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 3, 2023 21:12

Jo Seaton

Score: 5,352

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 3, 2023 21:12	5,267	43,279,060	15,862,000	991,000	299,008
2	Jul 3, 2023 21:12	5,270	36,324,436	16,864,000	0	430,080
3	Jul 3, 2023 21:11	5,271	40,893,827	14,883,000	1,984,000	167,936
4	Jul 3, 2023 21:11	5,271	46,436,539	16,867,000	0	286,720
5	Jul 3, 2023 21:09	5,275	49,445,425	16,881,000	0	167,936
6	Jul 3, 2023 21:11	5,279	41,764,754	15,901,000	993,000	299,008
7	Jul 3, 2023 21:11	5,281	48,155,342	14,910,000	1,988,000	167,936
8	Jul 3, 2023 21:09	5,300	40,522,335	14,965,000	1,995,000	2,383,872
9	Jul 3, 2023 21:09	5,302	40,571,961	14,971,000	1,996,000	2,387,968
10	Jul 3, 2023 21:12	5,304	41,954,669	15,975,000	998,000	290,816
11	Jul 3, 2023 21:09	5,315	47,567,436	16,008,000	1,000,000	2,392,064
12	Jul 3, 2023 21:11	5,317	33,040,211	15,013,000	2,001,000	294,912
13	Jul 3, 2023 21:09	5,318	34,169,294	15,016,000	2,002,000	2,392,064
14	Jul 3, 2023 21:09	5,322	41,665,955	15,026,000	2,003,000	2,392,064
15	Jul 3, 2023 21:12	5,333	45,273,785	15,057,000	2,007,000	282,624
16	Jul 3, 2023 21:11	5,334	31,234,776	16,064,000	1,004,000	430,080
17	Jul 3, 2023 21:09	5,341	34,660,613	16,086,000	1,005,000	2,392,064
18	Jul 3, 2023 21:09	5,342	44,545,885	16,090,000	1,005,000	430,080
19	Jul 3, 2023 21:11	5,352	42,648,470	15,111,000	2,014,000	290,816
20	Jul 3, 2023 21:11	5,354	38,136,584	16,127,000	1,007,000	167,936
21	Jul 3, 2023 21:11	5,364	44,187,631	15,146,000	2,019,000	167,936
22	Jul 3, 2023 21:09	5,378	44,420,793	15,185,000	2,024,000	2,265,088
23	Jul 3, 2023 21:12	5,383	46,227,446	15,201,000	2,026,000	167,936
24	Jul 3, 2023 21:12	5,444	40,816,857	16,397,000	1,024,000	167,936
25	Jul 3, 2023 21:12	5,469	89,463,079	17,501,180	0	2,285,568
26	Jul 3, 2023 21:09	5,469	99,552,018	17,500,973	0	2,277,376
27	Jul 3, 2023 21:12	5,492	31,327,637	16,542,000	1,033,000	167,936
28	Jul 3, 2023 21:12	5,504	82,988,528	17,614,391	0	2,285,568
29	Jul 3, 2023 21:11	5,510	81,887,415	17,630,758	0	2,285,568
30	Jul 3, 2023 21:09	5,514	70,734,807	17,646,242	0	2,273,280
31	Jul 3, 2023 21:12	5,528	78,256,324	17,688,227	0	2,277,376
32	Jul 3, 2023 21:12	5,535	45,907,740	16,671,000	1,041,000	2,265,088
33	Jul 3, 2023 21:09	5,540	92,041,234	17,729,445	0	2,240,512
34	Jul 3, 2023 21:11	5,550	60,751,349	17,759,591	0	2,281,472
35	Jul 3, 2023 21:12	5,582	40,362,183	16,871,000	992,000	2,379,776
36	Jul 3, 2023 21:11	5,619	87,344,096	17,980,497	0	2,285,568

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