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.

Back to listJul 23, 2022 09:02

Robert BurkeScore: 64,627Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jul 23, 2022 09:02	63,401	372,898,265	310,664,604	0	2,183,168
2	Jul 23, 2022 09:02	63,412	370,035,141	310,720,219	0	2,174,976
3	Jul 23, 2022 09:02	63,416	377,821,114	310,740,026	0	2,183,168
4	Jul 23, 2022 09:01	63,420	372,871,674	310,757,167	0	2,256,896
5	Jul 23, 2022 09:02	63,431	388,946,462	310,809,661	0	2,183,168
6	Jul 23, 2022 09:01	63,441	374,886,915	310,862,022	0	2,183,168
7	Jul 23, 2022 09:01	63,443	375,150,594	310,868,781	0	2,187,264
8	Jul 23, 2022 09:02	63,465	389,818,860	310,976,452	0	2,183,168
9	Jul 23, 2022 09:02	63,481	382,079,025	311,056,998	0	2,179,072
10	Jul 23, 2022 09:02	64,560	340,211,742	315,343,000	1,001,000	2,269,184
11	Jul 23, 2022 09:02	64,575	345,321,695	315,415,000	1,001,000	2,281,472
12	Jul 23, 2022 09:02	64,578	348,080,546	315,433,000	1,001,000	2,535,424
13	Jul 23, 2022 09:01	64,580	339,919,493	315,439,000	1,001,000	2,449,408
14	Jul 23, 2022 09:02	64,582	343,960,798	315,453,000	1,001,000	2,441,216
15	Jul 23, 2022 09:01	64,588	346,182,322	315,482,000	1,001,000	2,437,120
16	Jul 23, 2022 09:02	64,589	343,922,045	315,485,000	1,001,000	2,531,328
17	Jul 23, 2022 09:02	64,590	349,698,011	315,488,000	1,001,000	2,281,472
18	Jul 23, 2022 09:02	64,615	342,859,978	315,614,000	998,000	2,281,472
19	Jul 23, 2022 09:01	64,627	342,984,153	314,673,000	1,997,000	2,281,472
20	Jul 23, 2022 09:02	64,634	337,633,835	314,710,000	1,998,000	2,273,280
21	Jul 23, 2022 09:02	64,636	339,212,339	315,715,000	1,002,000	2,281,472
22	Jul 23, 2022 09:01	64,636	337,689,650	314,717,000	1,998,000	2,281,472
23	Jul 23, 2022 09:01	64,644	336,458,754	314,758,000	1,998,000	2,281,472
24	Jul 23, 2022 09:02	64,645	340,353,684	314,763,000	1,998,000	2,445,312
25	Jul 23, 2022 09:02	64,653	335,142,879	314,803,000	1,998,000	2,281,472
26	Jul 23, 2022 09:02	64,664	347,488,067	314,855,000	1,999,000	2,281,472
27	Jul 23, 2022 09:02	64,672	338,874,825	314,896,000	1,999,000	2,281,472
28	Jul 23, 2022 09:02	64,678	339,612,935	314,923,000	1,999,000	2,441,216
29	Jul 23, 2022 09:02	64,686	342,878,489	314,964,000	1,999,000	2,457,600
30	Jul 23, 2022 09:01	64,698	342,512,773	315,022,000	2,000,000	2,445,312
31	Jul 23, 2022 09:01	64,762	342,160,758	316,331,000	1,001,000	2,281,472
32	Jul 23, 2022 09:02	64,833	342,851,109	315,685,000	1,998,000	2,281,472
33	Jul 23, 2022 09:01	64,955	339,776,811	317,278,000	1,000,000	2,449,408
34	Jul 23, 2022 09:02	65,071	344,190,167	316,851,000	1,999,000	2,449,408
35	Jul 23, 2022 09:02	65,082	338,439,998	316,901,000	1,999,000	2,281,472
36	Jul 23, 2022 09:01	65,431	345,529,888	318,616,000	1,997,000	2,281,472

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