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 24, 2021 19:29

Dmitry Dolgopolov

Score: 5,020

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 24, 2021 19:29	4,975	29,978,782	14,860,000	1,061,000	2,445,312
2	May 24, 2021 19:29	4,978	35,704,781	13,940,000	1,991,000	2,441,216
3	May 24, 2021 19:29	4,991	33,015,271	13,974,000	1,996,000	2,535,424
4	May 24, 2021 19:31	4,991	38,146,576	13,974,000	1,996,000	2,273,280
5	May 24, 2021 19:31	4,994	35,646,037	13,984,000	1,997,000	2,535,424
6	May 24, 2021 19:29	4,997	37,616,366	13,991,000	1,998,000	2,273,280
7	May 24, 2021 19:31	4,998	34,969,194	13,994,000	1,999,000	2,535,424
8	May 24, 2021 19:29	4,999	40,655,450	13,998,000	1,999,000	2,273,280
9	May 24, 2021 19:31	5,000	39,114,315	14,001,000	2,000,000	2,445,312
10	May 24, 2021 19:29	5,001	37,834,012	14,003,000	2,000,000	2,535,424
11	May 24, 2021 19:29	5,007	29,241,431	14,020,000	2,002,000	2,535,424
12	May 24, 2021 19:29	5,008	37,240,402	14,023,000	2,003,000	2,273,280
13	May 24, 2021 19:29	5,009	37,034,001	14,026,000	2,003,000	2,273,280
14	May 24, 2021 19:31	5,011	35,293,876	14,031,000	2,004,000	2,273,280
15	May 24, 2021 19:29	5,013	32,463,319	14,038,000	2,005,000	2,535,424
16	May 24, 2021 19:29	5,013	32,015,021	14,035,000	2,005,000	2,273,280
17	May 24, 2021 19:31	5,016	33,230,875	14,044,000	2,006,000	2,273,280
18	May 24, 2021 19:29	5,016	38,674,822	14,044,000	2,006,000	2,273,280
19	May 24, 2021 19:31	5,020	29,818,365	14,056,000	2,008,000	2,441,216
20	May 24, 2021 19:29	5,022	39,736,711	15,065,000	1,004,000	2,441,216
21	May 24, 2021 19:29	5,022	37,539,412	15,066,000	1,004,000	2,449,408
22	May 24, 2021 19:31	5,023	39,310,437	14,063,000	2,009,000	2,441,216
23	May 24, 2021 19:31	5,025	38,106,254	14,071,000	2,010,000	2,535,424
24	May 24, 2021 19:29	5,026	33,821,304	14,072,000	2,010,000	2,535,424
25	May 24, 2021 19:29	5,031	40,903,661	15,026,000	1,073,000	2,449,408
26	May 24, 2021 19:29	5,046	40,716,789	14,129,000	2,018,000	2,441,216
27	May 24, 2021 19:29	5,049	29,404,154	14,138,000	2,019,000	2,445,312
28	May 24, 2021 19:29	5,217	91,714,976	16,693,860	0	2,195,456
29	May 24, 2021 19:29	5,233	48,229,541	16,745,591	0	2,211,840
30	May 24, 2021 19:29	5,241	44,086,884	16,770,662	0	2,199,552
31	May 24, 2021 19:29	5,245	41,676,848	16,785,008	0	2,203,648
32	May 24, 2021 19:31	5,247	49,340,479	16,791,282	0	2,195,456
33	May 24, 2021 19:31	5,258	91,464,932	16,824,918	0	2,195,456
34	May 24, 2021 19:31	5,275	74,081,130	16,878,560	0	2,199,552
35	May 24, 2021 19:29	5,328	67,442,772	17,048,670	0	2,195,456
36	May 24, 2021 19:29	5,334	83,677,812	17,068,052	0	2,199,552

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