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	Jun 15, 2024 14:44	52,127	328,862,169	255,422,015	0	2,240,512
2	Jun 15, 2024 14:45	52,132	326,346,787	255,447,643	0	2,236,416
3	Jun 15, 2024 14:44	52,138	326,683,601	255,476,596	0	2,375,680
4	Jun 15, 2024 14:44	52,139	320,400,382	255,478,899	0	2,236,416
5	Jun 15, 2024 14:45	52,141	322,182,604	255,492,429	0	2,236,416
6	Jun 15, 2024 14:45	52,145	326,276,094	255,508,097	0	2,232,320
7	Jun 15, 2024 14:44	52,147	331,643,723	255,518,226	0	2,236,416
8	Jun 15, 2024 14:44	52,150	331,298,513	255,535,331	0	2,224,128
9	Jun 15, 2024 14:44	52,444	318,406,293	256,977,711	0	2,224,128
10	Jun 15, 2024 14:44	53,329	327,082,365	261,314,256	0	2,228,224
11	Jun 15, 2024 14:44	53,825	328,673,104	263,740,173	0	2,240,512
12	Jun 15, 2024 14:44	54,361	339,975,468	266,370,751	0	2,248,704
13	Jun 15, 2024 14:45	56,385	303,240,960	274,285,000	2,002,000	2,334,720
14	Jun 15, 2024 14:44	56,429	303,671,089	274,497,000	2,003,000	2,498,560
15	Jun 15, 2024 14:44	56,433	304,956,918	274,517,000	2,003,000	2,490,368
16	Jun 15, 2024 14:44	56,433	309,117,901	274,521,000	2,003,000	2,478,080
17	Jun 15, 2024 14:45	56,434	307,960,586	275,527,000	1,001,000	2,289,664
18	Jun 15, 2024 14:44	56,436	302,653,481	274,532,000	2,003,000	2,494,464
19	Jun 15, 2024 14:44	56,437	306,557,184	275,538,000	1,001,000	2,289,664
20	Jun 15, 2024 14:44	56,452	301,787,786	273,619,000	2,995,000	2,285,568
21	Jun 15, 2024 14:44	56,464	307,129,656	274,676,000	1,997,000	2,289,664
22	Jun 15, 2024 14:44	56,466	306,001,839	273,688,000	2,996,000	2,498,560
23	Jun 15, 2024 14:44	56,466	302,529,172	273,686,000	2,996,000	2,490,368
24	Jun 15, 2024 14:44	56,467	302,628,514	273,694,000	2,996,000	2,281,472
25	Jun 15, 2024 14:44	56,468	298,574,512	274,698,000	1,997,000	2,486,272
26	Jun 15, 2024 14:44	56,468	308,095,798	273,699,000	2,996,000	2,289,664
27	Jun 15, 2024 14:44	56,468	299,721,161	274,694,000	1,997,000	2,322,432
28	Jun 15, 2024 14:45	56,470	298,344,696	274,704,000	1,997,000	2,490,368
29	Jun 15, 2024 14:45	56,470	301,898,299	273,709,000	2,996,000	2,490,368
30	Jun 15, 2024 14:44	56,470	303,428,918	273,706,000	2,996,000	2,490,368
31	Jun 15, 2024 14:44	56,473	308,269,695	274,723,000	1,997,000	2,293,760
32	Jun 15, 2024 14:45	56,474	303,092,703	273,727,000	2,997,000	2,289,664
33	Jun 15, 2024 14:45	56,475	305,339,005	275,729,000	999,000	2,289,664
34	Jun 15, 2024 14:44	56,475	306,658,849	274,731,000	1,998,000	2,289,664
35	Jun 15, 2024 14:44	56,479	301,704,046	274,747,000	1,998,000	2,289,664
36	Jun 15, 2024 14:44	56,480	299,464,830	273,754,000	2,997,000	2,338,816
37	Jun 15, 2024 14:44	56,480	304,610,023	273,753,000	2,997,000	2,281,472
38	Jun 15, 2024 14:44	56,504	300,241,748	274,870,000	1,999,000	2,318,336
39	Jun 15, 2024 14:44	56,904	303,920,128	275,831,000	2,998,000	2,281,472
40	Jun 15, 2024 14:45	56,948	301,809,745	276,044,000	3,000,000	2,285,568
41	Jun 15, 2024 14:44	56,969	301,544,964	276,148,000	3,001,000	2,498,560
42	Jun 15, 2024 14:44	57,086	312,781,460	277,723,000	1,998,000	2,494,464
43	Jun 15, 2024 14:44	57,425	303,737,985	279,381,000	2,002,000	2,502,656
44	Jun 15, 2024 14:45	57,429	308,487,636	279,400,000	2,002,000	2,510,848
45	Jun 15, 2024 14:44	57,781	305,242,470	280,126,000	3,001,000	2,281,472
46	Jun 15, 2024 14:44	58,273	317,150,430	283,537,000	2,003,000	2,486,272
47	Jun 15, 2024 14:45	58,393	308,825,169	283,123,000	3,001,000	2,285,568
48	Jun 15, 2024 14:44	58,480	312,782,813	285,550,000	1,001,000	2,519,040

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