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.

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olliecrowScore: 102,278Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 20, 2026 21:15	100,670	59,603,022	34,228,000	3,020,000	2,342,912
2	Mar 20, 2026 21:17	100,689	60,507,629	35,242,000	2,013,000	2,326,528
3	Mar 20, 2026 21:15	100,727	59,886,908	34,248,000	3,021,000	2,334,720
4	Mar 20, 2026 21:17	100,986	62,211,508	35,346,000	2,019,000	2,433,024
5	Mar 20, 2026 21:18	101,005	58,636,509	34,342,000	3,030,000	2,330,624
6	Mar 20, 2026 21:20	101,189	59,601,647	35,417,000	2,023,000	2,428,928
7	Mar 20, 2026 21:17	101,503	59,292,285	35,526,000	2,030,000	2,424,832
8	Mar 20, 2026 21:16	101,605	62,762,286	35,562,000	2,032,000	2,416,640
9	Mar 20, 2026 21:15	101,746	61,211,376	36,629,000	1,017,000	2,510,848
10	Mar 20, 2026 21:19	101,854	69,830,204	35,649,000	2,037,000	2,424,832
11	Mar 20, 2026 21:18	102,181	64,383,463	36,813,000	994,000	2,342,912
12	Mar 20, 2026 21:15	102,219	70,369,338	35,831,000	1,990,000	2,342,912
13	Mar 20, 2026 21:15	102,241	64,127,691	36,834,000	995,000	2,342,912
14	Mar 20, 2026 21:16	102,278	63,723,390	35,852,000	1,991,000	2,428,928
15	Mar 20, 2026 21:19	102,278	68,986,246	36,848,000	995,000	2,420,736
16	Mar 20, 2026 21:15	102,300	65,607,553	34,863,000	2,988,000	2,342,912
17	Mar 20, 2026 21:20	102,316	65,562,694	35,865,000	1,992,000	2,342,912
18	Mar 20, 2026 21:17	102,322	66,842,628	35,867,000	1,992,000	2,342,912
19	Mar 20, 2026 21:17	102,441	63,218,511	35,909,000	1,994,000	2,330,624
20	Mar 20, 2026 21:15	102,446	64,664,575	35,910,000	1,995,000	2,342,912
21	Mar 20, 2026 21:17	102,476	62,523,479	35,921,000	1,995,000	2,433,024
22	Mar 20, 2026 21:20	102,654	69,550,588	35,983,000	1,999,000	2,424,832
23	Mar 20, 2026 21:16	102,797	67,463,350	35,033,000	3,002,000	2,342,912
24	Mar 20, 2026 21:15	103,238	60,863,269	35,183,000	3,015,000	2,420,736
25	Mar 20, 2026 21:15	103,351	68,249,845	36,228,000	2,012,000	2,416,640
26	Mar 20, 2026 21:18	103,627	65,720,491	36,324,000	2,018,000	2,342,912
27	Mar 20, 2026 21:19	105,057	68,442,959	36,878,000	1,993,000	2,433,024

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