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 listAug 31, 2024 09:06

matsuoka-601Score: 56,292Success

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	Aug 31, 2024 09:07	56,259	304,856,742	274,670,000	998,000	2,531,328
2	Aug 31, 2024 09:05	56,264	298,656,262	273,696,000	1,997,000	2,396,160
3	Aug 31, 2024 09:06	56,264	302,407,258	274,696,000	998,000	2,404,352
4	Aug 31, 2024 09:05	56,266	301,727,690	273,704,000	1,997,000	2,535,424
5	Aug 31, 2024 09:05	56,268	296,936,171	273,718,000	1,997,000	2,400,256
6	Aug 31, 2024 09:08	56,268	303,086,496	273,717,000	1,997,000	2,523,136
7	Aug 31, 2024 09:08	56,268	295,810,619	273,716,000	1,997,000	2,519,040
8	Aug 31, 2024 09:07	56,268	298,521,722	273,717,000	1,997,000	2,400,256
9	Aug 31, 2024 09:07	56,269	304,523,356	273,721,000	1,997,000	2,404,352
10	Aug 31, 2024 09:06	56,269	300,431,842	273,721,000	1,997,000	2,408,448
11	Aug 31, 2024 09:06	56,270	297,614,447	274,723,000	1,002,000	2,502,656
12	Aug 31, 2024 09:06	56,272	297,165,171	273,735,000	1,998,000	2,498,560
13	Aug 31, 2024 09:06	56,273	299,157,348	273,740,000	1,998,000	2,404,352
14	Aug 31, 2024 09:06	56,274	302,456,158	273,746,000	1,998,000	2,523,136
15	Aug 31, 2024 09:06	56,274	298,672,517	273,746,000	1,998,000	2,273,280
16	Aug 31, 2024 09:06	56,275	299,675,716	273,749,000	1,998,000	2,527,232
17	Aug 31, 2024 09:08	56,278	301,892,372	273,762,000	1,998,000	2,265,088
18	Aug 31, 2024 09:08	56,279	296,806,780	273,767,000	1,998,000	2,502,656
19	Aug 31, 2024 09:07	56,280	297,128,685	273,773,000	1,998,000	2,400,256
20	Aug 31, 2024 09:07	56,280	298,179,952	273,772,000	1,998,000	2,408,448
21	Aug 31, 2024 09:05	56,281	298,063,808	273,781,000	1,998,000	2,404,352
22	Aug 31, 2024 09:06	56,283	299,927,911	273,789,000	1,998,000	2,527,232
23	Aug 31, 2024 09:07	56,286	301,524,064	273,804,000	1,998,000	2,265,088
24	Aug 31, 2024 09:07	56,287	293,713,140	274,805,000	1,002,000	2,490,368
25	Aug 31, 2024 09:08	56,287	297,503,611	273,806,000	1,998,000	2,531,328
26	Aug 31, 2024 09:06	56,287	301,455,385	273,806,000	1,998,000	2,408,448
27	Aug 31, 2024 09:05	56,288	297,897,602	273,811,000	1,998,000	2,531,328
28	Aug 31, 2024 09:06	56,289	298,600,071	273,819,000	1,998,000	2,400,256
29	Aug 31, 2024 09:06	56,289	302,786,539	273,819,000	1,998,000	2,519,040
30	Aug 31, 2024 09:07	56,290	304,270,860	273,825,000	1,998,000	2,396,160
31	Aug 31, 2024 09:08	56,292	302,182,972	273,833,000	1,998,000	2,527,232
32	Aug 31, 2024 09:07	56,292	307,622,022	273,831,000	1,998,000	2,265,088
33	Aug 31, 2024 09:06	56,296	301,266,252	273,850,000	1,998,000	2,400,256
34	Aug 31, 2024 09:08	56,297	295,560,744	273,856,000	1,998,000	2,404,352
35	Aug 31, 2024 09:06	56,300	298,548,164	273,873,000	1,999,000	2,514,944
36	Aug 31, 2024 09:08	56,592	296,505,560	276,300,000	1,001,000	2,404,352
37	Aug 31, 2024 09:08	56,622	308,399,524	276,448,000	1,001,000	2,281,472
38	Aug 31, 2024 09:08	56,676	304,915,880	275,714,000	1,997,000	2,412,544
39	Aug 31, 2024 09:07	56,742	301,645,816	276,034,000	2,000,000	2,404,352
40	Aug 31, 2024 09:05	56,755	303,026,475	276,099,000	2,000,000	2,408,448
41	Aug 31, 2024 09:05	56,810	301,178,991	277,369,000	1,001,000	2,502,656
42	Aug 31, 2024 09:06	56,987	300,811,796	278,237,000	1,000,000	2,400,256
43	Aug 31, 2024 09:06	57,099	299,576,908	277,787,000	1,998,000	2,404,352
44	Aug 31, 2024 09:07	57,181	299,289,836	279,186,000	1,000,000	2,408,448
45	Aug 31, 2024 09:05	57,197	303,991,266	279,266,000	1,000,000	2,408,448
46	Aug 31, 2024 09:06	57,201	300,034,812	279,282,000	1,001,000	2,392,064
47	Aug 31, 2024 09:06	57,332	306,962,882	278,929,000	1,999,000	2,527,232
48	Aug 31, 2024 09:06	57,344	303,118,910	278,989,000	1,999,000	2,400,256
49	Aug 31, 2024 09:07	57,365	309,630,255	280,088,000	1,000,000	2,269,184
50	Aug 31, 2024 09:06	57,441	308,435,344	280,459,000	1,001,000	2,400,256
51	Aug 31, 2024 09:05	57,675	304,320,078	280,609,000	1,997,000	2,408,448
52	Aug 31, 2024 09:05	57,708	306,188,550	280,770,000	1,998,000	2,281,472
53	Aug 31, 2024 09:06	57,811	308,119,181	282,276,000	1,000,000	2,273,280
54	Aug 31, 2024 09:06	57,817	306,669,763	282,303,000	1,001,000	2,400,256
55	Aug 31, 2024 09:05	57,938	303,475,203	281,898,000	1,999,000	2,404,352
56	Aug 31, 2024 09:08	57,945	306,263,520	281,930,000	1,999,000	2,404,352
57	Aug 31, 2024 09:05	57,948	303,391,091	281,946,000	1,999,000	2,396,160
58	Aug 31, 2024 09:08	58,364	309,387,522	283,987,000	1,999,000	2,396,160
59	Aug 31, 2024 09:06	58,370	307,389,206	284,011,000	2,000,000	2,273,280
60	Aug 31, 2024 09:06	58,378	310,392,189	284,052,000	2,000,000	2,531,328

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