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 listJan 2, 2026 04:05

HattonuriScore: 4,419Success

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	Jan 2, 2026 04:06	4,383	34,609,034	12,947,000	1,078,000	2,441,216
2	Jan 2, 2026 04:05	4,388	33,060,921	12,037,000	2,006,000	2,281,472
3	Jan 2, 2026 04:06	4,389	28,276,866	12,040,000	2,006,000	2,445,312
4	Jan 2, 2026 04:06	4,390	29,237,715	12,041,000	2,006,000	2,281,472
5	Jan 2, 2026 04:06	4,393	32,013,890	12,050,000	2,008,000	2,445,312
6	Jan 2, 2026 04:05	4,393	37,484,549	12,051,000	2,008,000	2,281,472
7	Jan 2, 2026 04:05	4,398	35,150,953	12,065,000	2,010,000	2,453,504
8	Jan 2, 2026 04:05	4,399	28,978,541	12,067,000	2,011,000	2,445,312
9	Jan 2, 2026 04:06	4,400	35,553,305	12,070,000	2,011,000	2,445,312
10	Jan 2, 2026 04:06	4,402	32,977,009	12,073,000	2,012,000	2,535,424
11	Jan 2, 2026 04:06	4,403	40,265,932	12,077,000	2,012,000	2,281,472
12	Jan 2, 2026 04:05	4,404	35,138,125	12,081,000	2,013,000	2,281,472
13	Jan 2, 2026 04:05	4,406	29,524,836	12,086,000	2,014,000	2,281,472
14	Jan 2, 2026 04:05	4,407	36,753,606	12,088,000	2,014,000	2,445,312
15	Jan 2, 2026 04:06	4,407	35,742,387	12,089,000	2,014,000	2,441,216
16	Jan 2, 2026 04:06	4,408	32,789,678	12,090,000	2,015,000	2,453,504
17	Jan 2, 2026 04:05	4,409	40,657,486	12,094,000	2,015,000	2,281,472
18	Jan 2, 2026 04:06	4,412	42,986,004	12,101,000	2,016,000	2,445,312
19	Jan 2, 2026 04:06	4,413	36,048,375	12,105,000	2,017,000	2,281,472
20	Jan 2, 2026 04:05	4,414	44,018,846	12,107,000	2,017,000	2,281,472
21	Jan 2, 2026 04:06	4,414	28,282,221	12,108,000	2,018,000	2,281,472
22	Jan 2, 2026 04:06	4,414	28,001,439	12,107,000	2,017,000	2,281,472
23	Jan 2, 2026 04:05	4,415	28,315,269	12,111,000	2,018,000	2,449,408
24	Jan 2, 2026 04:05	4,417	28,408,309	12,115,000	2,019,000	2,453,504
25	Jan 2, 2026 04:06	4,417	29,566,444	13,126,000	1,009,000	2,441,216
26	Jan 2, 2026 04:06	4,418	35,742,659	12,117,000	2,019,000	2,281,472
27	Jan 2, 2026 04:06	4,418	31,056,200	13,050,000	1,087,000	2,273,280
28	Jan 2, 2026 04:06	4,419	29,161,818	12,121,000	2,020,000	2,449,408
29	Jan 2, 2026 04:05	4,419	32,380,606	12,121,000	2,020,000	2,281,472
30	Jan 2, 2026 04:05	4,421	36,903,147	12,126,000	2,021,000	2,281,472
31	Jan 2, 2026 04:06	4,423	32,661,444	12,131,000	2,021,000	2,453,504
32	Jan 2, 2026 04:05	4,424	30,433,126	12,134,000	2,022,000	2,281,472
33	Jan 2, 2026 04:05	4,424	28,579,376	12,134,000	2,022,000	2,281,472
34	Jan 2, 2026 04:06	4,426	35,572,745	12,141,000	2,023,000	2,281,472
35	Jan 2, 2026 04:05	4,426	31,862,063	12,140,000	2,023,000	2,449,408
36	Jan 2, 2026 04:06	4,430	30,064,308	12,152,000	2,025,000	2,535,424
37	Jan 2, 2026 04:06	4,431	36,915,883	12,155,000	2,025,000	2,281,472
38	Jan 2, 2026 04:05	4,432	27,776,456	12,156,000	2,026,000	2,281,472
39	Jan 2, 2026 04:05	4,433	29,938,303	12,161,000	2,026,000	2,527,232
40	Jan 2, 2026 04:05	4,436	26,118,500	12,167,000	2,027,000	2,445,312
41	Jan 2, 2026 04:06	4,437	35,107,699	12,170,000	2,028,000	2,445,312
42	Jan 2, 2026 04:05	4,437	30,047,065	13,183,000	1,014,000	2,281,472
43	Jan 2, 2026 04:06	4,438	33,217,144	12,174,000	2,029,000	2,449,408
44	Jan 2, 2026 04:05	4,444	30,003,027	13,206,000	1,015,000	2,523,136
45	Jan 2, 2026 04:06	4,452	27,652,123	12,210,000	2,035,000	2,277,376
46	Jan 2, 2026 04:05	4,455	28,265,911	12,220,000	2,036,000	2,453,504
47	Jan 2, 2026 04:05	4,457	35,889,441	12,226,000	2,037,000	2,281,472
48	Jan 2, 2026 04:06	4,460	33,515,968	13,252,000	1,019,000	2,281,472
49	Jan 2, 2026 04:06	4,468	34,423,984	13,276,000	1,021,000	2,445,312
50	Jan 2, 2026 04:05	4,468	28,509,280	13,277,000	1,021,000	2,281,472
51	Jan 2, 2026 04:05	4,478	39,880,859	13,307,000	1,023,000	2,449,408
52	Jan 2, 2026 04:06	4,503	35,165,377	13,381,000	1,029,000	2,281,472
53	Jan 2, 2026 04:05	4,592	36,358,204	13,646,000	1,049,000	2,445,312
54	Jan 2, 2026 04:05	4,627	38,658,248	13,749,000	1,057,000	2,273,280

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