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.

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Oct 4, 2022 11:58	52,901	319,900,958	259,214,469	0	2,183,168
2	Oct 4, 2022 12:00	52,912	339,278,959	259,266,935	0	2,183,168
3	Oct 4, 2022 12:18	52,914	332,817,011	259,279,591	0	2,187,264
4	Oct 4, 2022 12:00	52,917	332,783,104	259,295,425	0	2,187,264
5	Oct 4, 2022 11:58	52,935	325,214,916	259,382,726	0	2,191,360
6	Oct 4, 2022 11:58	52,948	322,705,380	259,443,938	0	2,174,976
7	Oct 4, 2022 12:18	52,953	327,610,962	259,468,303	0	2,179,072
8	Oct 4, 2022 12:19	52,966	327,777,990	259,534,713	0	2,174,976
9	Oct 4, 2022 12:00	52,977	318,181,245	259,586,422	0	2,179,072
10	Oct 4, 2022 12:25	52,988	318,476,628	259,640,990	0	2,174,976
11	Oct 4, 2022 12:25	52,989	333,244,929	259,646,744	0	2,174,976
12	Oct 4, 2022 12:19	53,040	325,231,015	259,898,024	0	2,183,168
13	Oct 4, 2022 12:18	53,105	326,262,585	260,213,124	0	2,183,168
14	Oct 4, 2022 12:25	54,392	319,276,210	266,520,013	0	2,187,264
15	Oct 4, 2022 12:19	54,554	342,359,446	267,313,092	0	2,179,072
16	Oct 4, 2022 12:00	55,351	298,548,404	270,221,000	1,000,000	2,441,216
17	Oct 4, 2022 12:00	55,361	290,108,196	270,267,000	1,000,000	2,269,184
18	Oct 4, 2022 12:19	55,364	295,890,832	270,283,000	1,001,000	2,281,472
19	Oct 4, 2022 12:18	55,367	292,904,940	270,295,000	1,001,000	2,281,472
20	Oct 4, 2022 12:19	55,369	294,305,218	270,307,000	1,001,000	2,281,472
21	Oct 4, 2022 11:58	55,370	303,016,130	270,312,000	1,001,000	2,269,184
22	Oct 4, 2022 11:58	55,370	298,398,596	269,319,000	1,994,000	2,281,472
23	Oct 4, 2022 11:58	55,371	292,625,446	270,318,000	1,001,000	2,281,472
24	Oct 4, 2022 12:18	55,372	293,838,208	270,321,000	1,001,000	2,281,472
25	Oct 4, 2022 12:19	55,376	294,749,822	270,342,000	1,001,000	2,281,472
26	Oct 4, 2022 12:00	55,379	299,649,202	270,357,000	1,001,000	2,281,472
27	Oct 4, 2022 12:25	55,379	294,274,783	270,356,000	1,001,000	2,445,312
28	Oct 4, 2022 11:58	55,379	302,301,018	270,355,000	1,001,000	2,281,472
29	Oct 4, 2022 12:25	55,380	295,923,406	270,359,000	1,001,000	2,281,472
30	Oct 4, 2022 12:19	55,381	293,220,272	270,366,000	1,001,000	2,449,408
31	Oct 4, 2022 11:58	55,383	292,772,571	270,374,000	1,001,000	2,281,472
32	Oct 4, 2022 12:00	55,389	294,953,405	269,413,000	1,995,000	2,441,216
33	Oct 4, 2022 12:25	55,392	297,720,490	270,419,000	1,001,000	2,449,408
34	Oct 4, 2022 11:58	55,396	299,772,278	270,438,000	1,001,000	2,281,472
35	Oct 4, 2022 12:18	55,397	298,038,086	270,444,000	1,001,000	2,281,472
36	Oct 4, 2022 12:25	55,398	303,950,506	271,451,000	0	2,281,472
37	Oct 4, 2022 12:18	55,402	294,906,876	270,467,000	1,001,000	2,445,312
38	Oct 4, 2022 12:25	55,402	302,479,307	270,467,000	1,001,000	2,281,472
39	Oct 4, 2022 12:25	55,402	299,664,581	271,468,000	0	2,281,472
40	Oct 4, 2022 12:18	55,409	302,588,948	270,503,000	1,001,000	2,449,408
41	Oct 4, 2022 11:58	55,411	298,113,322	270,511,000	1,001,000	2,281,472
42	Oct 4, 2022 12:00	55,418	292,864,100	269,553,000	1,996,000	2,445,312
43	Oct 4, 2022 12:19	55,422	300,667,424	269,570,000	1,996,000	2,281,472
44	Oct 4, 2022 12:19	55,440	291,586,823	269,658,000	1,997,000	2,449,408
45	Oct 4, 2022 12:18	55,440	298,815,767	269,661,000	1,997,000	2,281,472
46	Oct 4, 2022 12:19	55,442	298,749,802	269,671,000	1,997,000	2,281,472
47	Oct 4, 2022 11:58	55,446	302,106,941	269,688,000	1,997,000	2,281,472
48	Oct 4, 2022 12:18	55,447	294,816,208	269,691,000	1,997,000	2,281,472
49	Oct 4, 2022 12:25	55,457	297,615,195	269,739,000	1,998,000	2,445,312
50	Oct 4, 2022 12:19	55,458	296,974,866	269,748,000	1,998,000	2,445,312
51	Oct 4, 2022 11:58	55,469	292,033,705	269,801,000	1,998,000	2,441,216
52	Oct 4, 2022 12:18	55,607	293,853,577	271,472,000	1,001,000	2,281,472
53	Oct 4, 2022 12:00	55,757	292,928,724	272,209,000	1,000,000	2,281,472
54	Oct 4, 2022 12:25	55,825	297,892,919	271,545,000	1,996,000	2,449,408
55	Oct 4, 2022 12:00	55,852	302,685,700	271,677,000	1,997,000	2,445,312
56	Oct 4, 2022 12:18	55,855	299,478,085	271,693,000	1,997,000	2,441,216
57	Oct 4, 2022 12:00	55,862	301,628,611	271,727,000	1,997,000	2,441,216
58	Oct 4, 2022 12:00	55,900	295,966,052	271,911,000	1,999,000	2,445,312
59	Oct 4, 2022 12:25	55,904	292,197,462	271,931,000	1,999,000	2,441,216
60	Oct 4, 2022 12:19	55,909	294,992,693	271,955,000	1,999,000	2,281,472

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