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 15:53

Keichi Takahashi

Score: 5,318

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 15:53	5,276	41,932,940	14,897,000	1,986,000	2,527,232
2	May 29, 2022 15:53	5,280	44,027,423	15,841,000	1,056,000	2,527,232
3	May 29, 2022 15:53	5,281	42,909,215	15,844,000	1,056,000	2,265,088
4	May 29, 2022 15:53	5,284	33,786,541	14,921,000	1,989,000	2,392,064
5	May 29, 2022 15:03	5,285	36,355,502	14,922,000	1,989,000	2,383,872
6	May 29, 2022 15:03	5,290	38,855,501	14,936,000	1,991,000	2,375,680
7	May 29, 2022 15:53	5,290	41,600,366	15,932,000	995,000	2,265,088
8	May 29, 2022 15:53	5,291	44,802,215	15,935,000	995,000	2,392,064
9	May 29, 2022 15:53	5,293	41,734,134	14,945,000	1,992,000	2,265,088
10	May 29, 2022 15:53	5,293	31,799,660	14,944,000	1,992,000	2,506,752
11	May 29, 2022 15:53	5,295	44,752,142	14,952,000	1,993,000	2,265,088
12	May 29, 2022 15:53	5,296	34,970,272	15,951,000	996,000	2,265,088
13	May 29, 2022 15:53	5,297	42,002,975	14,956,000	1,994,000	2,387,968
14	May 29, 2022 15:03	5,298	46,503,623	14,958,000	1,994,000	2,265,088
15	May 29, 2022 15:53	5,301	40,486,750	15,967,000	997,000	2,265,088
16	May 29, 2022 15:03	5,301	47,961,463	14,968,000	1,995,000	2,527,232
17	May 29, 2022 15:53	5,303	34,138,902	14,974,000	1,996,000	2,392,064
18	May 29, 2022 15:53	5,303	44,816,600	14,974,000	1,996,000	2,396,160
19	May 29, 2022 15:53	5,304	42,256,338	15,975,000	998,000	2,265,088
20	May 29, 2022 15:53	5,306	41,148,484	14,982,000	1,997,000	2,396,160
21	May 29, 2022 15:53	5,309	50,213,649	14,991,000	1,998,000	2,506,752
22	May 29, 2022 15:53	5,309	44,876,335	15,990,000	999,000	2,265,088
23	May 29, 2022 15:03	5,310	42,340,344	14,994,000	1,999,000	2,265,088
24	May 29, 2022 15:53	5,313	50,099,848	16,000,000	1,000,000	2,265,088
25	May 29, 2022 15:53	5,313	49,599,052	15,001,000	2,000,000	2,383,872
26	May 29, 2022 15:53	5,314	49,209,006	16,006,000	1,000,000	2,396,160
27	May 29, 2022 15:53	5,316	38,024,654	16,011,000	1,000,000	2,396,160
28	May 29, 2022 15:53	5,316	38,080,836	16,011,000	1,000,000	2,387,968
29	May 29, 2022 15:53	5,317	45,130,338	16,013,000	1,000,000	2,265,088
30	May 29, 2022 15:53	5,318	45,204,472	16,018,000	1,001,000	2,396,160
31	May 29, 2022 15:53	5,318	40,302,269	17,019,000	0	2,383,872
32	May 29, 2022 15:53	5,318	38,106,685	15,016,000	2,002,000	2,527,232
33	May 29, 2022 15:53	5,319	40,434,542	16,021,000	1,001,000	2,506,752
34	May 29, 2022 15:53	5,319	33,617,025	15,018,000	2,002,000	2,265,088
35	May 29, 2022 15:53	5,320	38,618,119	15,021,000	2,002,000	2,265,088
36	May 29, 2022 15:53	5,320	52,740,865	16,022,000	1,001,000	2,265,088
37	May 29, 2022 15:03	5,327	41,887,028	16,043,000	1,002,000	2,265,088
38	May 29, 2022 15:53	5,330	34,320,143	15,050,000	2,006,000	2,383,872
39	May 29, 2022 15:53	5,334	36,192,900	16,065,000	1,004,000	2,265,088
40	May 29, 2022 15:03	5,334	42,827,367	15,061,000	2,008,000	2,265,088
41	May 29, 2022 15:53	5,338	47,370,168	17,081,000	0	2,265,088
42	May 29, 2022 15:03	5,338	46,336,519	15,073,000	2,009,000	2,265,088
43	May 29, 2022 15:53	5,342	42,709,793	16,088,000	1,005,000	2,396,160
44	May 29, 2022 15:53	5,353	34,948,400	15,113,000	2,015,000	2,383,872
45	May 29, 2022 15:03	5,357	42,106,632	16,135,000	1,008,000	2,265,088
46	May 29, 2022 15:03	5,495	103,802,274	17,585,285	0	2,281,472
47	May 29, 2022 15:53	5,505	87,554,632	17,617,070	0	2,281,472
48	May 29, 2022 15:03	5,507	60,482,352	17,622,161	0	2,277,376
49	May 29, 2022 15:53	5,509	91,932,601	17,627,992	0	2,289,664
50	May 29, 2022 15:53	5,511	79,425,249	17,636,220	0	2,281,472
51	May 29, 2022 15:53	5,512	98,949,572	17,637,033	0	2,273,280
52	May 29, 2022 15:03	5,514	90,413,257	17,643,205	0	2,281,472
53	May 29, 2022 15:53	5,529	81,233,694	17,691,454	0	2,289,664
54	May 29, 2022 15:53	5,531	98,855,113	17,698,710	0	2,289,664
55	May 29, 2022 15:53	5,533	82,676,023	17,706,352	0	2,273,280
56	May 29, 2022 15:53	5,535	86,143,831	17,713,594	0	2,281,472
57	May 29, 2022 15:53	5,540	80,990,549	17,726,576	0	2,281,472
58	May 29, 2022 15:53	5,541	84,176,814	17,732,523	0	2,285,568
59	May 29, 2022 15:53	5,566	103,498,484	17,811,637	0	2,289,664
60	May 29, 2022 15:53	5,566	87,848,683	17,811,261	0	2,281,472

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