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 listJun 13, 2021 11:04

Dmitry Dolgopolov

Score: 4,989

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	Jun 13, 2021 11:03	4,961	42,029,240	13,891,000	1,984,000	2,445,312
2	Jun 13, 2021 10:59	4,961	40,074,147	14,883,000	992,000	2,449,408
3	Jun 13, 2021 11:04	4,961	38,720,830	13,892,000	1,984,000	2,457,600
4	Jun 13, 2021 11:04	4,962	31,267,568	14,886,000	992,000	2,445,312
5	Jun 13, 2021 10:59	4,962	30,304,285	14,885,000	992,000	2,269,184
6	Jun 13, 2021 11:03	4,963	42,001,834	13,897,000	1,985,000	2,449,408
7	Jun 13, 2021 11:03	4,965	40,741,843	13,902,000	1,986,000	2,453,504
8	Jun 13, 2021 11:04	4,966	31,119,205	14,897,000	993,000	2,445,312
9	Jun 13, 2021 10:59	4,969	43,454,174	13,915,000	1,987,000	2,445,312
10	Jun 13, 2021 11:03	4,971	36,528,640	13,919,000	1,988,000	2,269,184
11	Jun 13, 2021 10:59	4,974	33,654,699	13,928,000	1,989,000	2,531,328
12	Jun 13, 2021 11:03	4,974	31,851,799	14,924,000	994,000	2,269,184
13	Jun 13, 2021 10:59	4,976	37,941,001	13,932,000	1,990,000	2,531,328
14	Jun 13, 2021 11:04	4,977	36,917,553	13,935,000	1,990,000	2,269,184
15	Jun 13, 2021 11:04	4,980	30,658,830	13,944,000	1,992,000	2,531,328
16	Jun 13, 2021 10:59	4,983	38,696,634	13,954,000	1,993,000	2,453,504
17	Jun 13, 2021 11:04	4,988	36,045,787	13,968,000	1,995,000	2,269,184
18	Jun 13, 2021 11:03	4,988	39,827,149	13,965,000	1,995,000	2,269,184
19	Jun 13, 2021 11:03	4,989	33,734,234	13,970,000	1,995,000	2,453,504
20	Jun 13, 2021 10:59	4,993	31,480,024	13,979,000	1,997,000	2,269,184
21	Jun 13, 2021 11:04	4,997	43,407,783	13,992,000	1,998,000	2,445,312
22	Jun 13, 2021 11:03	4,999	39,958,470	13,999,000	1,999,000	2,445,312
23	Jun 13, 2021 10:59	4,999	45,359,899	13,998,000	1,999,000	2,269,184
24	Jun 13, 2021 11:04	5,001	40,120,797	14,002,000	2,000,000	2,531,328
25	Jun 13, 2021 11:03	5,002	34,872,329	14,005,000	2,000,000	2,531,328
26	Jun 13, 2021 10:59	5,005	37,778,261	14,015,000	2,002,000	2,531,328
27	Jun 13, 2021 11:04	5,023	38,273,862	14,064,000	2,009,000	2,527,232
28	Jun 13, 2021 11:03	5,198	89,245,364	16,632,475	0	2,199,552
29	Jun 13, 2021 11:04	5,200	87,476,730	16,639,359	0	2,215,936
30	Jun 13, 2021 11:04	5,207	78,982,529	16,663,525	0	2,195,456
31	Jun 13, 2021 11:03	5,213	85,389,834	16,682,575	0	2,207,744
32	Jun 13, 2021 11:03	5,218	66,122,763	16,697,164	0	2,203,648
33	Jun 13, 2021 10:59	5,220	83,955,337	16,704,735	0	2,211,840
34	Jun 13, 2021 10:59	5,230	104,535,004	16,736,978	0	2,211,840
35	Jun 13, 2021 11:04	5,238	80,380,199	16,762,600	0	2,195,456
36	Jun 13, 2021 10:59	5,249	72,275,220	16,797,934	0	2,211,840

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