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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Bernard TeoScore: 73,595Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Sep 22, 2022 12:05	73,507	384,249,783	359,184,000	1,000,000	2,281,472
2	Sep 22, 2022 12:20	73,526	387,683,646	359,275,000	1,000,000	2,396,160
3	Sep 22, 2022 12:07	73,527	385,206,553	360,282,000	0	2,281,472
4	Sep 22, 2022 12:07	73,529	387,129,709	359,290,000	1,000,000	2,281,472
5	Sep 22, 2022 12:20	73,533	391,752,795	360,311,000	0	2,392,064
6	Sep 22, 2022 12:07	73,534	383,332,539	360,319,000	0	2,396,160
7	Sep 22, 2022 12:05	73,543	386,895,505	359,360,000	1,001,000	2,392,064
8	Sep 22, 2022 12:07	73,545	387,203,505	358,375,000	1,996,000	2,281,472
9	Sep 22, 2022 12:05	73,548	391,587,174	359,385,000	1,001,000	2,387,968
10	Sep 22, 2022 12:20	73,550	389,311,590	358,400,000	1,996,000	2,281,472
11	Sep 22, 2022 12:20	73,550	388,617,830	358,397,000	1,996,000	2,281,472
12	Sep 22, 2022 12:06	73,558	390,959,209	359,431,000	1,001,000	2,400,256
13	Sep 22, 2022 12:06	73,560	387,881,097	360,446,000	0	2,510,848
14	Sep 22, 2022 12:06	73,563	386,639,121	360,460,000	0	2,396,160
15	Sep 22, 2022 12:07	73,578	385,119,353	358,536,000	1,997,000	2,396,160
16	Sep 22, 2022 12:07	73,580	385,784,124	358,545,000	1,997,000	2,281,472
17	Sep 22, 2022 12:07	73,589	386,062,860	359,587,000	998,000	2,404,352
18	Sep 22, 2022 12:20	73,590	387,883,308	359,594,000	998,000	2,277,376
19	Sep 22, 2022 12:20	73,592	391,654,565	359,602,000	998,000	2,387,968
20	Sep 22, 2022 12:20	73,592	389,370,099	359,603,000	998,000	2,400,256
21	Sep 22, 2022 12:06	73,593	382,023,909	358,609,000	1,997,000	2,392,064
22	Sep 22, 2022 12:06	73,595	389,561,420	359,617,000	998,000	2,281,472
23	Sep 22, 2022 12:06	73,595	386,776,357	359,617,000	998,000	2,281,472
24	Sep 22, 2022 12:05	73,595	383,998,744	359,617,000	998,000	2,396,160
25	Sep 22, 2022 12:06	73,595	390,034,593	359,616,000	998,000	2,396,160
26	Sep 22, 2022 12:05	73,596	389,965,400	359,620,000	998,000	2,396,160
27	Sep 22, 2022 12:05	73,596	390,475,940	358,622,000	1,997,000	2,404,352
28	Sep 22, 2022 12:05	73,597	389,060,515	359,626,000	998,000	2,281,472
29	Sep 22, 2022 12:07	73,598	388,780,923	359,633,000	998,000	2,392,064
30	Sep 22, 2022 12:05	73,599	387,121,726	358,640,000	1,997,000	2,281,472
31	Sep 22, 2022 12:05	73,602	383,249,808	359,650,000	999,000	2,281,472
32	Sep 22, 2022 12:20	73,602	388,031,442	359,653,000	999,000	2,281,472
33	Sep 22, 2022 12:20	73,602	393,222,646	358,652,000	1,998,000	2,281,472
34	Sep 22, 2022 12:07	73,612	389,903,993	359,700,000	999,000	2,412,544
35	Sep 22, 2022 12:06	73,619	386,682,968	359,732,000	999,000	2,404,352
36	Sep 22, 2022 12:06	73,622	384,186,443	358,752,000	1,998,000	2,281,472
37	Sep 22, 2022 12:05	73,781	424,559,760	361,524,553	0	2,256,896
38	Sep 22, 2022 12:07	73,792	428,803,091	361,579,187	0	2,269,184
39	Sep 22, 2022 12:07	73,798	429,553,267	361,610,759	0	2,260,992
40	Sep 22, 2022 12:20	73,799	424,049,077	361,616,260	0	2,265,088
41	Sep 22, 2022 12:07	73,800	423,880,879	361,620,991	0	2,265,088
42	Sep 22, 2022 12:20	73,825	431,078,889	361,744,303	0	2,273,280
43	Sep 22, 2022 12:06	73,825	411,945,079	361,743,407	0	2,277,376
44	Sep 22, 2022 12:20	73,842	430,944,494	361,824,008	0	2,273,280
45	Sep 22, 2022 12:05	73,865	416,939,431	361,936,666	0	2,269,184
46	Sep 22, 2022 12:06	77,477	450,819,808	379,635,524	0	2,265,088
47	Sep 22, 2022 12:05	77,490	449,787,345	379,701,337	0	2,269,184
48	Sep 22, 2022 12:06	77,494	462,015,979	379,721,321	0	2,260,992

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