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	Apr 27, 2024 12:51	53,889	330,206,783	264,056,968	0	2,277,376
2	Apr 27, 2024 13:03	53,897	336,899,860	264,097,733	0	2,285,568
3	Apr 27, 2024 13:05	53,989	336,631,468	264,545,157	0	2,281,472
4	Apr 27, 2024 12:51	53,997	339,582,489	264,586,603	0	2,273,280
5	Apr 27, 2024 12:51	54,001	335,634,255	264,605,384	0	2,281,472
6	Apr 27, 2024 13:03	54,025	333,336,061	264,721,341	0	2,273,280
7	Apr 27, 2024 13:03	54,035	325,489,765	264,771,698	0	2,277,376
8	Apr 27, 2024 13:05	54,050	334,211,343	264,843,014	0	2,273,280
9	Apr 27, 2024 13:05	56,164	346,913,409	275,205,246	0	2,273,280
10	Apr 27, 2024 13:05	57,491	306,908,901	278,708,000	2,996,000	2,281,472
11	Apr 27, 2024 13:05	58,186	309,343,631	283,109,000	2,000,000	2,289,664
12	Apr 27, 2024 13:03	58,188	313,180,865	282,119,000	3,001,000	2,273,280
13	Apr 27, 2024 13:03	58,210	308,414,770	282,229,000	3,002,000	2,273,280
14	Apr 27, 2024 13:03	58,224	308,275,272	284,299,000	1,001,000	2,289,664
15	Apr 27, 2024 13:05	58,275	317,995,830	283,544,000	2,003,000	2,523,136
16	Apr 27, 2024 13:05	58,286	309,234,294	282,607,000	2,995,000	2,355,200
17	Apr 27, 2024 12:51	58,310	307,454,654	283,719,000	1,998,000	2,285,568
18	Apr 27, 2024 12:51	58,376	309,660,587	283,043,000	3,000,000	2,285,568
19	Apr 27, 2024 12:51	58,381	308,623,616	283,066,000	3,000,000	2,285,568
20	Apr 27, 2024 13:05	58,474	342,510,882	286,524,728	0	2,281,472
21	Apr 27, 2024 12:51	58,735	312,158,780	284,803,000	2,997,000	2,269,184
22	Apr 27, 2024 12:51	58,750	310,280,283	284,877,000	2,998,000	2,285,568
23	Apr 27, 2024 13:05	58,823	313,177,461	286,230,000	2,001,000	2,531,328
24	Apr 27, 2024 13:03	58,974	311,686,860	285,976,000	2,999,000	2,281,472
25	Apr 27, 2024 13:05	58,982	311,633,145	286,011,000	3,000,000	2,289,664
26	Apr 27, 2024 13:03	58,988	311,633,641	286,043,000	3,000,000	2,289,664
27	Apr 27, 2024 13:05	58,993	313,500,770	287,064,000	2,000,000	2,289,664
28	Apr 27, 2024 13:05	58,995	316,116,669	287,074,000	2,000,000	2,289,664
29	Apr 27, 2024 13:03	59,014	316,667,794	286,168,000	3,001,000	2,289,664
30	Apr 27, 2024 13:05	59,244	313,831,414	288,295,000	2,002,000	2,289,664
31	Apr 27, 2024 13:05	59,453	317,629,772	290,318,000	1,001,000	2,289,664
32	Apr 27, 2024 13:05	59,489	318,694,064	290,494,000	1,001,000	2,527,232
33	Apr 27, 2024 13:05	59,600	320,381,133	289,038,000	3,000,000	2,281,472
34	Apr 27, 2024 13:05	59,707	316,308,181	289,569,000	2,995,000	2,289,664
35	Apr 27, 2024 13:05	60,290	326,142,097	293,420,000	2,002,000	2,531,328
36	Apr 27, 2024 12:51	60,441	324,454,960	294,158,000	2,001,000	2,527,232
37	Apr 27, 2024 12:51	60,444	324,736,145	293,173,000	3,001,000	2,285,568
38	Apr 27, 2024 12:51	60,543	330,415,170	296,662,000	0	2,285,568
39	Apr 27, 2024 13:05	60,635	320,541,144	295,113,000	2,000,000	2,531,328
40	Apr 27, 2024 13:03	60,655	330,935,924	295,210,000	2,001,000	2,265,088
41	Apr 27, 2024 13:03	60,685	322,039,721	294,353,000	3,003,000	2,289,664
42	Apr 27, 2024 13:05	60,776	324,231,006	294,803,000	2,997,000	2,289,664
43	Apr 27, 2024 13:05	62,884	336,921,794	305,132,000	3,001,000	2,265,088
44	Apr 27, 2024 13:05	64,037	375,495,977	313,781,458	0	2,277,376
45	Apr 27, 2024 12:51	66,476	349,024,746	323,736,000	1,998,000	2,527,232
46	Apr 27, 2024 13:05	69,745	371,413,165	338,752,000	2,997,000	2,289,664
47	Apr 27, 2024 13:03	82,383	435,651,793	400,682,000	2,997,000	2,289,664
48	Apr 27, 2024 13:05	184,521	975,012,718	904,153,411	0	2,281,472

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