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 listOct 4, 2022 03:50

Bernard TeoScore: 59,838Success

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	Oct 4, 2022 03:50	58,415	345,228,996	286,232,549	0	2,265,088
2	Oct 4, 2022 03:51	58,421	335,973,542	286,264,008	0	2,265,088
3	Oct 4, 2022 03:50	58,428	342,016,756	286,297,929	0	2,269,184
4	Oct 4, 2022 03:50	58,443	354,661,254	286,368,318	0	2,265,088
5	Oct 4, 2022 03:50	58,452	346,420,239	286,416,185	0	2,277,376
6	Oct 4, 2022 03:51	58,459	350,067,703	286,446,884	0	2,273,280
7	Oct 4, 2022 03:50	58,461	356,696,183	286,456,961	0	2,260,992
8	Oct 4, 2022 03:50	58,465	345,239,972	286,479,861	0	2,273,280
9	Oct 4, 2022 03:50	58,480	344,530,129	286,551,105	0	2,277,376
10	Oct 4, 2022 03:51	58,495	343,443,461	286,625,734	0	2,269,184
11	Oct 4, 2022 03:50	58,539	343,920,460	286,840,904	0	2,265,088
12	Oct 4, 2022 03:50	59,526	317,555,933	290,678,000	998,000	2,281,472
13	Oct 4, 2022 03:50	59,680	315,525,824	291,431,000	1,001,000	2,396,160
14	Oct 4, 2022 03:50	59,733	315,078,214	290,696,000	1,997,000	2,408,448
15	Oct 4, 2022 03:50	59,781	315,840,894	291,928,000	999,000	2,396,160
16	Oct 4, 2022 03:50	59,792	321,039,549	291,982,000	999,000	2,387,968
17	Oct 4, 2022 03:50	59,792	318,614,873	290,980,000	1,999,000	2,281,472
18	Oct 4, 2022 03:50	59,793	314,724,919	291,988,000	999,000	2,400,256
19	Oct 4, 2022 03:50	59,800	315,580,164	291,019,000	2,000,000	2,387,968
20	Oct 4, 2022 03:51	59,806	316,498,423	291,047,000	2,000,000	2,400,256
21	Oct 4, 2022 03:50	59,807	316,693,463	292,053,000	1,000,000	2,281,472
22	Oct 4, 2022 03:50	59,812	316,076,604	292,079,000	1,000,000	2,404,352
23	Oct 4, 2022 03:50	59,821	315,350,898	291,121,000	2,000,000	2,281,472
24	Oct 4, 2022 03:50	59,824	314,693,072	292,138,000	1,000,000	2,281,472
25	Oct 4, 2022 03:51	59,838	315,340,533	292,206,000	1,000,000	2,281,472
26	Oct 4, 2022 03:51	59,840	318,080,045	292,218,000	1,000,000	2,478,080
27	Oct 4, 2022 03:50	59,844	319,241,257	293,235,000	0	2,281,472
28	Oct 4, 2022 03:51	59,845	310,350,932	293,239,000	0	2,281,472
29	Oct 4, 2022 03:50	59,848	324,262,727	293,255,000	0	2,281,472
30	Oct 4, 2022 03:50	59,856	312,561,925	292,293,000	1,001,000	2,396,160
31	Oct 4, 2022 03:51	59,860	315,735,254	291,321,000	1,995,000	2,396,160
32	Oct 4, 2022 03:51	59,861	316,604,140	292,319,000	1,001,000	2,281,472
33	Oct 4, 2022 03:50	59,862	316,455,557	293,322,000	0	2,277,376
34	Oct 4, 2022 03:50	59,869	322,759,917	291,362,000	1,995,000	2,400,256
35	Oct 4, 2022 03:50	59,879	318,703,836	292,404,000	1,001,000	2,404,352
36	Oct 4, 2022 03:50	59,885	320,987,354	292,434,000	1,001,000	2,281,472
37	Oct 4, 2022 03:50	59,890	319,559,715	292,461,000	1,001,000	2,519,040
38	Oct 4, 2022 03:50	59,893	322,827,394	291,481,000	1,996,000	2,404,352
39	Oct 4, 2022 03:50	59,911	319,239,578	292,564,000	998,000	2,400,256
40	Oct 4, 2022 03:50	59,919	323,910,224	291,605,000	1,997,000	2,281,472
41	Oct 4, 2022 03:51	59,929	315,690,566	291,657,000	1,997,000	2,396,160
42	Oct 4, 2022 03:50	59,931	316,356,289	291,667,000	1,997,000	2,400,256
43	Oct 4, 2022 03:51	59,932	316,034,121	292,668,000	998,000	2,400,256
44	Oct 4, 2022 03:50	59,938	322,794,887	292,696,000	998,000	2,281,472
45	Oct 4, 2022 03:50	59,946	315,333,910	291,735,000	1,998,000	2,400,256
46	Oct 4, 2022 03:50	59,983	317,272,692	291,920,000	1,999,000	2,281,472
47	Oct 4, 2022 03:51	59,997	316,691,173	291,987,000	1,999,000	2,400,256
48	Oct 4, 2022 03:50	62,078	379,073,406	304,182,842	0	2,273,280

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