TopK

Find the sum of the 100 largest values in a stream of binary integers as fast as possible.

Input: 100 000 000 uint32 values in little-endian binary on STDIN (4 bytes each).

Output: The uint64 sum of the top 100 greatest values, printed as a decimal string.

Restrictions:60s512Mb 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 20, 2026 23:07

olliecrowScore: 102,281Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 20, 2026 23:05	101,035	64,123,884	34,352,000	3,031,000	2,342,912
2	Mar 20, 2026 23:06	101,214	54,982,668	36,437,000	1,012,000	2,342,912
3	Mar 20, 2026 23:07	101,289	61,900,801	35,452,000	2,025,000	2,342,912
4	Mar 20, 2026 23:01	101,332	58,429,211	35,467,000	2,026,000	2,416,640
5	Mar 20, 2026 23:02	101,332	61,631,711	36,480,000	1,013,000	2,342,912
6	Mar 20, 2026 23:04	101,357	64,925,693	35,475,000	2,027,000	2,342,912
7	Mar 20, 2026 23:01	101,581	75,033,480	35,554,000	2,031,000	2,408,448
8	Mar 20, 2026 23:07	101,643	66,962,641	35,576,000	2,032,000	2,342,912
9	Mar 20, 2026 23:06	101,711	62,590,367	35,599,000	2,034,000	2,342,912
10	Mar 20, 2026 23:09	101,778	66,970,516	36,641,000	1,017,000	2,416,640
11	Mar 20, 2026 23:03	101,881	69,334,457	35,659,000	2,037,000	2,412,544
12	Mar 20, 2026 23:09	102,211	65,896,187	36,823,000	995,000	2,342,912
13	Mar 20, 2026 23:03	102,241	70,045,130	36,834,000	995,000	2,412,544
14	Mar 20, 2026 23:01	102,251	63,913,301	35,842,000	1,991,000	2,412,544
15	Mar 20, 2026 23:01	102,257	60,143,202	35,844,000	1,991,000	2,342,912
16	Mar 20, 2026 23:02	102,265	64,921,016	35,847,000	1,991,000	2,342,912
17	Mar 20, 2026 23:07	102,281	71,562,674	35,853,000	1,991,000	2,342,912
18	Mar 20, 2026 23:02	102,284	67,427,624	36,850,000	995,000	2,506,752
19	Mar 20, 2026 23:07	102,292	63,789,769	35,856,000	1,992,000	2,326,528
20	Mar 20, 2026 23:03	102,335	64,191,090	34,875,000	2,989,000	2,412,544
21	Mar 20, 2026 23:01	102,400	63,700,799	34,897,000	2,991,000	2,326,528
22	Mar 20, 2026 23:05	102,497	65,760,579	35,928,000	1,996,000	2,342,912
23	Mar 20, 2026 23:04	102,603	66,251,619	34,966,000	2,997,000	2,519,040
24	Mar 20, 2026 23:05	102,695	66,135,676	34,998,000	2,999,000	2,404,352
25	Mar 20, 2026 23:04	102,722	65,689,798	36,007,000	2,000,000	2,342,912
26	Mar 20, 2026 23:03	102,784	66,221,916	35,028,000	3,002,000	2,416,640
27	Mar 20, 2026 23:03	102,805	71,044,824	35,035,000	3,003,000	2,412,544
28	Mar 20, 2026 23:07	102,830	60,142,842	35,044,000	3,003,000	2,412,544
29	Mar 20, 2026 23:09	103,327	59,520,830	36,219,000	2,012,000	2,342,912
30	Mar 20, 2026 23:03	103,338	64,410,268	36,223,000	2,012,000	2,334,720
31	Mar 20, 2026 23:07	103,359	61,820,205	35,224,000	3,019,000	2,408,448
32	Mar 20, 2026 23:06	104,132	70,750,990	35,488,000	3,041,000	2,404,352
33	Mar 20, 2026 23:01	108,378	66,835,207	36,090,000	4,010,000	2,412,544

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