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 listJun 15, 2024 05:53

matsuoka-601Score: 56,495Success

Source Code

Source code access is restricted. Log in to request access.

Challenge History

No challenges yet.

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jun 15, 2024 05:53	52,209	319,532,727	255,826,219	0	2,248,704
2	Jun 15, 2024 05:53	52,220	325,472,731	255,879,968	0	2,244,608
3	Jun 15, 2024 05:54	52,225	319,558,261	255,903,672	0	2,240,512
4	Jun 15, 2024 05:53	52,342	323,322,569	256,473,728	0	2,244,608
5	Jun 15, 2024 05:54	52,342	320,111,387	256,474,463	0	2,244,608
6	Jun 15, 2024 05:53	52,392	318,039,720	256,721,592	0	2,240,512
7	Jun 15, 2024 05:53	52,659	323,001,241	258,031,084	0	2,367,488
8	Jun 15, 2024 05:53	52,941	331,945,102	259,410,077	0	2,236,416
9	Jun 15, 2024 05:54	53,564	327,178,353	262,464,824	0	2,244,608
10	Jun 15, 2024 05:54	56,472	302,210,826	273,716,000	2,996,000	2,502,656
11	Jun 15, 2024 05:53	56,472	298,594,567	273,715,000	2,996,000	2,506,752
12	Jun 15, 2024 05:53	56,476	303,361,206	273,737,000	2,997,000	2,277,376
13	Jun 15, 2024 05:53	56,482	301,884,026	273,765,000	2,997,000	2,277,376
14	Jun 15, 2024 05:53	56,482	299,349,019	274,762,000	1,998,000	2,502,656
15	Jun 15, 2024 05:53	56,489	303,300,768	273,798,000	2,997,000	2,281,472
16	Jun 15, 2024 05:53	56,489	305,493,386	273,798,000	2,997,000	2,334,720
17	Jun 15, 2024 05:54	56,489	304,595,171	273,801,000	2,997,000	2,502,656
18	Jun 15, 2024 05:53	56,491	298,940,113	273,811,000	2,997,000	2,289,664
19	Jun 15, 2024 05:53	56,495	304,143,156	273,828,000	2,998,000	2,281,472
20	Jun 15, 2024 05:54	56,498	299,527,335	272,845,000	3,997,000	2,519,040
21	Jun 15, 2024 05:53	56,499	303,593,800	273,847,000	2,998,000	2,498,560
22	Jun 15, 2024 05:54	56,499	306,125,864	274,847,000	1,998,000	2,289,664
23	Jun 15, 2024 05:53	56,500	305,727,932	273,851,000	2,998,000	2,498,560
24	Jun 15, 2024 05:54	56,500	301,453,453	273,854,000	2,998,000	2,289,664
25	Jun 15, 2024 05:54	56,504	298,650,291	274,870,000	1,999,000	2,293,760
26	Jun 15, 2024 05:53	56,511	305,731,117	273,908,000	2,998,000	2,285,568
27	Jun 15, 2024 05:53	56,513	304,518,848	274,915,000	1,999,000	2,289,664
28	Jun 15, 2024 05:53	56,515	306,333,769	273,926,000	2,999,000	2,289,664
29	Jun 15, 2024 05:53	56,518	307,358,414	273,939,000	2,999,000	2,490,368
30	Jun 15, 2024 05:53	56,694	303,721,462	275,802,000	1,998,000	2,502,656
31	Jun 15, 2024 05:54	57,130	303,239,399	277,940,000	1,999,000	2,494,464
32	Jun 15, 2024 05:53	57,146	303,672,188	278,017,000	2,000,000	2,502,656
33	Jun 15, 2024 05:54	57,231	309,708,902	278,427,000	2,003,000	2,502,656
34	Jun 15, 2024 05:54	58,524	309,486,047	283,771,000	2,997,000	2,281,472
35	Jun 15, 2024 05:53	58,556	313,557,434	283,926,000	2,999,000	2,281,472
36	Jun 15, 2024 05:53	58,565	311,805,925	283,970,000	2,999,000	2,281,472

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