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 29, 2022 16:12

Keichi Takahashi

Score: 5,334

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 29, 2022 16:12	5,287	44,065,815	14,927,000	1,990,000	2,387,968
2	May 29, 2022 16:31	5,291	32,106,744	14,940,000	1,992,000	2,387,968
3	May 29, 2022 16:29	5,294	41,189,404	14,949,000	1,993,000	2,527,232
4	May 29, 2022 16:31	5,300	49,095,859	15,963,000	997,000	2,265,088
5	May 29, 2022 16:31	5,300	31,963,971	14,964,000	1,995,000	2,387,968
6	May 29, 2022 16:12	5,301	41,347,783	14,969,000	1,995,000	2,265,088
7	May 29, 2022 16:31	5,303	48,015,383	14,974,000	1,996,000	2,265,088
8	May 29, 2022 16:29	5,304	46,816,102	15,974,000	998,000	2,265,088
9	May 29, 2022 16:31	5,304	45,692,386	15,975,000	998,000	2,383,872
10	May 29, 2022 16:25	5,311	43,100,543	15,995,000	999,000	2,387,968
11	May 29, 2022 16:12	5,314	49,043,950	16,006,000	1,000,000	2,387,968
12	May 29, 2022 16:25	5,315	32,988,252	16,009,000	1,000,000	2,265,088
13	May 29, 2022 16:25	5,315	44,428,493	15,008,000	2,001,000	2,387,968
14	May 29, 2022 16:31	5,315	37,802,622	16,009,000	1,000,000	2,527,232
15	May 29, 2022 16:25	5,316	44,633,223	16,010,000	1,000,000	2,379,776
16	May 29, 2022 16:25	5,317	44,195,946	16,014,000	1,000,000	2,387,968
17	May 29, 2022 16:29	5,318	47,514,630	15,016,000	2,002,000	2,392,064
18	May 29, 2022 16:25	5,318	31,928,096	16,018,000	1,001,000	2,387,968
19	May 29, 2022 16:29	5,319	49,431,085	15,020,000	2,002,000	2,392,064
20	May 29, 2022 16:31	5,321	46,949,199	15,024,000	2,003,000	2,265,088
21	May 29, 2022 16:29	5,321	44,785,223	16,027,000	1,001,000	2,383,872
22	May 29, 2022 16:29	5,329	33,339,376	15,047,000	2,006,000	2,387,968
23	May 29, 2022 16:12	5,331	39,545,535	15,052,000	2,006,000	2,514,944
24	May 29, 2022 16:31	5,331	46,040,902	17,058,000	0	2,265,088
25	May 29, 2022 16:12	5,334	41,757,597	16,064,000	1,004,000	2,265,088
26	May 29, 2022 16:12	5,334	34,419,807	16,065,000	1,004,000	2,506,752
27	May 29, 2022 16:12	5,338	45,151,224	16,079,000	1,004,000	2,265,088
28	May 29, 2022 16:12	5,340	44,644,801	16,084,000	1,005,000	2,265,088
29	May 29, 2022 16:29	5,344	42,470,475	15,090,000	2,012,000	2,387,968
30	May 29, 2022 16:31	5,345	32,763,120	16,099,000	1,006,000	2,265,088
31	May 29, 2022 16:12	5,346	43,947,781	16,100,000	1,006,000	2,265,088
32	May 29, 2022 16:29	5,347	42,856,603	16,105,000	1,006,000	2,502,656
33	May 29, 2022 16:25	5,350	44,988,757	15,107,000	2,014,000	2,265,088
34	May 29, 2022 16:25	5,352	41,824,727	16,118,000	1,007,000	2,265,088
35	May 29, 2022 16:25	5,355	31,974,448	15,120,000	2,016,000	2,387,968
36	May 29, 2022 16:29	5,364	48,452,455	15,145,000	2,019,000	2,392,064
37	May 29, 2022 16:12	5,493	94,509,341	17,577,825	0	2,277,376
38	May 29, 2022 16:31	5,497	98,308,971	17,589,251	0	2,285,568
39	May 29, 2022 16:25	5,498	89,887,576	17,593,523	0	2,281,472
40	May 29, 2022 16:29	5,505	84,972,526	17,617,198	0	2,277,376
41	May 29, 2022 16:25	5,505	80,907,489	17,616,967	0	2,277,376
42	May 29, 2022 16:29	5,508	92,198,121	17,624,802	0	2,273,280
43	May 29, 2022 16:12	5,518	77,389,831	17,658,056	0	2,285,568
44	May 29, 2022 16:31	5,522	84,007,741	17,671,886	0	2,273,280
45	May 29, 2022 16:12	5,524	79,880,784	17,676,032	0	2,285,568
46	May 29, 2022 16:29	5,531	70,527,826	17,698,292	0	2,281,472
47	May 29, 2022 16:25	5,534	78,865,661	17,707,211	0	2,285,568
48	May 29, 2022 16:31	5,549	83,832,881	17,756,554	0	2,269,184

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