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 listJul 1, 2021 08:32

gchebanovScore: 186,459Success

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	Jul 1, 2021 08:32	155,828	827,340,616	763,556,439	0	2,228,224
2	Jul 1, 2021 08:32	156,038	828,734,156	764,587,886	0	2,220,032
3	Jul 1, 2021 08:32	156,087	836,991,889	764,826,754	0	2,220,032
4	Jul 1, 2021 08:32	156,139	824,135,405	765,080,388	0	2,224,128
5	Jul 1, 2021 08:32	156,160	818,822,703	765,181,880	0	2,220,032
6	Jul 1, 2021 08:32	156,294	821,790,076	765,840,653	0	2,215,936
7	Jul 1, 2021 08:32	156,340	821,696,319	766,064,210	0	2,224,128
8	Jul 1, 2021 08:32	156,429	836,593,342	766,501,751	0	2,228,224
9	Jul 1, 2021 08:32	158,497	836,127,628	776,637,174	0	2,220,032
10	Jul 1, 2021 08:32	158,707	836,145,746	777,664,835	0	2,220,032
11	Jul 1, 2021 08:32	158,790	860,513,864	778,070,178	0	2,224,128
12	Jul 1, 2021 08:32	158,918	851,452,400	778,699,367	0	2,224,128
13	Jul 1, 2021 08:32	186,334	934,388,348	912,035,000	1,000,000	2,265,088
14	Jul 1, 2021 08:32	186,372	939,648,483	912,223,000	999,000	2,351,104
15	Jul 1, 2021 08:32	186,391	940,263,754	911,320,000	1,998,000	2,314,240
16	Jul 1, 2021 08:32	186,401	941,991,698	912,368,000	999,000	2,383,872
17	Jul 1, 2021 08:32	186,406	942,047,777	912,392,000	999,000	2,338,816
18	Jul 1, 2021 08:32	186,416	942,881,150	911,438,000	1,998,000	2,498,560
19	Jul 1, 2021 08:32	186,429	943,683,289	911,504,000	1,998,000	2,306,048
20	Jul 1, 2021 08:32	186,438	941,196,936	912,548,000	999,000	2,326,528
21	Jul 1, 2021 08:32	186,441	938,776,964	912,563,000	999,000	2,342,912
22	Jul 1, 2021 08:32	186,441	941,991,359	911,561,000	1,999,000	2,342,912
23	Jul 1, 2021 08:32	186,442	942,236,787	911,566,000	1,999,000	2,342,912
24	Jul 1, 2021 08:32	186,456	941,986,036	912,633,000	999,000	2,289,664
25	Jul 1, 2021 08:32	186,459	941,097,946	911,652,000	1,999,000	2,396,160
26	Jul 1, 2021 08:32	186,487	941,879,709	912,787,000	999,000	2,338,816
27	Jul 1, 2021 08:32	186,491	932,017,159	912,808,000	999,000	2,523,136
28	Jul 1, 2021 08:32	186,501	940,576,774	910,856,000	2,999,000	2,383,872
29	Jul 1, 2021 08:32	186,546	938,270,729	912,074,000	2,000,000	2,355,200
30	Jul 1, 2021 08:32	186,590	948,507,489	912,295,000	1,998,000	2,387,968
31	Jul 1, 2021 08:32	186,597	943,627,013	912,329,000	1,998,000	2,347,008
32	Jul 1, 2021 08:32	186,599	939,916,175	911,338,000	2,997,000	2,404,352
33	Jul 1, 2021 08:32	186,610	940,735,111	913,391,000	999,000	2,494,464
34	Jul 1, 2021 08:32	186,649	943,622,085	912,581,000	1,999,000	2,322,432
35	Jul 1, 2021 08:32	186,685	940,722,973	912,758,000	1,999,000	2,363,392
36	Jul 1, 2021 08:32	186,759	942,864,455	912,120,000	2,997,000	2,404,352
37	Jul 1, 2021 08:32	186,931	948,006,021	914,961,000	999,000	2,277,376
38	Jul 1, 2021 08:32	186,961	946,821,776	915,109,000	999,000	2,277,376
39	Jul 1, 2021 08:32	186,979	948,635,089	914,198,000	1,998,000	2,363,392
40	Jul 1, 2021 08:32	187,029	949,521,433	913,446,000	2,998,000	2,383,872
41	Jul 1, 2021 08:32	187,041	947,921,720	914,502,000	1,998,000	2,265,088
42	Jul 1, 2021 08:32	187,044	946,201,788	913,519,000	2,998,000	2,301,952
43	Jul 1, 2021 08:32	187,047	946,757,012	915,529,000	999,000	2,490,368
44	Jul 1, 2021 08:32	187,128	945,210,675	914,926,000	1,999,000	2,375,680
45	Jul 1, 2021 08:32	187,166	944,784,447	917,111,000	0	2,293,760
46	Jul 1, 2021 08:32	187,167	946,752,428	913,121,000	3,996,000	2,523,136
47	Jul 1, 2021 08:32	187,168	946,743,547	916,125,000	1,000,000	2,387,968
48	Jul 1, 2021 08:32	187,323	944,678,395	916,883,000	999,000	2,277,376

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