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 20, 2022 13:05

Robert BurkeScore: 97,595Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jul 20, 2022 13:05	96,035	528,163,125	470,569,444	0	2,289,664
2	Jul 20, 2022 13:05	96,039	527,711,684	470,589,607	0	2,293,760
3	Jul 20, 2022 13:57	96,042	536,221,466	470,606,610	0	2,297,856
4	Jul 20, 2022 13:35	96,049	524,785,899	470,639,137	0	2,289,664
5	Jul 20, 2022 13:57	96,061	545,070,345	470,697,114	0	2,285,568
6	Jul 20, 2022 13:35	96,076	541,923,075	470,774,144	0	2,289,664
7	Jul 20, 2022 13:05	96,081	536,993,508	470,798,883	0	2,289,664
8	Jul 20, 2022 13:35	97,537	504,031,743	476,934,000	999,000	2,433,024
9	Jul 20, 2022 13:57	97,538	498,785,859	476,939,000	999,000	2,424,832
10	Jul 20, 2022 13:35	97,568	500,388,259	477,081,000	1,000,000	2,428,928
11	Jul 20, 2022 13:57	97,571	500,277,771	477,097,000	1,000,000	2,281,472
12	Jul 20, 2022 13:57	97,573	499,435,747	477,109,000	1,000,000	2,424,832
13	Jul 20, 2022 13:05	97,574	501,900,714	477,111,000	1,000,000	2,433,024
14	Jul 20, 2022 13:05	97,578	496,770,369	477,132,000	1,000,000	2,424,832
15	Jul 20, 2022 13:57	97,580	500,673,485	477,140,000	1,000,000	2,281,472
16	Jul 20, 2022 13:35	97,583	497,224,367	478,156,000	0	2,433,024
17	Jul 20, 2022 13:05	97,593	502,473,437	478,206,000	0	2,281,472
18	Jul 20, 2022 13:35	97,593	506,316,838	478,205,000	0	2,428,928
19	Jul 20, 2022 13:35	97,595	506,164,861	478,217,000	0	2,281,472
20	Jul 20, 2022 13:57	97,597	497,647,116	478,223,000	0	2,281,472
21	Jul 20, 2022 13:05	97,610	504,119,825	477,289,000	998,000	2,281,472
22	Jul 20, 2022 13:05	97,611	496,450,784	478,293,000	0	2,281,472
23	Jul 20, 2022 13:35	97,612	505,588,773	477,299,000	1,000,000	2,277,376
24	Jul 20, 2022 13:35	97,615	507,602,628	478,315,000	0	2,424,832
25	Jul 20, 2022 13:35	97,616	502,924,616	478,316,000	0	2,514,944
26	Jul 20, 2022 13:05	97,618	502,920,813	477,328,000	1,000,000	2,424,832
27	Jul 20, 2022 13:57	97,618	509,233,709	477,326,000	1,000,000	2,281,472
28	Jul 20, 2022 13:05	97,626	510,344,022	478,369,000	0	2,281,472
29	Jul 20, 2022 13:05	97,626	507,638,279	478,368,000	0	2,277,376
30	Jul 20, 2022 13:35	97,662	499,332,302	476,545,000	1,998,000	2,514,944
31	Jul 20, 2022 13:05	97,665	505,245,736	477,561,000	999,000	2,281,472
32	Jul 20, 2022 13:57	97,672	505,564,966	477,595,000	999,000	2,281,472
33	Jul 20, 2022 13:57	97,676	504,092,700	477,614,000	999,000	2,281,472
34	Jul 20, 2022 13:57	97,683	501,929,062	476,648,000	1,998,000	2,514,944
35	Jul 20, 2022 13:35	103,639	570,033,711	507,830,604	0	2,281,472
36	Jul 20, 2022 13:57	103,645	574,225,568	507,860,731	0	2,293,760

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