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	Jan 4, 2024 14:10	71,368	419,688,053	349,701,480	0	2,256,896
2	Jan 4, 2024 14:10	71,372	408,276,336	349,721,591	0	2,273,280
3	Jan 4, 2024 14:01	71,389	414,031,769	349,805,720	0	2,273,280
4	Jan 4, 2024 14:00	71,393	413,506,182	349,827,596	0	2,281,472
5	Jan 4, 2024 14:01	71,405	407,541,429	349,883,567	0	2,273,280
6	Jan 4, 2024 13:59	71,406	410,957,285	349,889,574	0	2,277,376
7	Jan 4, 2024 13:59	71,414	405,555,465	349,928,523	0	2,277,376
8	Jan 4, 2024 14:01	71,425	413,495,116	349,980,389	0	2,277,376
9	Jan 4, 2024 14:10	71,461	411,405,168	350,160,696	0	2,273,280
10	Jan 4, 2024 14:00	71,489	418,769,674	350,298,069	0	2,252,800
11	Jan 4, 2024 14:00	71,530	420,266,016	350,497,139	0	2,273,280
12	Jan 4, 2024 13:59	71,672	421,875,147	351,190,676	0	2,269,184
13	Jan 4, 2024 14:10	74,967	396,596,060	366,336,000	1,000,000	2,375,680
14	Jan 4, 2024 14:00	74,989	393,849,954	365,445,000	2,002,000	2,285,568
15	Jan 4, 2024 14:10	74,992	397,767,689	365,459,000	2,002,000	2,527,232
16	Jan 4, 2024 14:00	74,998	392,603,371	364,497,000	2,995,000	2,285,568
17	Jan 4, 2024 14:01	75,015	396,999,045	364,577,000	2,996,000	2,285,568
18	Jan 4, 2024 14:10	75,030	393,247,237	364,651,000	2,997,000	2,285,568
19	Jan 4, 2024 14:00	75,030	394,555,606	364,648,000	2,997,000	2,379,776
20	Jan 4, 2024 14:01	75,032	388,982,165	365,653,000	2,003,000	2,375,680
21	Jan 4, 2024 14:10	75,036	392,867,373	364,680,000	2,997,000	2,269,184
22	Jan 4, 2024 14:10	75,045	391,025,326	364,724,000	2,997,000	2,285,568
23	Jan 4, 2024 14:00	75,048	395,330,689	364,736,000	2,997,000	2,285,568
24	Jan 4, 2024 13:59	75,049	393,059,651	364,744,000	2,997,000	2,527,232
25	Jan 4, 2024 13:59	75,050	395,915,934	365,748,000	1,998,000	2,281,472
26	Jan 4, 2024 13:59	75,060	392,579,578	364,797,000	2,998,000	2,285,568
27	Jan 4, 2024 14:01	75,060	393,580,052	364,794,000	2,998,000	2,285,568
28	Jan 4, 2024 14:00	75,067	394,150,686	364,832,000	2,998,000	2,285,568
29	Jan 4, 2024 13:59	75,074	390,071,526	365,864,000	1,999,000	2,527,232
30	Jan 4, 2024 13:59	75,075	392,315,635	364,868,000	2,998,000	2,285,568
31	Jan 4, 2024 14:01	75,076	390,302,777	364,876,000	2,998,000	2,285,568
32	Jan 4, 2024 14:01	75,079	394,000,416	365,890,000	1,999,000	2,527,232
33	Jan 4, 2024 13:59	75,092	396,732,360	364,951,000	2,999,000	2,523,136
34	Jan 4, 2024 13:59	75,104	395,394,498	365,011,000	3,000,000	2,285,568
35	Jan 4, 2024 13:59	75,113	390,404,557	365,052,000	3,000,000	2,531,328
36	Jan 4, 2024 14:00	75,124	391,649,963	365,110,000	3,000,000	2,514,944
37	Jan 4, 2024 14:01	75,126	394,498,354	365,115,000	3,000,000	2,285,568
38	Jan 4, 2024 14:01	75,138	396,334,599	366,174,000	2,000,000	2,527,232
39	Jan 4, 2024 14:01	75,144	393,826,877	366,206,000	2,001,000	2,535,424
40	Jan 4, 2024 14:00	75,192	396,329,050	367,439,000	1,001,000	2,531,328
41	Jan 4, 2024 14:00	75,934	399,591,458	369,078,000	3,000,000	2,523,136
42	Jan 4, 2024 14:10	76,873	400,158,845	373,679,000	2,997,000	2,285,568
43	Jan 4, 2024 14:01	76,879	399,874,067	374,710,000	1,998,000	2,527,232
44	Jan 4, 2024 14:00	76,905	402,459,447	373,836,000	2,998,000	2,285,568
45	Jan 4, 2024 14:10	76,951	400,459,224	376,058,000	1,000,000	2,535,424
46	Jan 4, 2024 13:59	76,963	400,340,796	374,117,000	3,000,000	2,527,232
47	Jan 4, 2024 14:10	76,964	399,756,977	375,126,000	2,000,000	2,285,568
48	Jan 4, 2024 14:10	79,287	414,595,012	387,505,000	1,001,000	2,514,944

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