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 20, 2024 11:58

Matt Stuchlik

Score: 4,685

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 20, 2024 11:58	4,657	34,531,072	12,916,000	1,987,000	2,289,664
2	Jul 20, 2024 11:58	4,658	35,989,820	12,918,000	1,987,000	2,289,664
3	Jul 20, 2024 11:58	4,659	34,663,299	12,921,000	1,987,000	2,289,664
4	Jul 20, 2024 11:58	4,663	36,877,393	13,927,000	994,000	2,289,664
5	Jul 20, 2024 11:58	4,666	32,552,478	13,935,000	995,000	2,269,184
6	Jul 20, 2024 11:58	4,669	33,228,759	12,950,000	1,992,000	2,289,664
7	Jul 20, 2024 11:58	4,670	32,079,995	12,952,000	1,992,000	2,289,664
8	Jul 20, 2024 11:58	4,673	32,156,675	12,960,000	1,993,000	2,289,664
9	Jul 20, 2024 11:58	4,674	35,586,356	12,962,000	1,994,000	2,289,664
10	Jul 20, 2024 11:58	4,674	40,322,506	12,962,000	1,994,000	2,523,136
11	Jul 20, 2024 11:58	4,675	37,549,930	12,965,000	1,994,000	2,269,184
12	Jul 20, 2024 11:58	4,676	28,775,694	12,968,000	1,995,000	2,383,872
13	Jul 20, 2024 11:58	4,678	32,138,009	12,975,000	1,996,000	2,527,232
14	Jul 20, 2024 11:58	4,678	42,315,766	12,974,000	1,996,000	2,289,664
15	Jul 20, 2024 11:58	4,682	41,421,236	13,984,000	998,000	2,265,088
16	Jul 20, 2024 11:58	4,684	33,325,393	12,992,000	1,998,000	2,289,664
17	Jul 20, 2024 11:58	4,684	26,630,350	13,989,000	999,000	2,285,568
18	Jul 20, 2024 11:58	4,685	31,754,908	12,993,000	1,998,000	2,273,280
19	Jul 20, 2024 11:58	4,685	37,497,974	13,992,000	999,000	2,265,088
20	Jul 20, 2024 11:58	4,690	38,278,129	13,007,000	2,001,000	2,289,664
21	Jul 20, 2024 11:58	4,691	33,016,322	13,010,000	2,001,000	2,265,088
22	Jul 20, 2024 11:58	4,693	39,795,599	13,017,000	2,002,000	2,289,664
23	Jul 20, 2024 11:58	4,696	41,253,239	13,023,000	2,003,000	2,269,184
24	Jul 20, 2024 11:58	4,698	37,191,435	13,030,000	2,004,000	2,289,664
25	Jul 20, 2024 11:58	4,700	30,015,001	13,035,000	2,005,000	2,523,136
26	Jul 20, 2024 11:58	4,701	32,867,647	13,038,000	2,005,000	2,531,328
27	Jul 20, 2024 11:58	4,713	36,188,894	13,072,000	2,011,000	2,289,664
28	Jul 20, 2024 11:58	4,926	110,378,712	15,763,530	0	2,293,760
29	Jul 20, 2024 11:58	4,938	78,774,580	15,801,074	0	2,281,472
30	Jul 20, 2024 11:58	4,939	70,026,428	15,806,374	0	2,293,760
31	Jul 20, 2024 11:58	4,946	93,604,059	15,828,720	0	2,285,568
32	Jul 20, 2024 11:58	4,949	90,659,973	15,837,358	0	2,293,760
33	Jul 20, 2024 11:58	4,957	76,189,420	15,861,670	0	2,289,664
34	Jul 20, 2024 11:58	4,958	84,057,505	15,866,699	0	2,285,568
35	Jul 20, 2024 11:58	4,961	99,926,468	15,875,373	0	2,281,472
36	Jul 20, 2024 11:58	4,962	74,708,724	15,877,619	0	2,293,760

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