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 21, 2022 23:58

Robert BurkeScore: 70,309Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jul 21, 2022 23:58	67,646	392,138,034	331,464,522	0	2,289,664
2	Jul 22, 2022 00:04	67,655	397,880,129	331,509,450	0	2,289,664
3	Jul 21, 2022 23:58	67,661	389,123,710	331,536,560	0	2,289,664
4	Jul 22, 2022 00:08	67,667	395,461,709	331,569,339	0	2,281,472
5	Jul 21, 2022 23:58	67,685	395,630,079	331,654,602	0	2,285,568
6	Jul 22, 2022 00:04	67,702	391,444,354	331,739,969	0	2,285,568
7	Jul 22, 2022 00:08	67,709	393,716,531	331,774,561	0	2,285,568
8	Jul 22, 2022 00:04	67,712	391,560,697	331,787,048	0	2,293,760
9	Jul 22, 2022 00:04	70,216	365,126,397	343,056,000	1,000,000	2,281,472
10	Jul 22, 2022 00:08	70,222	369,282,465	343,090,000	1,000,000	2,281,472
11	Jul 22, 2022 00:08	70,250	369,658,602	344,227,000	0	2,428,928
12	Jul 21, 2022 23:58	70,250	365,078,911	344,223,000	0	2,281,472
13	Jul 22, 2022 00:04	70,262	375,777,618	343,289,000	997,000	2,281,472
14	Jul 21, 2022 23:58	70,264	369,807,796	344,296,000	0	2,281,472
15	Jul 21, 2022 23:58	70,279	374,726,621	342,370,000	1,996,000	2,428,928
16	Jul 21, 2022 23:58	70,286	369,942,367	342,407,000	1,996,000	2,428,928
17	Jul 22, 2022 00:04	70,299	375,957,603	343,466,000	1,001,000	2,281,472
18	Jul 22, 2022 00:08	70,305	370,185,677	342,497,000	1,997,000	2,281,472
19	Jul 22, 2022 00:04	70,309	375,234,891	344,513,000	0	2,281,472
20	Jul 22, 2022 00:08	70,327	364,716,603	342,604,000	1,997,000	2,420,736
21	Jul 22, 2022 00:04	70,329	370,811,310	343,614,000	998,000	2,281,472
22	Jul 22, 2022 00:08	70,332	371,265,113	343,630,000	998,000	2,433,024
23	Jul 22, 2022 00:04	70,334	369,422,424	343,641,000	998,000	2,428,928
24	Jul 22, 2022 00:08	70,353	365,667,739	343,730,000	999,000	2,437,120
25	Jul 22, 2022 00:04	70,357	368,036,043	343,748,000	999,000	2,281,472
26	Jul 21, 2022 23:58	70,389	368,012,585	342,907,000	1,999,000	2,428,928
27	Jul 22, 2022 00:08	70,400	362,622,070	343,960,000	999,000	2,277,376
28	Jul 22, 2022 00:08	70,426	368,495,656	344,088,000	1,000,000	2,281,472
29	Jul 21, 2022 23:58	70,445	364,714,962	344,182,000	1,000,000	2,433,024
30	Jul 21, 2022 23:58	70,460	368,798,303	345,255,000	0	2,281,472
31	Jul 21, 2022 23:58	70,534	370,708,250	344,619,000	998,000	2,428,928
32	Jul 22, 2022 00:04	70,537	369,744,521	344,631,000	998,000	2,428,928
33	Jul 21, 2022 23:58	70,701	372,024,993	345,437,000	998,000	2,281,472
34	Jul 22, 2022 00:08	70,715	372,954,520	345,507,000	998,000	2,281,472
35	Jul 22, 2022 00:04	70,744	369,830,364	345,650,000	998,000	2,428,928
36	Jul 22, 2022 00:08	74,720	416,032,283	366,128,650	0	2,293,760

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