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 12, 2024 08:21

matsuoka-601Score: 59,394Success

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 12, 2024 08:45	58,721	311,328,841	284,738,000	2,997,000	2,420,736
2	Jun 12, 2024 08:45	58,723	311,852,940	285,744,000	1,998,000	2,420,736
3	Jun 12, 2024 08:45	58,740	313,486,058	285,830,000	1,998,000	2,289,664
4	Jun 12, 2024 08:45	58,764	315,174,496	284,944,000	2,999,000	2,293,760
5	Jun 12, 2024 08:45	58,786	311,498,216	285,053,000	3,000,000	2,416,640
6	Jun 12, 2024 08:45	58,788	311,623,126	285,061,000	3,000,000	2,293,760
7	Jun 12, 2024 08:21	58,803	308,605,640	285,136,000	3,001,000	2,420,736
8	Jun 12, 2024 08:21	58,906	313,496,081	286,642,000	1,997,000	2,416,640
9	Jun 12, 2024 08:45	59,026	320,410,754	287,227,000	2,001,000	2,437,120
10	Jun 12, 2024 08:45	59,152	314,308,503	287,849,000	1,998,000	2,293,760
11	Jun 12, 2024 08:45	59,161	312,987,960	286,892,000	2,998,000	2,523,136
12	Jun 12, 2024 08:21	59,228	322,269,401	289,216,000	1,000,000	2,424,832
13	Jun 12, 2024 08:45	59,360	311,490,957	288,866,000	1,999,000	2,420,736
14	Jun 12, 2024 08:21	59,361	319,269,537	287,871,000	2,998,000	2,424,832
15	Jun 12, 2024 08:45	59,366	318,249,810	287,894,000	2,998,000	2,293,760
16	Jun 12, 2024 08:21	59,380	314,341,501	288,965,000	1,999,000	2,293,760
17	Jun 12, 2024 08:45	59,382	315,580,298	287,972,000	2,999,000	2,293,760
18	Jun 12, 2024 08:45	59,394	313,143,232	288,033,000	3,000,000	2,420,736
19	Jun 12, 2024 08:21	59,394	311,223,338	289,030,000	2,000,000	2,293,760
20	Jun 12, 2024 08:45	59,653	316,645,121	290,299,000	2,002,000	2,293,760
21	Jun 12, 2024 08:21	60,232	317,749,758	293,139,000	2,000,000	2,293,760
22	Jun 12, 2024 08:21	60,491	322,467,112	293,400,000	3,004,000	2,424,832
23	Jun 12, 2024 08:21	60,834	356,639,391	298,085,421	0	2,265,088
24	Jun 12, 2024 08:21	60,852	374,900,038	298,176,483	0	2,260,992
25	Jun 12, 2024 08:21	60,854	371,744,647	298,182,709	0	2,273,280
26	Jun 12, 2024 08:45	61,290	364,199,308	300,320,662	0	2,281,472
27	Jun 12, 2024 08:45	61,785	371,979,847	302,747,862	0	2,277,376
28	Jun 12, 2024 08:45	61,863	373,197,019	303,127,145	0	2,281,472
29	Jun 12, 2024 08:45	61,892	368,431,388	303,271,437	0	2,277,376
30	Jun 12, 2024 08:45	62,374	334,583,892	304,637,000	998,000	2,416,640
31	Jun 12, 2024 08:45	62,385	363,104,717	305,684,141	0	2,285,568
32	Jun 12, 2024 08:45	63,033	367,393,087	308,862,151	0	2,281,472
33	Jun 12, 2024 08:45	63,715	334,580,237	309,204,000	3,001,000	2,420,736
34	Jun 12, 2024 08:45	64,350	343,894,341	313,315,000	2,002,000	2,293,760
35	Jun 12, 2024 08:45	65,463	345,082,063	317,771,000	2,997,000	2,420,736
36	Jun 12, 2024 08:21	74,054	390,855,206	359,866,000	2,998,000	2,441,216

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