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.

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Dominique GarmierScore: 148,640Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 20, 2026 12:14	146,521	745,279,136	713,954,000	3,999,000	2,269,184
2	Mar 20, 2026 12:46	146,631	744,299,522	714,494,000	3,997,000	2,289,664
3	Mar 20, 2026 12:19	146,719	742,976,239	714,924,000	3,999,000	2,269,184
4	Mar 20, 2026 14:23	147,012	751,484,664	717,360,000	2,997,000	2,281,472
5	Mar 20, 2026 03:19	147,027	745,722,124	716,437,000	3,996,000	2,330,624
6	Mar 20, 2026 11:51	147,051	752,183,367	716,551,000	3,997,000	2,334,720
7	Mar 20, 2026 12:04	147,200	747,961,664	719,280,000	2,000,000	2,269,184
8	Mar 20, 2026 12:46	147,302	746,681,753	717,784,000	3,998,000	2,289,664
9	Mar 20, 2026 13:04	147,331	747,323,721	718,923,000	2,999,000	2,338,816
10	Mar 20, 2026 11:49	147,363	755,880,557	719,079,000	3,000,000	2,269,184
11	Mar 20, 2026 13:44	147,418	752,780,651	719,349,000	2,997,000	2,338,816
12	Mar 20, 2026 13:35	147,422	748,861,365	718,372,000	3,996,000	2,273,280
13	Mar 20, 2026 13:04	147,428	747,630,623	718,399,000	3,996,000	2,334,720
14	Mar 20, 2026 13:10	147,470	748,328,796	719,604,000	2,998,000	2,449,408
15	Mar 20, 2026 13:44	147,513	753,072,213	718,814,000	3,998,000	2,281,472
16	Mar 20, 2026 11:51	147,603	751,113,614	719,262,000	3,995,000	2,338,816
17	Mar 20, 2026 03:19	147,624	755,986,505	719,363,000	3,996,000	2,289,664
18	Mar 20, 2026 12:25	147,657	751,290,840	719,522,000	3,997,000	2,351,104
19	Mar 20, 2026 12:19	147,690	750,488,030	719,684,000	3,998,000	2,445,312
20	Mar 20, 2026 03:19	147,832	750,748,037	720,381,000	3,996,000	2,265,088
21	Mar 20, 2026 11:49	147,863	751,517,993	720,531,000	3,997,000	2,285,568
22	Mar 20, 2026 12:46	147,872	757,603,519	721,577,000	2,998,000	2,334,720
23	Mar 20, 2026 12:31	147,910	755,039,913	722,761,000	1,999,000	2,265,088
24	Mar 20, 2026 12:25	147,980	751,398,573	721,102,000	4,000,000	2,281,472
25	Mar 20, 2026 12:14	147,985	754,495,673	722,126,000	3,000,000	2,273,280
26	Mar 20, 2026 13:04	148,064	754,692,269	721,515,000	3,997,000	2,289,664
27	Mar 20, 2026 11:51	148,094	752,509,981	722,661,000	2,998,000	2,281,472
28	Mar 20, 2026 12:14	148,171	756,520,611	722,038,000	4,000,000	2,281,472
29	Mar 20, 2026 12:56	148,192	755,141,082	724,139,000	2,000,000	2,273,280
30	Mar 20, 2026 03:19	148,220	753,542,115	722,282,000	3,996,000	2,330,624
31	Mar 20, 2026 14:01	148,243	755,093,484	723,396,000	2,997,000	2,338,816
32	Mar 20, 2026 12:59	148,257	754,607,765	722,464,000	3,997,000	2,285,568
33	Mar 20, 2026 12:46	148,268	753,632,192	723,515,000	2,997,000	2,342,912
34	Mar 20, 2026 11:37	148,281	754,276,922	722,581,000	3,997,000	2,342,912
35	Mar 20, 2026 12:56	148,298	754,776,382	723,660,000	2,998,000	2,273,280
36	Mar 20, 2026 11:33	148,442	761,517,189	723,368,000	3,996,000	2,330,624
37	Mar 20, 2026 12:46	148,444	760,714,318	723,381,000	3,996,000	2,281,472
38	Mar 20, 2026 11:51	148,496	757,976,092	724,633,000	2,998,000	2,330,624
39	Mar 20, 2026 13:23	148,498	758,611,710	723,640,000	3,998,000	2,289,664
40	Mar 20, 2026 03:19	148,524	754,886,082	724,767,000	2,999,000	2,289,664
41	Mar 20, 2026 03:19	148,529	754,169,884	725,794,000	1,999,000	2,334,720
42	Mar 20, 2026 13:44	148,539	758,065,063	723,844,000	3,999,000	2,273,280
43	Mar 20, 2026 13:23	148,566	754,502,912	723,974,000	3,999,000	2,269,184
44	Mar 20, 2026 11:33	148,640	755,932,985	724,339,000	3,996,000	2,269,184
45	Mar 20, 2026 13:23	148,655	755,890,272	725,413,000	2,997,000	2,338,816
46	Mar 20, 2026 12:14	148,697	753,827,231	724,619,000	3,997,000	2,330,624
47	Mar 20, 2026 12:31	148,728	755,299,173	724,769,000	3,998,000	2,273,280
48	Mar 20, 2026 11:51	148,730	761,166,344	726,778,000	1,999,000	2,334,720
49	Mar 20, 2026 12:14	148,759	752,456,048	725,920,000	2,999,000	2,265,088
50	Mar 20, 2026 12:46	148,794	759,769,935	726,089,000	3,000,000	2,281,472
51	Mar 20, 2026 12:31	148,799	755,706,241	727,117,000	2,000,000	2,273,280
52	Mar 20, 2026 13:35	148,852	757,829,684	725,381,000	3,996,000	2,334,720
53	Mar 20, 2026 12:04	148,878	759,367,833	726,505,000	2,997,000	2,334,720
54	Mar 20, 2026 12:46	148,894	755,982,197	725,583,000	3,997,000	2,269,184
55	Mar 20, 2026 12:59	148,906	758,437,387	725,639,000	3,998,000	2,281,472
56	Mar 20, 2026 14:23	148,914	757,038,773	725,681,000	3,998,000	2,281,472
57	Mar 20, 2026 11:51	149,056	762,767,887	725,378,000	4,995,000	2,281,472
58	Mar 20, 2026 13:35	149,071	758,947,638	727,449,000	2,997,000	2,338,816
59	Mar 20, 2026 12:14	149,101	760,222,880	728,598,000	1,998,000	2,392,064
60	Mar 20, 2026 11:40	149,116	758,472,197	726,670,000	3,998,000	2,269,184
61	Mar 20, 2026 12:59	149,248	757,436,128	725,320,000	5,994,000	2,342,912
62	Mar 20, 2026 14:01	149,313	760,308,280	727,638,000	3,998,000	2,265,088
63	Mar 20, 2026 11:37	149,384	757,751,198	727,985,000	3,999,000	2,269,184
64	Mar 20, 2026 11:51	149,396	759,788,141	728,041,000	4,000,000	2,334,720
65	Mar 20, 2026 12:14	149,454	759,845,280	730,328,000	1,998,000	2,269,184
66	Mar 20, 2026 12:14	149,454	761,848,442	728,329,000	3,996,000	2,289,664
67	Mar 20, 2026 12:19	149,537	758,040,506	728,733,000	3,998,000	2,338,816
68	Mar 20, 2026 11:37	149,724	760,429,389	729,652,000	3,998,000	2,342,912
69	Mar 20, 2026 11:49	149,743	767,140,863	729,744,000	3,998,000	2,285,568
70	Mar 20, 2026 11:33	149,767	762,218,559	729,859,000	3,999,000	2,289,664
71	Mar 20, 2026 13:10	149,776	761,977,337	730,903,000	2,999,000	2,289,664
72	Mar 20, 2026 13:10	149,869	763,284,323	730,363,000	3,996,000	2,334,720
73	Mar 20, 2026 11:51	149,879	764,744,347	729,410,000	4,995,000	2,330,624
74	Mar 20, 2026 11:40	149,968	758,677,302	730,843,000	3,999,000	2,285,568
75	Mar 20, 2026 03:19	150,013	766,067,518	731,064,000	4,000,000	2,289,664
76	Mar 20, 2026 12:14	150,135	762,154,894	731,664,000	3,998,000	2,437,120
77	Mar 20, 2026 14:01	150,171	761,487,491	731,841,000	3,999,000	2,269,184
78	Mar 20, 2026 03:19	150,179	761,295,501	731,877,000	3,999,000	2,342,912
79	Mar 20, 2026 11:51	150,473	764,386,534	734,320,000	2,997,000	2,338,816
80	Mar 20, 2026 12:04	150,496	763,828,329	733,436,000	3,996,000	2,453,504
81	Mar 20, 2026 12:56	150,711	768,219,221	734,486,000	3,997,000	2,273,280
82	Mar 20, 2026 12:46	150,779	768,273,691	735,820,000	2,999,000	2,342,912
83	Mar 20, 2026 12:25	150,933	769,876,503	736,576,000	2,998,000	2,265,088
84	Mar 20, 2026 12:46	151,128	767,103,663	736,529,000	3,997,000	2,289,664
85	Mar 20, 2026 03:19	151,174	769,551,406	736,753,000	3,998,000	2,342,912
86	Mar 20, 2026 11:40	151,653	773,380,597	741,099,000	2,000,000	2,338,816
87	Mar 20, 2026 14:23	152,722	777,802,677	745,341,000	2,997,000	2,285,568

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