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 listApr 23, 2025 02:53

vahookScore: 4,193Success

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	Memory
1	Apr 23, 2025 02:54	4,160	28,306,516	13,313,000	2,494,464
2	Apr 23, 2025 02:53	4,165	34,349,505	13,327,000	2,494,464
3	Apr 23, 2025 02:37	4,167	29,055,296	13,334,000	2,273,280
4	Apr 23, 2025 02:53	4,169	26,293,903	13,340,000	2,531,328
5	Apr 23, 2025 02:54	4,170	31,248,276	13,344,000	2,498,560
6	Apr 23, 2025 02:37	4,178	28,029,083	13,370,000	2,490,368
7	Apr 23, 2025 02:37	4,180	31,835,847	13,377,000	2,498,560
8	Apr 23, 2025 02:54	4,180	29,372,775	13,375,000	2,273,280
9	Apr 23, 2025 02:37	4,182	25,349,358	13,383,000	2,273,280
10	Apr 23, 2025 02:54	4,183	25,317,190	13,384,000	2,273,280
11	Apr 23, 2025 02:37	4,185	31,602,547	13,392,000	2,531,328
12	Apr 23, 2025 02:54	4,186	28,463,189	13,396,000	2,277,376
13	Apr 23, 2025 02:53	4,186	25,389,284	13,395,000	2,273,280
14	Apr 23, 2025 02:37	4,189	29,357,666	13,405,000	2,490,368
15	Apr 23, 2025 02:54	4,190	29,475,201	13,409,000	2,494,464
16	Apr 23, 2025 02:54	4,190	28,839,786	13,408,000	2,273,280
17	Apr 23, 2025 02:37	4,190	30,682,629	13,409,000	2,531,328
18	Apr 23, 2025 02:54	4,191	39,417,095	13,411,000	2,273,280
19	Apr 23, 2025 02:54	4,193	28,301,520	13,419,000	2,490,368
20	Apr 23, 2025 02:54	4,194	29,383,612	13,420,000	2,273,280
21	Apr 23, 2025 02:52	4,194	33,132,524	13,421,000	2,273,280
22	Apr 23, 2025 02:37	4,198	26,893,187	13,432,000	2,502,656
23	Apr 23, 2025 02:52	4,199	26,349,730	13,437,000	2,494,464
24	Apr 23, 2025 02:52	4,199	31,381,556	13,436,000	2,502,656
25	Apr 23, 2025 02:54	4,200	26,141,450	13,439,000	2,494,464
26	Apr 23, 2025 02:54	4,204	30,089,321	13,454,000	2,273,280
27	Apr 23, 2025 02:53	4,208	29,251,433	13,466,000	2,273,280
28	Apr 23, 2025 02:54	4,210	31,754,260	13,471,000	2,531,328
29	Apr 23, 2025 02:37	4,210	34,295,406	13,473,000	2,486,272
30	Apr 23, 2025 02:54	4,211	27,369,203	13,475,000	2,273,280
31	Apr 23, 2025 02:54	4,215	26,074,014	13,489,000	2,269,184
32	Apr 23, 2025 02:53	4,216	28,041,344	13,491,000	2,273,280
33	Apr 23, 2025 02:53	4,220	27,491,771	13,504,000	2,494,464
34	Apr 23, 2025 02:37	4,221	33,474,281	13,506,000	2,494,464
35	Apr 23, 2025 02:37	4,236	29,098,505	13,556,000	2,502,656
36	Apr 23, 2025 02:37	4,263	40,154,888	13,640,000	2,490,368

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