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 19, 2021 23:31

Yuriy Lyfenko

Score: 5,303

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 19, 2021 23:32	5,233	50,163,495	15,698,000	1,046,000	2,519,040
2	May 19, 2021 23:37	5,259	33,544,416	12,870,000	3,960,000	2,523,136
3	May 19, 2021 23:32	5,268	45,691,173	14,875,000	1,983,000	2,519,040
4	May 19, 2021 23:32	5,271	45,831,288	16,866,000	0	2,519,040
5	May 19, 2021 23:32	5,272	42,687,350	15,877,000	992,000	2,519,040
6	May 19, 2021 23:37	5,272	50,749,278	15,879,000	992,000	2,260,992
7	May 19, 2021 23:37	5,273	32,771,191	14,889,000	1,985,000	2,387,968
8	May 19, 2021 23:31	5,273	37,682,553	15,882,000	992,000	2,519,040
9	May 19, 2021 23:31	5,274	40,838,284	15,886,000	992,000	2,383,872
10	May 19, 2021 23:37	5,274	33,191,218	14,893,000	1,985,000	2,260,992
11	May 19, 2021 23:37	5,274	33,691,747	14,893,000	1,985,000	2,387,968
12	May 19, 2021 23:31	5,275	42,453,648	15,888,000	993,000	2,519,040
13	May 19, 2021 23:32	5,275	40,266,834	14,894,000	1,985,000	2,392,064
14	May 19, 2021 23:31	5,276	32,194,437	14,896,000	1,986,000	2,519,040
15	May 19, 2021 23:32	5,277	41,033,469	14,900,000	1,986,000	2,383,872
16	May 19, 2021 23:31	5,278	44,179,936	13,911,000	2,980,000	2,387,968
17	May 19, 2021 23:37	5,279	42,682,447	14,907,000	1,987,000	2,265,088
18	May 19, 2021 23:31	5,281	45,282,999	14,912,000	1,988,000	2,519,040
19	May 19, 2021 23:37	5,283	47,101,323	15,850,000	1,056,000	2,260,992
20	May 19, 2021 23:32	5,298	44,610,854	15,958,000	997,000	2,519,040
21	May 19, 2021 23:37	5,299	49,974,545	14,963,000	1,995,000	2,396,160
22	May 19, 2021 23:37	5,303	43,291,036	14,974,000	1,996,000	2,527,232
23	May 19, 2021 23:31	5,303	44,192,358	15,970,000	998,000	2,383,872
24	May 19, 2021 23:31	5,308	34,587,009	14,986,000	1,998,000	2,383,872
25	May 19, 2021 23:32	5,309	31,457,825	15,989,000	999,000	2,519,040
26	May 19, 2021 23:31	5,309	32,131,152	14,991,000	1,998,000	2,519,040
27	May 19, 2021 23:32	5,314	33,678,141	16,005,000	1,000,000	2,392,064
28	May 19, 2021 23:37	5,475	93,000,451	17,521,297	0	2,277,376
29	May 19, 2021 23:37	5,503	84,712,253	17,608,582	0	2,277,376
30	May 19, 2021 23:32	5,518	64,076,826	17,658,314	0	2,273,280
31	May 19, 2021 23:31	5,520	89,776,520	17,664,785	0	2,285,568
32	May 19, 2021 23:37	5,521	93,620,592	17,665,986	0	2,285,568
33	May 19, 2021 23:37	5,527	88,398,046	17,685,793	0	2,285,568
34	May 19, 2021 23:32	5,531	81,490,516	17,700,197	0	2,281,472
35	May 19, 2021 23:32	5,533	85,730,341	17,705,072	0	2,281,472
36	May 19, 2021 23:32	5,537	82,869,428	17,717,367	0	2,281,472
37	May 19, 2021 23:37	5,540	81,541,621	17,727,621	0	2,285,568
38	May 19, 2021 23:31	5,541	87,991,989	17,730,759	0	2,277,376
39	May 19, 2021 23:32	5,556	86,294,507	17,778,236	0	2,293,760
40	May 19, 2021 23:37	5,563	72,962,431	17,800,402	0	2,285,568
41	May 19, 2021 23:32	5,568	74,588,721	17,817,839	0	2,269,184
42	May 19, 2021 23:31	5,570	72,955,112	17,822,862	0	2,277,376
43	May 19, 2021 23:31	5,583	81,535,605	17,866,431	0	2,273,280
44	May 19, 2021 23:31	5,613	96,449,610	17,960,434	0	2,281,472
45	May 19, 2021 23:31	5,722	85,305,203	18,311,409	0	2,281,472

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