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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Bernard TeoScore: 71,465Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Sep 22, 2022 12:24	71,358	380,132,646	347,658,000	1,998,000	2,281,472
2	Sep 22, 2022 12:24	71,389	372,773,478	347,807,000	1,998,000	2,281,472
3	Sep 22, 2022 12:24	71,390	372,898,245	348,813,000	999,000	2,281,472
4	Sep 22, 2022 12:24	71,393	373,005,434	347,827,000	1,999,000	2,281,472
5	Sep 22, 2022 12:24	71,396	375,860,851	347,842,000	1,999,000	2,281,472
6	Sep 22, 2022 12:24	71,397	373,459,104	347,844,000	1,999,000	2,400,256
7	Sep 22, 2022 12:24	71,400	376,567,738	348,863,000	999,000	2,400,256
8	Sep 22, 2022 12:24	71,407	374,694,484	349,893,000	0	2,510,848
9	Sep 22, 2022 12:24	71,411	373,902,475	348,914,000	999,000	2,510,848
10	Sep 22, 2022 12:24	71,413	373,848,284	348,923,000	999,000	2,404,352
11	Sep 22, 2022 12:24	71,416	372,785,022	347,941,000	1,999,000	2,404,352
12	Sep 22, 2022 12:24	71,417	373,015,984	348,942,000	999,000	2,281,472
13	Sep 22, 2022 12:24	71,421	372,052,409	348,963,000	999,000	2,273,280
14	Sep 22, 2022 12:24	71,429	375,378,458	349,002,000	1,000,000	2,281,472
15	Sep 22, 2022 12:24	71,431	376,846,662	348,011,000	2,000,000	2,281,472
16	Sep 22, 2022 12:24	71,434	378,947,871	348,027,000	2,000,000	2,281,472
17	Sep 22, 2022 12:24	71,438	377,944,083	349,047,000	1,000,000	2,404,352
18	Sep 22, 2022 12:24	71,439	372,457,487	348,050,000	2,000,000	2,281,472
19	Sep 22, 2022 12:24	71,465	376,585,753	350,178,000	0	2,400,256
20	Sep 22, 2022 12:24	71,481	376,755,632	349,258,000	1,000,000	2,281,472
21	Sep 22, 2022 12:24	71,896	379,636,391	352,288,000	0	2,281,472
22	Sep 22, 2022 12:24	73,174	422,074,980	358,553,790	0	2,256,896
23	Sep 22, 2022 12:24	73,194	432,820,264	358,651,297	0	2,260,992
24	Sep 22, 2022 12:24	73,205	433,947,487	358,703,248	0	2,260,992
25	Sep 22, 2022 12:24	73,216	426,742,309	358,756,593	0	2,265,088
26	Sep 22, 2022 12:24	73,228	430,170,890	358,815,842	0	2,269,184
27	Sep 22, 2022 12:24	73,245	437,056,687	358,900,203	0	2,273,280
28	Sep 22, 2022 12:24	73,247	439,297,529	358,908,210	0	2,260,992
29	Sep 22, 2022 12:24	73,695	389,763,737	359,105,000	2,000,000	2,400,256
30	Sep 22, 2022 12:24	73,956	391,357,841	361,385,000	1,001,000	2,281,472
31	Sep 22, 2022 12:24	74,185	389,203,909	362,504,000	1,001,000	2,400,256
32	Sep 22, 2022 12:24	74,207	391,413,186	362,615,000	998,000	2,400,256
33	Sep 22, 2022 12:24	74,208	388,902,077	362,623,000	998,000	2,281,472
34	Sep 22, 2022 12:24	74,257	390,300,056	361,859,000	1,999,000	2,281,472
35	Sep 22, 2022 12:24	75,577	429,949,067	370,328,268	0	2,256,896
36	Sep 22, 2022 12:24	75,590	426,410,948	370,389,461	0	2,260,992

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