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 listMar 28, 2026 21:44

olliecrowScore: 4,357Success

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	Mar 28, 2026 21:46	4,334	35,968,355	12,879,000	990,000	2,281,472
2	Mar 28, 2026 21:43	4,334	29,278,637	12,878,000	990,000	2,494,464
3	Mar 28, 2026 21:44	4,336	30,596,223	12,885,000	991,000	2,494,464
4	Mar 28, 2026 21:44	4,336	26,803,185	12,884,000	991,000	2,494,464
5	Mar 28, 2026 21:45	4,337	26,089,718	13,877,000	0	2,281,472
6	Mar 28, 2026 21:42	4,338	30,114,277	12,891,000	991,000	2,490,368
7	Mar 28, 2026 21:45	4,338	30,789,876	12,889,000	991,000	2,281,472
8	Mar 28, 2026 21:45	4,339	39,826,158	12,895,000	991,000	2,502,656
9	Mar 28, 2026 21:44	4,339	28,436,617	12,893,000	991,000	2,281,472
10	Mar 28, 2026 21:43	4,339	39,726,290	12,893,000	991,000	2,494,464
11	Mar 28, 2026 21:46	4,339	31,993,156	12,893,000	991,000	2,486,272
12	Mar 28, 2026 21:44	4,341	29,055,871	12,898,000	992,000	2,490,368
13	Mar 28, 2026 21:43	4,342	38,167,802	12,903,000	992,000	2,498,560
14	Mar 28, 2026 21:43	4,343	29,414,592	12,904,000	992,000	2,494,464
15	Mar 28, 2026 21:45	4,343	25,887,458	12,904,000	992,000	2,281,472
16	Mar 28, 2026 21:45	4,343	36,472,325	12,906,000	992,000	2,281,472
17	Mar 28, 2026 21:45	4,343	36,987,367	12,904,000	992,000	2,494,464
18	Mar 28, 2026 21:43	4,343	39,062,939	12,907,000	992,000	2,498,560
19	Mar 28, 2026 21:43	4,343	30,275,893	12,904,000	992,000	2,490,368
20	Mar 28, 2026 21:46	4,343	36,280,871	12,907,000	992,000	2,498,560
21	Mar 28, 2026 21:43	4,343	30,803,465	12,907,000	992,000	2,494,464
22	Mar 28, 2026 21:44	4,343	37,244,154	11,911,000	1,985,000	2,486,272
23	Mar 28, 2026 21:44	4,343	37,434,189	12,907,000	992,000	2,498,560
24	Mar 28, 2026 21:43	4,344	40,717,807	12,909,000	993,000	2,494,464
25	Mar 28, 2026 21:45	4,344	35,568,221	13,900,000	0	2,490,368
26	Mar 28, 2026 21:45	4,345	31,689,039	12,912,000	993,000	2,281,472
27	Mar 28, 2026 21:45	4,346	30,104,219	12,914,000	993,000	2,281,472
28	Mar 28, 2026 21:43	4,346	29,533,875	12,914,000	993,000	2,498,560
29	Mar 28, 2026 21:42	4,347	27,953,406	13,909,000	0	2,281,472
30	Mar 28, 2026 21:44	4,348	29,366,516	12,920,000	993,000	2,535,424
31	Mar 28, 2026 21:43	4,351	37,124,476	13,923,000	0	2,494,464
32	Mar 28, 2026 21:44	4,351	29,900,171	13,922,000	0	2,498,560
33	Mar 28, 2026 21:43	4,351	38,206,632	13,923,000	0	2,490,368
34	Mar 28, 2026 21:43	4,351	26,333,637	12,930,000	994,000	2,281,472
35	Mar 28, 2026 21:46	4,351	38,813,022	12,929,000	994,000	2,281,472
36	Mar 28, 2026 21:46	4,352	27,152,975	12,932,000	994,000	2,281,472
37	Mar 28, 2026 21:45	4,352	29,358,589	12,931,000	994,000	2,281,472
38	Mar 28, 2026 21:44	4,352	39,000,189	12,931,000	994,000	2,490,368
39	Mar 28, 2026 21:44	4,352	30,282,285	11,937,000	1,989,000	2,281,472
40	Mar 28, 2026 21:42	4,353	44,577,814	11,940,000	1,990,000	2,498,560
41	Mar 28, 2026 21:46	4,353	35,320,856	12,934,000	994,000	2,281,472
42	Mar 28, 2026 21:43	4,354	26,631,847	12,938,000	995,000	2,281,472
43	Mar 28, 2026 21:45	4,356	31,905,905	13,938,000	0	2,490,368
44	Mar 28, 2026 21:44	4,357	36,606,228	12,946,000	995,000	2,498,560
45	Mar 28, 2026 21:45	4,357	35,739,172	11,951,000	1,991,000	2,281,472
46	Mar 28, 2026 21:45	4,357	31,234,702	11,950,000	1,991,000	2,494,464
47	Mar 28, 2026 21:44	4,358	29,076,193	12,950,000	996,000	2,490,368
48	Mar 28, 2026 21:45	4,358	33,499,520	12,950,000	996,000	2,494,464
49	Mar 28, 2026 21:44	4,358	33,544,399	12,950,000	996,000	2,281,472
50	Mar 28, 2026 21:44	4,358	29,338,764	12,950,000	996,000	2,486,272
51	Mar 28, 2026 21:44	4,358	36,737,259	12,950,000	996,000	2,535,424
52	Mar 28, 2026 21:45	4,358	31,560,055	11,952,000	1,992,000	2,281,472
53	Mar 28, 2026 21:43	4,358	26,720,649	11,954,000	1,992,000	2,490,368
54	Mar 28, 2026 21:45	4,359	31,403,815	12,953,000	996,000	2,494,464
55	Mar 28, 2026 21:43	4,359	33,709,897	12,954,000	996,000	2,498,560
56	Mar 28, 2026 21:46	4,359	41,071,137	12,952,000	996,000	2,490,368
57	Mar 28, 2026 21:43	4,360	30,860,066	12,956,000	996,000	2,281,472
58	Mar 28, 2026 21:44	4,360	45,857,473	11,959,000	1,993,000	2,494,464
59	Mar 28, 2026 21:43	4,361	33,631,738	12,958,000	996,000	2,490,368
60	Mar 28, 2026 21:45	4,362	31,283,317	11,965,000	1,994,000	2,498,560
61	Mar 28, 2026 21:45	4,363	32,629,067	11,967,000	1,994,000	2,494,464
62	Mar 28, 2026 21:46	4,363	35,254,094	12,964,000	997,000	2,281,472
63	Mar 28, 2026 21:44	4,363	31,117,359	12,964,000	997,000	2,281,472
64	Mar 28, 2026 21:46	4,364	27,268,690	12,969,000	997,000	2,281,472
65	Mar 28, 2026 21:43	4,367	41,845,218	12,975,000	998,000	2,494,464
66	Mar 28, 2026 21:45	4,367	41,427,056	12,976,000	998,000	2,490,368
67	Mar 28, 2026 21:43	4,367	33,650,474	11,979,000	1,996,000	2,281,472
68	Mar 28, 2026 21:42	4,367	33,377,518	12,975,000	998,000	2,494,464
69	Mar 28, 2026 21:42	4,368	35,046,831	12,979,000	998,000	2,478,080
70	Mar 28, 2026 21:44	4,368	37,082,183	11,982,000	1,997,000	2,486,272
71	Mar 28, 2026 21:45	4,369	25,018,867	12,982,000	998,000	2,490,368
72	Mar 28, 2026 21:45	4,370	37,885,922	12,985,000	998,000	2,281,472
73	Mar 28, 2026 21:43	4,370	32,232,910	12,985,000	998,000	2,494,464
74	Mar 28, 2026 21:43	4,371	29,960,181	12,988,000	999,000	2,281,472
75	Mar 28, 2026 21:43	4,371	29,869,756	11,989,000	1,998,000	2,494,464
76	Mar 28, 2026 21:46	4,371	31,624,645	11,988,000	1,998,000	2,494,464
77	Mar 28, 2026 21:43	4,371	29,919,314	12,987,000	999,000	2,281,472
78	Mar 28, 2026 21:44	4,372	33,287,877	11,993,000	1,998,000	2,494,464
79	Mar 28, 2026 21:46	4,373	33,388,019	12,993,000	999,000	2,281,472
80	Mar 28, 2026 21:43	4,381	37,243,366	13,019,000	1,001,000	2,281,472
81	Mar 28, 2026 21:44	4,381	36,129,254	12,017,000	2,002,000	2,281,472
82	Mar 28, 2026 21:45	4,383	32,645,152	13,025,000	1,001,000	2,281,472
83	Mar 28, 2026 21:42	4,386	29,507,299	13,033,000	1,002,000	2,490,368
84	Mar 28, 2026 21:44	4,388	28,970,444	12,036,000	2,006,000	2,490,368
85	Mar 28, 2026 21:46	4,390	30,852,935	14,048,000	0	2,281,472
86	Mar 28, 2026 21:45	4,396	35,411,027	13,063,000	1,004,000	2,498,560
87	Mar 28, 2026 21:44	4,491	42,270,613	13,345,000	1,026,000	2,494,464
88	Mar 28, 2026 21:44	4,518	39,950,013	13,427,000	1,032,000	2,281,472
89	Mar 28, 2026 21:44	4,523	29,940,781	14,475,000	0	2,494,464
90	Mar 28, 2026 21:45	4,727	40,619,611	14,118,000	1,008,000	2,281,472

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