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 24, 2024 00:59

emily graceScore: 4,674Success

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 24, 2024 00:57	4,645	31,404,240	13,873,000	990,000	2,289,664
2	Jul 24, 2024 00:59	4,648	39,208,598	13,810,000	1,062,000	2,289,664
3	Jul 24, 2024 00:57	4,651	31,653,697	13,891,000	992,000	2,289,664
4	Jul 24, 2024 00:59	4,652	39,437,818	12,901,000	1,984,000	2,289,664
5	Jul 24, 2024 00:57	4,652	30,244,996	13,894,000	992,000	2,273,280
6	Jul 24, 2024 00:59	4,653	31,900,301	12,906,000	1,985,000	2,265,088
7	Jul 24, 2024 01:03	4,657	40,559,518	13,910,000	993,000	2,277,376
8	Jul 24, 2024 00:57	4,658	32,069,647	13,843,000	1,064,000	2,387,968
9	Jul 24, 2024 00:57	4,659	32,985,593	12,922,000	1,988,000	2,289,664
10	Jul 24, 2024 01:03	4,663	38,688,740	12,934,000	1,989,000	2,273,280
11	Jul 24, 2024 00:59	4,663	37,010,932	13,929,000	994,000	2,273,280
12	Jul 24, 2024 01:03	4,663	42,507,835	13,855,000	1,065,000	2,269,184
13	Jul 24, 2024 01:03	4,665	32,673,823	12,939,000	1,990,000	2,273,280
14	Jul 24, 2024 01:03	4,667	32,033,372	12,942,000	1,991,000	2,269,184
15	Jul 24, 2024 01:03	4,668	38,911,003	12,946,000	1,991,000	2,289,664
16	Jul 24, 2024 00:57	4,669	37,461,207	12,949,000	1,992,000	2,273,280
17	Jul 24, 2024 00:59	4,672	33,392,248	12,957,000	1,993,000	2,289,664
18	Jul 24, 2024 00:57	4,673	31,295,368	13,956,000	996,000	2,273,280
19	Jul 24, 2024 00:59	4,674	36,697,466	12,963,000	1,994,000	2,289,664
20	Jul 24, 2024 00:59	4,681	31,642,654	12,983,000	1,997,000	2,392,064
21	Jul 24, 2024 00:59	4,682	32,798,479	12,984,000	1,997,000	2,269,184
22	Jul 24, 2024 00:57	4,686	31,239,449	12,997,000	1,999,000	2,285,568
23	Jul 24, 2024 00:59	4,689	36,583,562	13,005,000	2,000,000	2,289,664
24	Jul 24, 2024 01:03	4,690	34,443,281	13,007,000	2,001,000	2,289,664
25	Jul 24, 2024 01:03	4,695	30,843,510	14,024,000	1,001,000	2,289,664
26	Jul 24, 2024 01:03	4,707	34,755,897	13,055,000	2,008,000	2,277,376
27	Jul 24, 2024 00:57	4,718	46,290,078	13,084,000	2,012,000	2,277,376
28	Jul 24, 2024 00:57	4,885	74,884,227	15,630,903	0	2,297,856
29	Jul 24, 2024 00:59	4,910	86,676,430	15,712,198	0	2,297,856
30	Jul 24, 2024 01:03	4,919	83,421,221	15,739,401	0	2,293,760
31	Jul 24, 2024 00:57	4,922	102,044,694	15,749,401	0	2,256,896
32	Jul 24, 2024 00:57	4,930	82,183,039	15,774,826	0	2,306,048
33	Jul 24, 2024 01:03	4,936	83,904,116	15,794,697	0	2,306,048
34	Jul 24, 2024 00:59	4,943	78,533,942	15,817,063	0	2,293,760
35	Jul 24, 2024 01:03	4,951	96,407,088	15,843,610	0	2,297,856
36	Jul 24, 2024 00:59	4,956	91,695,758	15,858,442	0	2,306,048

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