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 listMay 15, 2021 21:47

Yuriy Lyfenko

Score: 5,474

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	May 15, 2021 21:46	5,442	37,874,245	14,342,000	3,073,000	2,392,064
2	May 15, 2021 21:47	5,446	34,776,537	16,403,000	1,025,000	2,379,776
3	May 15, 2021 21:47	5,448	45,382,901	17,434,000	0	2,519,040
4	May 15, 2021 21:47	5,448	39,997,386	17,435,000	0	2,519,040
5	May 15, 2021 21:46	5,456	40,763,621	16,432,000	1,027,000	2,387,968
6	May 15, 2021 21:47	5,457	42,877,807	16,434,000	1,027,000	2,392,064
7	May 15, 2021 21:46	5,459	37,675,507	16,442,000	1,027,000	2,387,968
8	May 15, 2021 21:46	5,460	40,048,016	15,417,000	2,055,000	2,387,968
9	May 15, 2021 21:46	5,461	40,241,063	17,476,000	0	2,260,992
10	May 15, 2021 21:47	5,461	35,626,051	17,476,000	0	2,519,040
11	May 15, 2021 21:47	5,462	38,202,532	17,479,000	0	2,519,040
12	May 15, 2021 21:47	5,462	42,259,329	16,451,000	1,028,000	2,383,872
13	May 15, 2021 21:47	5,463	33,805,277	17,482,000	0	2,519,040
14	May 15, 2021 21:47	5,464	42,271,983	16,458,000	1,028,000	2,519,040
15	May 15, 2021 21:47	5,465	34,424,218	15,430,000	2,057,000	2,465,792
16	May 15, 2021 21:47	5,472	43,879,577	16,481,000	1,030,000	2,392,064
17	May 15, 2021 21:47	5,473	31,535,490	17,513,000	0	2,506,752
18	May 15, 2021 21:46	5,473	39,247,142	17,514,000	0	2,396,160
19	May 15, 2021 21:46	5,474	44,554,870	16,487,000	1,030,000	2,519,040
20	May 15, 2021 21:46	5,485	40,725,769	17,553,000	0	2,387,968
21	May 15, 2021 21:47	5,486	39,053,843	17,554,000	0	2,506,752
22	May 15, 2021 21:46	5,489	39,240,180	16,533,000	1,033,000	2,387,968
23	May 15, 2021 21:47	5,490	35,627,449	16,534,000	1,033,000	2,383,872
24	May 15, 2021 21:47	5,496	37,333,652	16,552,000	1,034,000	2,387,968
25	May 15, 2021 21:47	5,581	44,198,105	14,884,000	2,976,000	2,519,040
26	May 15, 2021 21:47	5,583	46,734,400	16,875,000	992,000	2,392,064
27	May 15, 2021 21:47	5,589	44,975,302	15,898,000	1,987,000	2,383,872
28	May 15, 2021 21:47	5,687	85,048,113	18,199,419	0	2,273,280
29	May 15, 2021 21:46	5,691	85,575,273	18,210,294	0	2,277,376
30	May 15, 2021 21:46	5,696	75,175,641	18,225,785	0	2,277,376
31	May 15, 2021 21:46	5,706	101,663,076	18,260,321	0	2,285,568
32	May 15, 2021 21:47	5,707	92,344,050	18,263,875	0	2,273,280
33	May 15, 2021 21:47	5,724	85,614,517	18,317,554	0	2,285,568
34	May 15, 2021 21:47	5,724	89,544,203	18,316,571	0	2,277,376
35	May 15, 2021 21:47	5,765	83,711,700	18,447,866	0	2,281,472
36	May 15, 2021 21:47	5,777	64,939,759	18,486,543	0	2,273,280

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