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 21, 2022 23:11

Robert BurkeScore: 73,678Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jul 21, 2022 23:13	70,303	417,552,660	344,486,062	0	2,289,664
2	Jul 21, 2022 23:10	70,306	402,749,676	344,499,477	0	2,289,664
3	Jul 21, 2022 23:10	70,328	414,897,631	344,605,842	0	2,289,664
4	Jul 21, 2022 23:11	70,335	408,571,550	344,641,972	0	2,293,760
5	Jul 21, 2022 23:13	70,340	405,002,054	344,668,039	0	2,293,760
6	Jul 21, 2022 23:11	70,342	405,490,202	344,677,578	0	2,285,568
7	Jul 21, 2022 23:13	70,367	396,104,370	344,797,077	0	2,293,760
8	Jul 21, 2022 23:11	70,734	400,867,333	346,597,290	0	2,297,856
9	Jul 21, 2022 23:10	70,976	406,298,104	347,782,224	0	2,289,664
10	Jul 21, 2022 23:13	73,651	379,086,557	359,892,000	999,000	2,281,472
11	Jul 21, 2022 23:10	73,657	387,383,638	359,921,000	999,000	2,424,832
12	Jul 21, 2022 23:10	73,661	388,386,020	359,940,000	999,000	2,428,928
13	Jul 21, 2022 23:13	73,662	381,142,077	357,946,000	2,999,000	2,281,472
14	Jul 21, 2022 23:13	73,664	383,885,916	359,955,000	999,000	2,281,472
15	Jul 21, 2022 23:10	73,666	384,406,687	360,965,000	0	2,281,472
16	Jul 21, 2022 23:13	73,670	384,064,384	360,982,000	0	2,281,472
17	Jul 21, 2022 23:11	73,673	381,878,398	360,000,000	1,000,000	2,433,024
18	Jul 21, 2022 23:10	73,675	382,687,978	359,007,000	2,000,000	2,428,928
19	Jul 21, 2022 23:13	73,678	380,013,307	361,022,000	0	2,424,832
20	Jul 21, 2022 23:10	73,678	382,289,562	360,021,000	1,000,000	2,428,928
21	Jul 21, 2022 23:11	73,686	382,634,839	360,063,000	1,000,000	2,514,944
22	Jul 21, 2022 23:11	73,687	384,835,337	361,068,000	0	2,281,472
23	Jul 21, 2022 23:10	73,699	384,086,754	361,124,000	0	2,428,928
24	Jul 21, 2022 23:11	73,704	388,238,187	361,151,000	0	2,281,472
25	Jul 21, 2022 23:11	73,709	384,127,800	360,172,000	1,000,000	2,281,472
26	Jul 21, 2022 23:11	73,712	383,813,326	359,190,000	2,001,000	2,281,472
27	Jul 21, 2022 23:10	73,750	386,851,886	359,379,000	1,996,000	2,424,832
28	Jul 21, 2022 23:11	73,762	387,687,496	361,434,000	0	2,281,472
29	Jul 21, 2022 23:13	73,763	387,595,600	361,437,000	0	2,281,472
30	Jul 21, 2022 23:13	73,789	390,776,505	360,566,000	998,000	2,428,928
31	Jul 21, 2022 23:11	73,794	389,629,147	360,593,000	998,000	2,281,472
32	Jul 21, 2022 23:13	73,797	385,199,713	360,607,000	998,000	2,281,472
33	Jul 21, 2022 23:13	73,808	383,927,363	360,660,000	999,000	2,428,928
34	Jul 21, 2022 23:10	73,845	385,416,974	359,843,000	1,999,000	2,428,928
35	Jul 21, 2022 23:10	73,857	384,969,644	359,902,000	1,999,000	2,420,736
36	Jul 21, 2022 23:11	95,001	490,562,905	464,506,000	998,000	2,424,832

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