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 14:04

olliecrowScore: 4,349Success

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 14:07	4,329	27,916,478	12,863,000	989,000	2,490,368
2	Mar 28, 2026 14:05	4,331	35,108,817	13,859,000	0	2,281,472
3	Mar 28, 2026 14:07	4,332	28,728,415	12,872,000	990,000	2,498,560
4	Mar 28, 2026 14:05	4,332	39,212,607	12,872,000	990,000	2,498,560
5	Mar 28, 2026 14:06	4,332	37,512,074	12,873,000	990,000	2,498,560
6	Mar 28, 2026 14:08	4,333	29,347,667	12,875,000	990,000	2,490,368
7	Mar 28, 2026 14:06	4,335	26,835,563	13,871,000	0	2,498,560
8	Mar 28, 2026 14:04	4,336	35,891,304	13,875,000	0	2,494,464
9	Mar 28, 2026 14:05	4,336	28,662,314	13,874,000	0	2,535,424
10	Mar 28, 2026 14:07	4,336	32,669,881	12,884,000	991,000	2,494,464
11	Mar 28, 2026 14:06	4,336	30,919,387	12,884,000	991,000	2,498,560
12	Mar 28, 2026 14:07	4,337	29,855,207	12,887,000	991,000	2,502,656
13	Mar 28, 2026 14:08	4,337	24,950,787	12,886,000	991,000	2,486,272
14	Mar 28, 2026 14:05	4,337	29,753,395	13,877,000	0	2,506,752
15	Mar 28, 2026 14:04	4,339	41,628,962	12,894,000	991,000	2,502,656
16	Mar 28, 2026 14:04	4,339	28,252,411	12,894,000	991,000	2,498,560
17	Mar 28, 2026 14:07	4,339	39,740,657	12,893,000	991,000	2,498,560
18	Mar 28, 2026 14:06	4,340	29,084,906	12,897,000	992,000	2,494,464
19	Mar 28, 2026 14:06	4,341	30,144,101	12,899,000	992,000	2,281,472
20	Mar 28, 2026 14:05	4,341	33,262,153	12,898,000	992,000	2,281,472
21	Mar 28, 2026 14:07	4,341	36,823,622	12,899,000	992,000	2,498,560
22	Mar 28, 2026 14:03	4,341	28,966,932	11,908,000	1,984,000	2,281,472
23	Mar 28, 2026 14:04	4,341	29,812,022	12,899,000	992,000	2,490,368
24	Mar 28, 2026 14:07	4,342	27,464,126	13,894,000	0	2,281,472
25	Mar 28, 2026 14:06	4,342	29,660,209	12,903,000	992,000	2,502,656
26	Mar 28, 2026 14:06	4,342	30,013,927	12,901,000	992,000	2,281,472
27	Mar 28, 2026 14:05	4,342	45,739,175	12,903,000	992,000	2,281,472
28	Mar 28, 2026 14:04	4,342	36,212,881	11,910,000	1,985,000	2,498,560
29	Mar 28, 2026 14:05	4,342	30,941,343	12,903,000	992,000	2,486,272
30	Mar 28, 2026 14:04	4,342	37,539,600	12,902,000	992,000	2,502,656
31	Mar 28, 2026 14:06	4,343	30,918,010	13,899,000	0	2,277,376
32	Mar 28, 2026 14:06	4,344	36,856,807	12,908,000	992,000	2,494,464
33	Mar 28, 2026 14:07	4,345	31,001,511	12,911,000	993,000	2,498,560
34	Mar 28, 2026 14:07	4,345	31,742,327	12,912,000	993,000	2,281,472
35	Mar 28, 2026 14:06	4,345	40,628,181	13,904,000	0	2,498,560
36	Mar 28, 2026 14:07	4,347	30,014,676	12,916,000	993,000	2,498,560
37	Mar 28, 2026 14:08	4,347	36,774,760	12,916,000	993,000	2,502,656
38	Mar 28, 2026 14:07	4,348	36,720,979	12,921,000	993,000	2,490,368
39	Mar 28, 2026 14:05	4,349	39,627,784	12,847,000	1,070,000	2,486,272
40	Mar 28, 2026 14:07	4,349	30,136,921	12,923,000	994,000	2,281,472
41	Mar 28, 2026 14:04	4,349	31,883,372	12,922,000	994,000	2,498,560
42	Mar 28, 2026 14:04	4,349	33,836,005	12,923,000	994,000	2,281,472
43	Mar 28, 2026 14:04	4,349	29,479,576	12,924,000	994,000	2,281,472
44	Mar 28, 2026 14:08	4,349	30,827,703	12,923,000	994,000	2,281,472
45	Mar 28, 2026 14:04	4,349	29,782,527	13,917,000	0	2,498,560
46	Mar 28, 2026 14:07	4,349	27,662,266	13,918,000	0	2,494,464
47	Mar 28, 2026 14:07	4,349	46,788,420	13,917,000	0	2,490,368
48	Mar 28, 2026 14:06	4,349	38,814,332	12,923,000	994,000	2,281,472
49	Mar 28, 2026 14:05	4,350	27,073,470	12,926,000	994,000	2,281,472
50	Mar 28, 2026 14:04	4,350	31,397,382	12,926,000	994,000	2,498,560
51	Mar 28, 2026 14:07	4,351	28,873,876	12,930,000	994,000	2,494,464
52	Mar 28, 2026 14:04	4,351	31,539,942	12,929,000	994,000	2,281,472
53	Mar 28, 2026 14:06	4,352	29,122,155	12,931,000	994,000	2,494,464
54	Mar 28, 2026 14:06	4,353	29,550,083	12,934,000	994,000	2,281,472
55	Mar 28, 2026 14:05	4,353	26,946,595	11,940,000	1,990,000	2,535,424
56	Mar 28, 2026 14:06	4,354	29,852,328	12,938,000	995,000	2,494,464
57	Mar 28, 2026 14:04	4,354	46,605,262	12,938,000	995,000	2,498,560
58	Mar 28, 2026 14:05	4,355	33,849,008	12,942,000	995,000	2,494,464
59	Mar 28, 2026 14:06	4,356	32,741,727	12,943,000	995,000	2,281,472
60	Mar 28, 2026 14:06	4,358	30,003,681	12,950,000	996,000	2,498,560
61	Mar 28, 2026 14:07	4,358	29,355,688	12,949,000	996,000	2,498,560
62	Mar 28, 2026 14:07	4,360	29,905,003	12,956,000	996,000	2,494,464
63	Mar 28, 2026 14:04	4,361	29,622,790	11,962,000	1,993,000	2,498,560
64	Mar 28, 2026 14:07	4,361	29,389,583	12,958,000	996,000	2,281,472
65	Mar 28, 2026 14:08	4,362	30,539,075	11,964,000	1,994,000	2,486,272
66	Mar 28, 2026 14:03	4,363	25,950,842	11,967,000	1,994,000	2,494,464
67	Mar 28, 2026 14:06	4,363	29,054,892	12,966,000	997,000	2,498,560
68	Mar 28, 2026 14:04	4,363	46,772,369	12,965,000	997,000	2,486,272
69	Mar 28, 2026 14:05	4,363	26,157,718	12,966,000	997,000	2,281,472
70	Mar 28, 2026 14:07	4,364	35,434,879	11,970,000	1,995,000	2,490,368
71	Mar 28, 2026 14:05	4,365	26,045,658	12,972,000	997,000	2,281,472
72	Mar 28, 2026 14:07	4,366	44,810,917	12,974,000	998,000	2,281,472
73	Mar 28, 2026 14:04	4,366	27,827,791	12,973,000	997,000	2,281,472
74	Mar 28, 2026 14:06	4,366	33,334,807	12,973,000	997,000	2,281,472
75	Mar 28, 2026 14:05	4,367	33,611,697	12,975,000	998,000	2,281,472
76	Mar 28, 2026 14:05	4,369	29,713,987	12,984,000	998,000	2,281,472
77	Mar 28, 2026 14:08	4,369	29,143,388	11,985,000	1,997,000	2,498,560
78	Mar 28, 2026 14:07	4,369	31,009,019	12,983,000	998,000	2,281,472
79	Mar 28, 2026 14:05	4,372	29,066,737	12,990,000	999,000	2,494,464
80	Mar 28, 2026 14:04	4,374	36,840,914	11,999,000	1,999,000	2,490,368
81	Mar 28, 2026 14:04	4,374	33,425,541	12,998,000	999,000	2,277,376
82	Mar 28, 2026 14:05	4,375	34,547,343	13,000,000	1,000,000	2,281,472
83	Mar 28, 2026 14:04	4,375	25,091,041	13,000,000	1,000,000	2,281,472
84	Mar 28, 2026 14:08	4,375	29,584,418	13,000,000	1,000,000	2,281,472
85	Mar 28, 2026 14:08	4,376	29,564,181	12,003,000	2,000,000	2,281,472
86	Mar 28, 2026 14:04	4,377	37,617,728	13,007,000	1,000,000	2,281,472
87	Mar 28, 2026 14:03	4,382	27,075,600	13,020,000	1,001,000	2,486,272
88	Mar 28, 2026 14:08	4,385	30,041,445	12,028,000	2,004,000	2,498,560
89	Mar 28, 2026 14:05	4,386	28,522,091	13,034,000	1,002,000	2,494,464
90	Mar 28, 2026 14:04	4,398	29,634,591	13,067,000	1,005,000	2,535,424

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