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 listJul 13, 2021 19:29

Andrey Tsvetkov

Score: 5,692

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	Jul 13, 2021 19:30	5,651	34,439,325	16,074,000	2,009,000	2,334,720
2	Jul 13, 2021 19:29	5,652	50,680,313	16,078,000	2,009,000	2,531,328
3	Jul 13, 2021 19:30	5,654	44,980,372	16,083,000	2,010,000	2,527,232
4	Jul 13, 2021 19:27	5,656	44,202,502	15,083,000	3,016,000	2,334,720
5	Jul 13, 2021 19:27	5,662	46,119,027	15,099,000	3,019,000	2,334,720
6	Jul 13, 2021 19:27	5,664	40,286,554	15,105,000	3,021,000	2,519,040
7	Jul 13, 2021 19:29	5,665	47,824,235	16,113,000	2,014,000	2,334,720
8	Jul 13, 2021 19:30	5,668	44,104,150	16,123,000	2,015,000	2,334,720
9	Jul 13, 2021 19:30	5,674	41,209,377	16,141,000	2,017,000	2,523,136
10	Jul 13, 2021 19:27	5,678	44,242,317	16,150,000	2,018,000	2,523,136
11	Jul 13, 2021 19:29	5,684	47,497,860	15,158,000	3,031,000	2,334,720
12	Jul 13, 2021 19:27	5,686	42,910,446	16,173,000	2,021,000	2,396,160
13	Jul 13, 2021 19:30	5,686	43,084,256	15,162,000	3,032,000	2,334,720
14	Jul 13, 2021 19:30	5,686	35,412,824	16,174,000	2,021,000	2,334,720
15	Jul 13, 2021 19:29	5,688	45,034,303	16,178,000	2,022,000	2,387,968
16	Jul 13, 2021 19:30	5,689	40,356,441	15,171,000	3,034,000	2,322,432
17	Jul 13, 2021 19:29	5,690	35,031,310	17,197,000	1,011,000	2,535,424
18	Jul 13, 2021 19:27	5,692	45,211,562	16,190,000	2,023,000	2,527,232
19	Jul 13, 2021 19:27	5,692	41,408,990	14,167,000	4,047,000	2,334,720
20	Jul 13, 2021 19:29	5,698	35,599,358	15,195,000	3,039,000	2,330,624
21	Jul 13, 2021 19:29	5,699	41,589,336	15,197,000	3,039,000	2,527,232
22	Jul 13, 2021 19:30	5,700	39,976,327	15,201,000	3,040,000	2,334,720
23	Jul 13, 2021 19:29	5,701	37,644,368	15,203,000	3,040,000	2,531,328
24	Jul 13, 2021 19:27	5,701	84,187,551	18,243,858	0	2,224,128
25	Jul 13, 2021 19:27	5,704	38,292,683	16,226,000	2,028,000	2,334,720
26	Jul 13, 2021 19:27	5,704	42,131,839	15,212,000	3,042,000	2,527,232
27	Jul 13, 2021 19:29	5,704	72,524,560	18,253,673	0	2,224,128
28	Jul 13, 2021 19:30	5,707	87,427,101	18,263,025	0	2,236,416
29	Jul 13, 2021 19:27	5,707	82,679,512	18,262,429	0	2,228,224
30	Jul 13, 2021 19:30	5,716	88,100,593	18,291,050	0	2,224,128
31	Jul 13, 2021 19:30	5,731	39,052,754	15,282,000	3,056,000	2,351,104
32	Jul 13, 2021 19:29	5,736	37,911,890	17,337,000	1,019,000	2,334,720
33	Jul 13, 2021 19:29	5,739	89,462,844	18,365,564	0	2,236,416
34	Jul 13, 2021 19:30	5,748	88,593,785	18,394,295	0	2,232,320
35	Jul 13, 2021 19:27	5,760	61,876,260	18,433,518	0	2,236,416
36	Jul 13, 2021 19:29	5,825	113,865,372	18,639,946	0	2,224,128

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