1	CPPg++14.2.0	Success	2,780
Jul 29, 2026 18:32	anboto1	CPPg++14.2.0	Success	2,801
Jul 29, 2026 18:28	anboto1	CPPclang++19.1.1	Success	2,517+3.15 RP
Jul 29, 2026 18:27	anboto1	CPPg++14.2.0	Success	2,948
Jul 29, 2026 18:23	anboto1	CPPg++14.2.0	Success	2,863
Jul 29, 2026 18:21	anboto1	CPPclang++20.1.2	Success	2,519+46.72 RP
Jul 29, 2026 18:20	anboto1	CPPg++14.2.0	Success	2,884
Jul 29, 2026 18:20	anboto1	CPPg++14.2.0	Success	2,759
Jul 29, 2026 18:15	anboto1	CPPg++14.2.0	Success	2,838
Jul 29, 2026 18:14	anboto1	CPPg++14.2.0	Success	2,864
Jul 29, 2026 18:07	anboto1	CPPg++14.2.0	Success	2,793
Jul 29, 2026 18:04	anboto1	CPPg++14.2.0	Success	3,013
Jul 29, 2026 18:03	anboto1	CPPg++14.2.0	Success	2,549+65.08 RP
Jul 29, 2026 18:03	anboto1	CPPg++14.2.0	Success	2,746
Jul 29, 2026 17:57	anboto1	CPPg++14.2.0	Success	2,868
Jul 29, 2026 17:55	anboto1	CPPg++14.2.0	Success	2,601
Jul 29, 2026 17:54	anboto1	CPPg++14.2.0	Success	2,992
Jul 29, 2026 17:48	anboto1	CPPg++10.5.0	Success	3,017
Jul 29, 2026 17:47	anboto1	CPPg++14.2.0	Success	2,779
Jul 29, 2026 17:44	anboto1	CPPg++14.2.0	Success	2,592+4.46 RP
Jul 29, 2026 17:39	anboto1	CPPg++14.2.0	Success	2,889
Jul 29, 2026 17:35	anboto1	CPPg++14.2.0	Success	3,429
Jul 29, 2026 17:33	anboto1	CPPg++14.2.0	Success	2,746
Jul 29, 2026 17:31	anboto1	CPPg++14.2.0	Success	2,905
Jul 29, 2026 17:27	anboto1	CPPg++14.2.0	Success	2,605
Jul 29, 2026 17:26	anboto1	CPPg++14.2.0	Success	2,883
Jul 29, 2026 17:25	anboto1	CPPg++14.2.0	Success	2,765
Jul 29, 2026 17:20	anboto1	CPPg++14.2.0	Success	3,050
Jul 29, 2026 17:18	anboto1	CPPg++14.2.0	Success	2,858
Jul 29, 2026 17:15	anboto1	CPPg++14.2.0	Success	2,595+203.93 RP
Jul 29, 2026 17:12	anboto1	CPPg++14.2.0	Error
Jul 29, 2026 17:12	anboto1	CPPclang++18.1.3	Success	2,834
Jul 29, 2026 17:11	anboto1	CPPg++14.2.0	Success	2,920
Jul 29, 2026 17:08	anboto1	CPPg++14.2.0	Success	2,950
Jul 29, 2026 17:03	anboto1	CPPg++14.2.0	Success	3,007
Jul 29, 2026 17:01	anboto1	CPPg++14.2.0	Success	2,740+76.93 RP
Jul 29, 2026 16:59	anboto1	CPPg++14.2.0	Success	2,903
Jul 29, 2026 16:58	anboto1	CPPg++14.2.0	Success	2,799+1.28 RP
Jul 29, 2026 16:51	anboto1	CPPg++14.2.0	Success	2,800+2.55 RP
Jul 29, 2026 16:50	anboto1	CPPg++14.2.0	Success	3,380
Jul 29, 2026 16:49	anboto1	CPPg++14.2.0	Success	3,004
Jul 29, 2026 16:43	anboto1	CPPg++14.2.0	Success	3,039
Jul 29, 2026 16:38	anboto1	CPPg++14.2.0	Success	3,521
Jul 29, 2026 16:34	anboto1	CPPg++14.2.0	Success	3,255
Jul 29, 2026 16:34	anboto1	CPPg++14.2.0	Success	2,802+143.05 RP
Jul 29, 2026 16:28	anboto1	CPPg++14.2.0	Success	3,071
Jul 29, 2026 16:22	anboto1	CPPclang++18.1.3	Success	3,027
Jul 29, 2026 16:18	anboto1	CPPg++14.2.0	Success	2,932
Jul 29, 2026 16:16	anboto1	CPPg++14.2.0	Success	3,372
Jul 29, 2026 16:15	anboto1	CPPg++10.5.0	Success	3,855
Jul 29, 2026 16:11	anboto1	CPPg++14.2.0	Success	3,937
Jul 29, 2026 16:07	anboto1	CPPg++14.2.0	Success	3,031
Jul 29, 2026 16:05	anboto1	CPPg++14.2.0	Success	2,975
Jul 29, 2026 15:57	anboto1	CPPg++14.2.0	Success	3,347
Jul 29, 2026 15:56	anboto1	CPPg++14.2.0	Success	5,351
Jul 29, 2026 15:55	anboto1	CPPg++10.5.0	Success	4,008
Jul 29, 2026 15:54	anboto1	CPPg++14.2.0	Success	3,146
Jul 29, 2026 15:51	anboto1	CPPg++10.5.0	Success	3,439
Jul 29, 2026 15:48	anboto1	CPPg++14.2.0	Success	3,437
Jul 29, 2026 15:42	anboto1	CPPg++14.2.0	Success	3,909
Jul 29, 2026 15:42	anboto1	CPPclang++20.1.2	Success	2,951
Jul 29, 2026 15:42	anboto1	CPPg++14.2.0	Success	2,919+3.52 RP

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