Large integer multiplication

Multiply two large unsigned integers as fast as possible.

Input

Exactly 500,000 bytes on STDIN: two unsigned integers encoded back-to-back, each 250,000 bytes, in little-endian byte order.

Output

Write exactly 500,000 bytes to STDOUT containing the product in little-endian byte order.

Restrictions:600s256Mb 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.

Back to listJul 12, 2023 17:17

Bernard TeoScore: 35,248Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jul 12, 2023 17:15	35,044	110,742,111	87,609,000	0	2,347,008
2	Jul 12, 2023 17:17	35,048	117,754,156	87,619,000	0	2,314,240
3	Jul 12, 2023 17:17	35,053	111,907,576	87,633,000	0	2,314,240
4	Jul 11, 2023 17:40	35,067	111,577,123	86,660,000	1,007,000	2,519,040
5	Jul 12, 2023 17:15	35,068	120,870,883	86,664,000	1,007,000	2,330,624
6	Jul 12, 2023 17:14	35,073	120,753,166	87,683,000	0	2,330,624
7	Jul 11, 2023 17:40	35,074	115,091,488	86,677,000	1,007,000	2,314,240
8	Jul 11, 2023 17:40	35,076	115,496,357	87,689,000	0	2,396,160
9	Jul 11, 2023 17:40	35,081	110,627,399	85,709,000	1,993,000	2,330,624
10	Jul 11, 2023 17:40	35,085	117,840,740	86,705,000	1,008,000	2,396,160
11	Jul 11, 2023 17:40	35,092	117,668,018	86,723,000	1,008,000	2,330,624
12	Jul 12, 2023 17:14	35,098	114,784,530	87,745,000	0	2,510,848
13	Jul 12, 2023 17:14	35,101	113,125,677	87,753,000	0	2,297,856
14	Jul 12, 2023 17:14	35,108	113,582,525	86,763,000	1,008,000	2,330,624
15	Jul 12, 2023 17:17	35,140	112,557,281	86,852,000	998,000	2,412,544
16	Jul 11, 2023 17:40	35,148	118,889,785	84,876,000	2,995,000	2,347,008
17	Jul 12, 2023 17:15	35,152	113,652,591	87,881,000	0	2,396,160
18	Jul 12, 2023 17:14	35,152	117,401,649	87,880,000	0	2,297,856
19	Jul 12, 2023 17:15	35,156	115,156,833	85,893,000	1,997,000	2,396,160
20	Jul 12, 2023 17:15	35,156	120,275,553	85,893,000	1,997,000	2,330,624
21	Jul 12, 2023 17:14	35,174	110,261,875	85,938,000	1,998,000	2,314,240
22	Jul 12, 2023 17:15	35,221	110,045,377	86,052,000	2,001,000	2,285,568
23	Jul 12, 2023 17:17	35,238	109,786,407	87,094,000	1,001,000	2,510,848
24	Jul 11, 2023 17:40	35,244	109,554,282	86,108,000	2,002,000	2,330,624
25	Jul 11, 2023 17:40	35,248	112,117,261	87,119,000	1,001,000	2,297,856
26	Jul 12, 2023 17:15	35,254	111,720,943	86,133,000	2,003,000	2,396,160
27	Jul 12, 2023 17:14	35,269	120,885,189	87,172,000	1,001,000	2,396,160
28	Jul 12, 2023 17:17	35,271	116,024,912	87,176,000	1,002,000	2,400,256
29	Jul 12, 2023 17:15	35,324	111,656,509	88,309,000	0	2,330,624
30	Jul 12, 2023 17:14	35,350	114,289,770	88,376,000	0	2,396,160
31	Jul 12, 2023 17:17	35,429	110,093,887	88,573,000	0	2,408,448
32	Jul 12, 2023 17:17	35,802	114,567,176	88,500,000	1,005,000	2,396,160
33	Jul 12, 2023 17:17	35,886	116,501,433	88,708,000	1,008,000	2,396,160
34	Jul 12, 2023 17:17	35,896	116,414,889	89,741,000	0	2,330,624
35	Jul 12, 2023 17:15	36,118	122,412,434	88,290,000	2,006,000	2,392,064
36	Jul 12, 2023 17:14	36,135	118,182,607	89,335,000	1,003,000	2,277,376
37	Jul 12, 2023 17:15	37,088	155,962,034	92,718,940	0	2,252,800
38	Jul 12, 2023 17:14	37,103	152,817,766	92,758,029	0	2,252,800
39	Jul 12, 2023 17:17	37,112	154,349,213	92,779,923	0	2,256,896
40	Jul 11, 2023 17:40	37,115	151,709,046	92,787,498	0	2,248,704
41	Jul 12, 2023 17:17	37,118	154,190,907	92,793,929	0	2,252,800
42	Jul 12, 2023 17:15	37,139	161,948,886	92,847,067	0	2,244,608
43	Jul 12, 2023 17:14	37,199	158,310,834	92,996,767	0	2,252,800
44	Jul 12, 2023 17:14	37,204	165,254,286	93,009,147	0	2,256,896
45	Jul 11, 2023 17:40	37,314	157,827,123	93,283,825	0	2,244,608
46	Jul 11, 2023 17:40	37,611	156,579,134	94,026,357	0	2,248,704
47	Jul 12, 2023 17:17	37,991	164,592,791	94,977,882	0	2,256,896
48	Jul 12, 2023 17:15	38,107	155,227,411	95,267,848	0	2,252,800

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