Count uint8

Count the number of bytes equal to 127 in a binary stream as fast as possible.

Input: 250 000 000 uint8 values in binary on STDIN.

Output: The count of elements equal to 127, printed as a decimal string.

Restrictions:30s512Mb 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 listJun 13, 2021 11:36

Dmitry Dolgopolov

Score: 4,976

Success

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	Jun 13, 2021 11:36	4,952	33,072,177	13,866,000	1,980,000	2,531,328
2	Jun 13, 2021 11:36	4,960	39,577,074	14,880,000	992,000	2,453,504
3	Jun 13, 2021 11:33	4,961	28,093,064	13,891,000	1,984,000	2,531,328
4	Jun 13, 2021 11:36	4,962	42,407,150	13,893,000	1,984,000	2,531,328
5	Jun 13, 2021 11:33	4,963	41,900,915	13,897,000	1,985,000	2,531,328
6	Jun 13, 2021 11:33	4,963	39,108,305	13,895,000	1,985,000	2,453,504
7	Jun 13, 2021 11:36	4,963	42,763,220	13,897,000	1,985,000	2,531,328
8	Jun 13, 2021 11:36	4,963	38,308,982	13,897,000	1,985,000	2,269,184
9	Jun 13, 2021 11:36	4,963	32,989,326	13,898,000	1,985,000	2,449,408
10	Jun 13, 2021 11:33	4,964	39,363,127	13,900,000	1,985,000	2,445,312
11	Jun 13, 2021 11:36	4,964	29,768,299	13,899,000	1,985,000	2,531,328
12	Jun 13, 2021 11:36	4,964	33,585,380	13,900,000	1,985,000	2,269,184
13	Jun 13, 2021 11:36	4,966	35,900,935	13,906,000	1,986,000	2,445,312
14	Jun 13, 2021 11:33	4,966	39,751,817	13,905,000	1,986,000	2,531,328
15	Jun 13, 2021 11:36	4,966	31,548,290	13,906,000	1,986,000	2,453,504
16	Jun 13, 2021 11:36	4,966	37,038,962	13,905,000	1,986,000	2,531,328
17	Jun 13, 2021 11:33	4,968	27,897,189	14,904,000	993,000	2,445,312
18	Jun 13, 2021 11:36	4,971	44,617,010	13,918,000	1,988,000	2,441,216
19	Jun 13, 2021 11:36	4,976	32,727,356	13,933,000	1,990,000	2,531,328
20	Jun 13, 2021 11:36	4,976	32,122,463	13,934,000	1,990,000	2,531,328
21	Jun 13, 2021 11:33	4,980	42,985,471	13,945,000	1,992,000	2,269,184
22	Jun 13, 2021 11:36	4,981	48,225,955	13,947,000	1,992,000	2,531,328
23	Jun 13, 2021 11:33	4,984	36,093,076	13,957,000	1,993,000	2,265,088
24	Jun 13, 2021 11:36	4,990	37,779,413	13,972,000	1,996,000	2,269,184
25	Jun 13, 2021 11:33	4,993	41,530,822	13,979,000	1,997,000	2,531,328
26	Jun 13, 2021 11:36	4,999	34,473,640	13,999,000	1,999,000	2,441,216
27	Jun 13, 2021 11:36	5,000	34,360,195	14,001,000	2,000,000	2,531,328
28	Jun 13, 2021 11:36	5,171	76,109,439	16,546,756	0	2,199,552
29	Jun 13, 2021 11:33	5,174	87,919,191	16,555,505	0	2,203,648
30	Jun 13, 2021 11:36	5,183	67,043,348	16,586,159	0	2,203,648
31	Jun 13, 2021 11:33	5,195	73,812,836	16,624,033	0	2,199,552
32	Jun 13, 2021 11:36	5,205	60,047,384	16,654,929	0	2,203,648
33	Jun 13, 2021 11:36	5,207	84,106,067	16,661,267	0	2,207,744
34	Jun 13, 2021 11:36	5,215	88,703,414	16,687,269	0	2,207,744
35	Jun 13, 2021 11:33	5,221	67,052,149	16,707,127	0	2,207,744
36	Jun 13, 2021 11:36	5,238	76,927,737	16,762,292	0	2,195,456

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