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 listJan 6, 2026 09:48

Rajarshi BasuScore: 4,359Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jan 6, 2026 09:52	4,337	29,872,040	11,897,000	1,982,000	2,400,256
2	Jan 6, 2026 09:56	4,339	35,796,230	11,903,000	1,983,000	2,387,968
3	Jan 6, 2026 09:56	4,340	30,301,495	13,889,000	0	2,277,376
4	Jan 6, 2026 09:56	4,347	39,476,487	11,924,000	1,987,000	2,277,376
5	Jan 6, 2026 09:51	4,347	29,163,827	11,924,000	1,987,000	2,404,352
6	Jan 6, 2026 09:56	4,348	39,698,455	11,927,000	1,987,000	2,396,160
7	Jan 6, 2026 09:51	4,348	35,547,856	12,842,000	1,070,000	2,277,376
8	Jan 6, 2026 09:51	4,348	35,165,950	11,926,000	1,987,000	2,277,376
9	Jan 6, 2026 09:56	4,349	33,038,988	13,916,000	0	2,277,376
10	Jan 6, 2026 09:56	4,352	35,770,987	12,931,000	994,000	2,277,376
11	Jan 6, 2026 09:52	4,353	29,983,389	12,934,000	994,000	2,277,376
12	Jan 6, 2026 09:51	4,353	34,027,120	12,935,000	995,000	2,277,376
13	Jan 6, 2026 09:51	4,358	34,470,362	11,952,000	1,992,000	2,408,448
14	Jan 6, 2026 09:52	4,359	28,571,155	11,956,000	1,992,000	2,400,256
15	Jan 6, 2026 09:51	4,360	35,018,781	11,960,000	1,993,000	2,404,352
16	Jan 6, 2026 09:51	4,361	31,279,361	11,962,000	1,993,000	2,277,376
17	Jan 6, 2026 09:51	4,362	36,593,041	11,965,000	1,994,000	2,277,376
18	Jan 6, 2026 09:51	4,363	29,096,305	12,964,000	997,000	2,396,160
19	Jan 6, 2026 09:56	4,363	35,726,852	11,967,000	1,994,000	2,277,376
20	Jan 6, 2026 09:51	4,364	36,123,907	12,968,000	997,000	2,396,160
21	Jan 6, 2026 09:56	4,365	41,293,586	12,971,000	997,000	2,392,064
22	Jan 6, 2026 09:51	4,370	32,174,447	11,986,000	1,997,000	2,510,848
23	Jan 6, 2026 09:56	4,374	32,904,219	12,998,000	999,000	2,396,160
24	Jan 6, 2026 09:51	4,401	34,015,914	13,077,000	1,005,000	2,396,160
25	Jan 6, 2026 09:48	4,544	39,710,238	13,504,000	1,038,000	2,387,968
26	Jan 6, 2026 09:48	4,556	35,594,571	13,539,000	1,041,000	2,297,856
27	Jan 6, 2026 09:48	4,561	31,582,771	13,553,000	1,042,000	2,277,376

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