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 listDec 9, 2021 08:18

Yuriy LyfenkoScore: 100,176Success

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	Dec 9, 2021 08:18	99,640	550,908,104	488,235,691	0	2,207,744
2	Dec 9, 2021 08:19	99,666	563,630,260	488,363,090	0	2,211,840
3	Dec 9, 2021 17:31	99,668	571,045,173	488,374,168	0	2,203,648
4	Dec 9, 2021 08:19	99,691	554,985,786	488,484,566	0	2,207,744
5	Dec 9, 2021 08:18	99,697	546,621,182	488,514,218	0	2,211,840
6	Dec 9, 2021 17:31	99,711	550,404,484	488,584,556	0	2,207,744
7	Dec 9, 2021 17:31	99,760	551,999,310	488,821,794	0	2,211,840
8	Dec 9, 2021 08:19	99,796	540,574,103	489,000,492	0	2,203,648
9	Dec 9, 2021 08:18	99,805	547,560,421	489,044,375	0	2,203,648
10	Dec 9, 2021 17:31	100,127	519,770,330	488,622,000	1,998,000	2,265,088
11	Dec 9, 2021 17:31	100,128	522,429,147	488,627,000	1,998,000	2,527,232
12	Dec 9, 2021 17:31	100,138	521,162,669	488,677,000	1,998,000	2,265,088
13	Dec 9, 2021 08:18	100,145	517,739,017	488,711,000	1,998,000	2,338,816
14	Dec 9, 2021 17:31	100,146	516,091,766	488,716,000	1,998,000	2,465,792
15	Dec 9, 2021 08:19	100,154	522,498,315	488,757,000	1,999,000	2,265,088
16	Dec 9, 2021 08:18	100,155	524,051,891	488,762,000	1,999,000	2,342,912
17	Dec 9, 2021 08:19	100,161	516,688,609	488,792,000	1,999,000	2,527,232
18	Dec 9, 2021 17:31	100,168	517,417,701	488,826,000	1,999,000	2,347,008
19	Dec 9, 2021 17:31	100,176	519,730,560	489,864,000	999,000	2,342,912
20	Dec 9, 2021 08:19	100,178	517,416,618	488,874,000	1,999,000	2,342,912
21	Dec 9, 2021 08:19	100,180	515,139,352	488,883,000	1,999,000	2,265,088
22	Dec 9, 2021 17:31	100,182	519,749,532	488,895,000	1,999,000	2,465,792
23	Dec 9, 2021 08:19	100,190	521,788,102	488,930,000	1,999,000	2,330,624
24	Dec 9, 2021 08:19	100,200	518,376,753	488,979,000	1,999,000	2,424,832
25	Dec 9, 2021 08:19	100,201	519,377,047	488,988,000	1,999,000	2,265,088
26	Dec 9, 2021 08:18	100,202	515,889,256	489,992,000	999,000	2,416,640
27	Dec 9, 2021 08:18	100,208	520,539,940	490,018,000	1,000,000	2,269,184
28	Dec 9, 2021 08:18	100,218	513,531,287	489,067,000	2,000,000	2,265,088
29	Dec 9, 2021 08:18	100,227	517,879,159	489,111,000	2,000,000	2,338,816
30	Dec 9, 2021 08:18	100,227	519,162,115	490,113,000	1,000,000	2,269,184
31	Dec 9, 2021 08:19	100,230	512,328,432	490,127,000	1,000,000	2,347,008
32	Dec 9, 2021 08:19	100,240	517,943,871	490,177,000	1,000,000	2,265,088
33	Dec 9, 2021 08:18	100,261	516,719,444	491,278,000	0	2,338,816
34	Dec 9, 2021 17:31	100,272	520,438,624	489,337,000	1,997,000	2,265,088
35	Dec 9, 2021 08:18	100,281	518,257,741	491,379,000	0	2,461,696
36	Dec 9, 2021 17:31	100,289	516,578,661	489,420,000	1,997,000	2,265,088

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