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 2, 2021 11:57

Dmitry Dolgopolov

Score: 4,983

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 2, 2021 11:58	4,956	38,825,315	13,876,000	1,982,000	2,437,120
2	Jun 2, 2021 11:58	4,959	41,219,642	13,886,000	1,983,000	2,433,024
3	Jun 2, 2021 11:57	4,959	41,618,032	13,887,000	1,983,000	2,531,328
4	Jun 2, 2021 11:58	4,962	39,765,720	13,894,000	1,984,000	2,441,216
5	Jun 2, 2021 11:58	4,962	34,414,920	13,894,000	1,984,000	2,449,408
6	Jun 2, 2021 11:58	4,963	44,490,304	13,895,000	1,985,000	2,273,280
7	Jun 2, 2021 11:58	4,963	30,204,765	13,896,000	1,985,000	2,441,216
8	Jun 2, 2021 11:57	4,963	40,511,157	13,895,000	1,985,000	2,445,312
9	Jun 2, 2021 11:58	4,966	42,506,521	14,897,000	993,000	2,437,120
10	Jun 2, 2021 11:58	4,966	42,653,750	13,905,000	1,986,000	2,531,328
11	Jun 2, 2021 11:58	4,966	41,175,621	13,904,000	1,986,000	2,535,424
12	Jun 2, 2021 11:58	4,968	39,982,024	14,838,000	1,059,000	2,445,312
13	Jun 2, 2021 11:57	4,970	42,177,953	13,916,000	1,988,000	2,445,312
14	Jun 2, 2021 11:58	4,971	39,662,935	13,920,000	1,988,000	2,273,280
15	Jun 2, 2021 11:58	4,972	31,100,495	13,921,000	1,988,000	2,273,280
16	Jun 2, 2021 11:57	4,973	45,069,074	13,923,000	1,989,000	2,445,312
17	Jun 2, 2021 11:57	4,976	34,000,762	13,932,000	1,990,000	2,535,424
18	Jun 2, 2021 11:57	4,979	44,573,496	13,942,000	1,991,000	2,273,280
19	Jun 2, 2021 11:57	4,983	36,772,367	13,954,000	1,993,000	2,445,312
20	Jun 2, 2021 11:58	4,988	39,497,992	13,965,000	1,995,000	2,449,408
21	Jun 2, 2021 11:57	4,989	35,942,447	13,971,000	1,995,000	2,535,424
22	Jun 2, 2021 11:58	4,990	43,914,535	14,903,000	1,064,000	2,535,424
23	Jun 2, 2021 11:58	4,992	42,804,191	13,978,000	1,996,000	2,535,424
24	Jun 2, 2021 11:58	4,992	29,653,769	13,978,000	1,996,000	2,531,328
25	Jun 2, 2021 11:57	4,996	36,761,885	13,989,000	1,998,000	2,535,424
26	Jun 2, 2021 11:58	5,001	32,252,673	14,002,000	2,000,000	2,437,120
27	Jun 2, 2021 11:58	5,029	40,063,074	15,087,000	1,005,000	2,445,312
28	Jun 2, 2021 11:58	5,172	78,050,787	16,551,771	0	2,260,992
29	Jun 2, 2021 11:57	5,181	71,032,552	16,578,340	0	2,195,456
30	Jun 2, 2021 11:58	5,186	81,129,162	16,596,673	0	2,256,896
31	Jun 2, 2021 11:57	5,191	77,858,778	16,611,570	0	2,203,648
32	Jun 2, 2021 11:58	5,192	75,099,360	16,613,910	0	2,199,552
33	Jun 2, 2021 11:58	5,204	86,988,321	16,653,954	0	2,195,456
34	Jun 2, 2021 11:57	5,210	68,753,773	16,672,373	0	2,195,456
35	Jun 2, 2021 11:58	5,211	79,708,178	16,673,997	0	2,199,552
36	Jun 2, 2021 11:58	5,222	71,107,197	16,710,458	0	2,203,648

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