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 19:28

Dmitry Dolgopolov

Score: 5,028

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 19:28	4,994	36,150,430	13,985,000	1,997,000	2,273,280
2	May 24, 2021 19:28	4,995	32,758,983	13,987,000	1,998,000	2,437,120
3	May 24, 2021 19:28	4,996	35,988,005	13,988,000	1,998,000	2,273,280
4	May 24, 2021 19:28	4,999	44,148,854	13,998,000	1,999,000	2,535,424
5	May 24, 2021 19:28	4,999	37,119,132	13,998,000	1,999,000	2,453,504
6	May 24, 2021 19:28	5,003	33,782,828	14,009,000	2,001,000	2,535,424
7	May 24, 2021 19:28	5,005	32,585,728	14,014,000	2,002,000	2,269,184
8	May 24, 2021 19:28	5,006	37,050,532	14,018,000	2,002,000	2,445,312
9	May 24, 2021 19:28	5,006	31,603,456	14,017,000	2,002,000	2,453,504
10	May 24, 2021 19:28	5,009	36,681,487	14,025,000	2,003,000	2,437,120
11	May 24, 2021 19:28	5,009	35,180,923	14,025,000	2,003,000	2,273,280
12	May 24, 2021 19:28	5,012	29,483,184	14,033,000	2,004,000	2,437,120
13	May 24, 2021 19:28	5,012	40,740,347	14,034,000	2,004,000	2,273,280
14	May 24, 2021 19:28	5,014	33,826,294	14,041,000	2,005,000	2,535,424
15	May 24, 2021 19:28	5,015	38,181,335	14,043,000	2,006,000	2,441,216
16	May 24, 2021 19:28	5,016	35,801,897	14,044,000	2,006,000	2,449,408
17	May 24, 2021 19:28	5,017	41,998,572	14,047,000	2,006,000	2,273,280
18	May 24, 2021 19:28	5,021	31,354,935	14,059,000	2,008,000	2,273,280
19	May 24, 2021 19:28	5,028	42,433,713	14,078,000	2,011,000	2,535,424
20	May 24, 2021 19:28	5,029	36,939,545	15,089,000	1,005,000	2,449,408
21	May 24, 2021 19:28	5,032	30,133,218	14,089,000	2,012,000	2,535,424
22	May 24, 2021 19:28	5,033	31,348,318	14,092,000	2,013,000	2,445,312
23	May 24, 2021 19:28	5,033	38,827,447	15,101,000	1,006,000	2,273,280
24	May 24, 2021 19:28	5,044	35,269,392	14,125,000	2,017,000	2,445,312
25	May 24, 2021 19:28	5,046	29,372,386	14,129,000	2,018,000	2,265,088
26	May 24, 2021 19:28	5,057	35,086,047	14,160,000	2,022,000	2,535,424
27	May 24, 2021 19:28	5,112	42,265,202	15,337,000	1,022,000	2,445,312
28	May 24, 2021 19:28	5,224	39,970,414	16,716,746	0	2,256,896
29	May 24, 2021 19:28	5,246	55,084,089	16,787,655	0	2,199,552
30	May 24, 2021 19:28	5,252	91,723,012	16,806,754	0	2,260,992
31	May 24, 2021 19:28	5,255	87,056,706	16,816,486	0	2,203,648
32	May 24, 2021 19:28	5,258	67,679,421	16,824,781	0	2,199,552
33	May 24, 2021 19:28	5,271	48,607,212	16,867,512	0	2,199,552
34	May 24, 2021 19:28	5,274	104,001,867	16,876,948	0	2,203,648
35	May 24, 2021 19:28	5,281	55,852,841	16,898,292	0	2,195,456
36	May 24, 2021 19:28	5,314	83,380,806	17,006,255	0	2,211,840

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