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: 49,927Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Nov 2, 2022 00:35	49,830	262,333,653	244,167,000	0	2,281,472
2	Nov 2, 2022 00:35	49,853	269,698,586	243,278,000	1,001,000	2,396,160
3	Nov 2, 2022 00:35	49,854	273,672,733	244,287,000	0	2,281,472
4	Nov 2, 2022 00:35	49,882	269,299,657	243,420,000	1,001,000	2,400,256
5	Nov 2, 2022 00:35	49,883	268,306,537	242,433,000	1,995,000	2,396,160
6	Nov 2, 2022 00:35	49,884	271,546,440	243,430,000	1,001,000	2,404,352
7	Nov 2, 2022 00:35	49,912	274,397,599	242,571,000	1,996,000	2,281,472
8	Nov 2, 2022 00:35	49,912	270,862,371	242,574,000	1,996,000	2,281,472
9	Nov 2, 2022 00:35	49,914	271,852,370	244,580,000	0	2,400,256
10	Nov 2, 2022 00:35	49,914	272,751,441	242,581,000	1,996,000	2,400,256
11	Nov 2, 2022 00:35	49,916	272,038,711	243,591,000	998,000	2,281,472
12	Nov 2, 2022 00:35	49,918	268,618,869	242,604,000	1,996,000	2,396,160
13	Nov 2, 2022 00:35	49,918	267,362,663	242,603,000	1,996,000	2,396,160
14	Nov 2, 2022 00:35	49,918	269,392,258	242,601,000	1,996,000	2,408,448
15	Nov 2, 2022 00:35	49,919	270,056,930	243,604,000	998,000	2,273,280
16	Nov 2, 2022 00:35	49,920	277,577,026	243,612,000	998,000	2,281,472
17	Nov 2, 2022 00:35	49,922	270,775,750	242,623,000	1,996,000	2,281,472
18	Nov 2, 2022 00:35	49,926	268,005,566	243,633,000	1,002,000	2,281,472
19	Nov 2, 2022 00:35	49,927	266,540,670	243,642,000	998,000	2,510,848
20	Nov 2, 2022 00:35	49,932	270,506,270	243,670,000	998,000	2,400,256
21	Nov 2, 2022 00:35	49,937	267,658,076	242,692,000	1,997,000	2,281,472
22	Nov 2, 2022 00:35	49,948	271,134,747	243,747,000	998,000	2,400,256
23	Nov 2, 2022 00:35	49,951	269,051,520	242,761,000	1,998,000	2,506,752
24	Nov 2, 2022 00:35	49,966	270,418,123	243,836,000	999,000	2,514,944
25	Nov 2, 2022 00:35	49,970	273,609,777	242,855,000	1,998,000	2,392,064
26	Nov 2, 2022 00:35	49,973	266,323,328	242,872,000	1,998,000	2,392,064
27	Nov 2, 2022 00:35	49,977	268,027,175	242,886,000	1,999,000	2,396,160
28	Nov 2, 2022 00:35	50,030	304,635,855	245,148,227	0	2,269,184
29	Nov 2, 2022 00:35	50,038	318,477,014	245,186,321	0	2,265,088
30	Nov 2, 2022 00:35	50,057	309,095,916	245,280,314	0	2,273,280
31	Nov 2, 2022 00:35	50,066	304,079,717	245,321,879	0	2,265,088
32	Nov 2, 2022 00:35	50,066	305,185,349	245,322,327	0	2,265,088
33	Nov 2, 2022 00:35	50,071	311,837,067	245,349,127	0	2,269,184
34	Nov 2, 2022 00:35	50,113	303,220,980	245,553,408	0	2,273,280
35	Nov 2, 2022 00:35	50,162	316,714,247	245,793,898	0	2,260,992
36	Nov 2, 2022 00:35	51,333	343,644,846	251,529,800	0	2,252,800

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