Format integers

Compute a checksum over the decimal representations of binary integers as fast as possible.

Input: 250 000 000 uint32 values in little-endian binary on STDIN (4 bytes each).

Output: A uint64 checksum computed as:

CRC = sum of number_crc(n) for each n

where number_crc(n) converts n to its decimal string and sums ascii(digit) * position over each digit (0-indexed from the left).

Example: For n = 42, the decimal string is "42", so number_crc(42) = ascii('4') * 0 + ascii('2') * 1 = 52 * 0 + 50 * 1 = 50.

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.

Back to listJul 20, 2022 13:32

Robert BurkeScore: 99,984Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jul 20, 2022 13:34	97,195	540,595,506	476,253,257	0	2,297,856
2	Jul 20, 2022 13:32	97,208	535,148,535	476,320,194	0	2,285,568
3	Jul 20, 2022 13:34	97,228	554,125,184	476,415,444	0	2,277,376
4	Jul 20, 2022 13:32	97,230	528,598,810	476,428,854	0	2,289,664
5	Jul 20, 2022 13:32	97,244	546,427,346	476,497,517	0	2,285,568
6	Jul 20, 2022 13:33	97,256	532,366,083	476,553,814	0	2,256,896
7	Jul 20, 2022 13:34	97,289	536,040,713	476,716,507	0	2,285,568
8	Jul 20, 2022 13:33	97,327	534,452,854	476,902,389	0	2,289,664
9	Jul 20, 2022 13:33	99,934	511,201,932	488,680,000	999,000	2,281,472
10	Jul 20, 2022 13:34	99,944	511,089,618	488,729,000	999,000	2,428,928
11	Jul 20, 2022 13:33	99,955	510,827,590	487,780,000	1,999,000	2,277,376
12	Jul 20, 2022 13:32	99,957	511,716,640	488,791,000	999,000	2,424,832
13	Jul 20, 2022 13:34	99,959	511,782,763	489,798,000	0	2,433,024
14	Jul 20, 2022 13:34	99,961	510,892,856	488,808,000	999,000	2,514,944
15	Jul 20, 2022 13:34	99,964	511,558,268	488,826,000	999,000	2,277,376
16	Jul 20, 2022 13:33	99,970	516,718,144	487,852,000	1,999,000	2,420,736
17	Jul 20, 2022 13:32	99,979	510,644,120	487,896,000	1,999,000	2,428,928
18	Jul 20, 2022 13:33	99,984	516,226,230	488,924,000	999,000	2,281,472
19	Jul 20, 2022 13:32	99,984	513,246,848	488,924,000	999,000	2,281,472
20	Jul 20, 2022 13:33	99,984	510,485,100	488,922,000	999,000	2,281,472
21	Jul 20, 2022 13:34	99,985	509,957,983	488,926,000	999,000	2,519,040
22	Jul 20, 2022 13:32	99,985	518,667,273	487,929,000	1,999,000	2,433,024
23	Jul 20, 2022 13:33	99,986	519,452,481	487,930,000	1,999,000	2,281,472
24	Jul 20, 2022 13:34	99,987	511,179,187	487,935,000	1,999,000	2,281,472
25	Jul 20, 2022 13:33	99,996	515,559,422	488,979,000	999,000	2,281,472
26	Jul 20, 2022 13:32	99,996	512,450,502	488,983,000	999,000	2,519,040
27	Jul 20, 2022 13:34	99,997	513,421,720	489,987,000	0	2,281,472
28	Jul 20, 2022 13:32	99,999	511,933,184	488,996,000	999,000	2,281,472
29	Jul 20, 2022 13:33	100,009	513,188,983	489,044,000	1,000,000	2,281,472
30	Jul 20, 2022 13:34	100,011	513,653,117	489,056,000	1,000,000	2,281,472
31	Jul 20, 2022 13:32	100,012	511,568,455	488,061,000	2,000,000	2,428,928
32	Jul 20, 2022 13:34	100,020	514,139,253	490,099,000	0	2,277,376
33	Jul 20, 2022 13:32	100,021	521,967,467	490,105,000	0	2,433,024
34	Jul 20, 2022 13:33	100,023	511,717,128	489,111,000	1,000,000	2,420,736
35	Jul 20, 2022 13:32	100,059	519,362,035	489,291,000	998,000	2,281,472
36	Jul 20, 2022 13:33	104,137	561,194,783	510,271,951	0	2,293,760

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